local exploit for Windows platform. MOV A, E 7B 1. …If we have an opcode cache installed,…we check that cache. Products 1 - 30 Opcode Sheet for 8085 Microprocessor With Description-Download as Text file. mov [byte_83DB7], al then it assembles, but as I understand assembly (and I am a HUGE beginner, other than on the C64 years ago), the [] changes the address into a kind of pointer, so it looks up the contents of the address, then uses that as the location of where to store AL. I produced an opcode map in 2006, in an attempt to rectify this problem: it provides. Adobe introduced additional opcodes to AVM2 in Flash Player 10 for Alchemy (C to AS3 conversion magic). The size of the I/O port being accessed is determined by the opcode for an 8-bit I/O port or by the operand-size attribute of the instruction for a 16- or 32-bit I/O port. mov eax, [fooptr] mov al, [eax] In Masm, either: mov myvar, al or: mov [myvar], al are acceptable - and generate exactly the same code. coder64 edition of X86 Opcode and Instruction Reference. An instruction is a statement that is executed at runtime. • Such a structure makes it easier for a compiler to produce good code. Assume that data is in BC register pair. For a larger number of combinations, typically a separate address specifier is needed for each operand. Get notifications on updates for this project. To put into effect; carry out: a government that executes the decisions of the ruling party. iTel Mobile Dialer Express is a mobile app for Android and other smartphones, offering a range of functionalities like VoIP Calls & SMSs, cross-OS Instant Messaging and much more from data enabled mobile phones (3G/4G or WiFi). For example opcode MOV - is for the move operation, ADD, SUB, DIV are some of the examples of the opcode. It contains the following sections: Conditional execution ARM memory access instructions ARM general data processing instructions ARM multiply instructions ARM saturating arit. Also discuss the ROM memory space for 8051 family members. Next the B operand will be evaluated using the direct ($) addressing mode. If a fault is triggered, the fault manager (158) saves (314) a state record on a fault stack (162), then interrupts (316) to a corresponding fault handler routine (160). MOV may not use CS as a destination. This instruction copies the contents of that memory location into the accumulator. In machine language it is a binary or hexadecimal value such as 'B6' loaded into the instruction register. MOV operando, endereço B CJNE: Compara o operando ao #data imediato, e incrementa o PC se não são iguais. Download Introduction to x64 Assembly [PDF 303KB] Introduction. The MOV instruction is the most important command in the 8086 because it moves data from one location to another. 00 C MOVEL *ZEROS I 12 0 0010. The following are all equivalent: MOV 1 ACC MOV,1 ACC MOV 1,ACC MOV,,,,1,,,,ACC MOV , ,1, , ACC NOP - No Operation - 1 cycle. Most opcodes include one or two of the following flags, almost always in. MOV CR8 is not architecturally defined as a serializing instruction. 1 Architecture. If the primary opcode is 01, the instruction is a call instruction and the remaining bits (bits 0-29) are a displacement for the program counter (we will discuss the call instruction at greater length in Lab 10 ). Fixed it! Using a legacy rtcc. /* opcode/i386. For example, there are several opcode values that represent an instruction mnemonic mov based the operand’s location and type. : 0F 20/r MOV r64, CR0–CR7 MR: Valid: N. AAA - Ascii Adjust for Addition. b) In the search box, type Windows update. The B number is 1, which references the second instruction (dat. Please enter a label on the same line as the opcode, separated by a colon, i. The instructions mov ax,moffs16, mov eax,moffs32, mov rax,moffs64 with opcode of A1 are presented as mov/movabs instructions, but their operands reported consist of only one — the moffset. ADD, SUB, SHR, AND, OR, ) Data transfer (e. An immediate operand is specified in the instruction itself instead of mem-ory. - 255 are implemented and 1 is undefined. The base is a 32-bit value that indicates the physical memory that this segment starts at. …Let's talk about how PHP works. What does it mean? The opcode can’t give me the exact meaning of the instruction. If you plan to write assembly language, you should read that. Cookies and similar technologies enable us to provide you with an optimized user experience and functionality of our website. Addressing Modes • When the 8088 executes an instruction, it performs the specified function on data • These data, called operands, - May be a part of the instruction - May reside in one of the internal registers of the microprocessor - May be stored at an address in memory • Register Addressing Mode - MOV AX, BX - MOV ES,AX. Instead of going to memory to find the value, the value is in the instruction after the opcode, where the address was in direct addressing. But anyways no of bits required for opcode of 2 address instruction = Opcode in 3 address + 1 address field. Lets take an example. You can look at the Intel Software Developer's Guide, Volume 2, in Appendix A, the "Opcode Map", or any of several online sources that explain the machine language. ACI Data CE 2 2. MOV works exactly the same as sub. (This one byte form is valuable because it can be used to replace the first byte of any instruction with a breakpoint, including other one byte instructions, without over-writing other code). And comments are the remarks given at the end of the. as implements all the standard ARM opcodes. So… MOV A,B 01 111 000 = 78 in hex format. mov eax, [fooptr] mov al, [eax] In Masm, either: mov myvar, al or: mov [myvar], al are acceptable - and generate exactly the same code. Over the last few months I've been using the Azure DevOps platform as a way of building the many C# post-exploitation tools coming out of the Red Teaming space:. The addressing mode generally modifies the opcode. CPU Instruction. The expected RAM usage is 1962 (uninitialized data + stack) bytes. Start studying Assembly Quiz 4. The complete encoding of this instruction is. 00 C *DTAARA DEFINE DA 12 0005. AMD64 Technology AMD64 Architecture Programmer’s Manual Volume 3: General-Purpose and System Instructions Publication No. Opcode Operand Description MOV Rd, Rs M, Rs Rd, M Copy from source to destination. The AMD 3DNow ISA extension uses the immediate field to provide additional opcode information. Start by creating a copy of the original MOV video and change the file extension to AVI. 3 to 8 line decoder using 8051 8088 microprocessor 8085 Manual 74LSOO intel 8085 manual 8085A intel 8282 intel d 8282. The FPU offers a lot of complex and powerful floating-point operations, like SIN, COS, ATAN, SQRT, etc. Example 1 : Code for MOV CH, BL This instruction transfers 8 bit content of BL into CH The 6 bit Opcode for this instruction is 1000102 D bit indicates whether the register specified by the REG field of byte 2 is a source or destination operand. Decode opcode information to an struct at corresponding decode stage of the pipeline and execute it with the information from the struct at execution stage. ARM6 and later. In these cases, it is possible to use full 64-bit address, what makes these instructions kind of privileged: 48 A1 00 00 00 00 00 00 00 80 MOV RAX, [8000000000000000]. Bring your NOOK or NOOK Color into any Barnes & Noble store to get exclusive articles from top authors, and great offers including cafe treats and unique deals. ASL ASR LSL LSR ROR RRX. 8 Bit Transfer Instructions; 8080 Mnemonic Z80 Mnemonic Machine Code Operation; MOV: A,A: LD: A,A: 7F: A <- A MOV: A,B: LD: A,B: 78: A <- B MOV: A,C: LD: A,C: 79: A. Since mov takes an argument, the next 4 bytes are the constant to move into eax. Must be a reference to an instruction operand. Alchemy opcodes work on a ByteArray and provide fast access to it as 'memory'. This time, XED doesn't seem to consider segment register loads and stores to be special and lumps them into plain old MOV, but I consider them distinct, and the machine considers them distinct enough to give them a special opcode byte in the encoding that's not used for anything else, so let's call those distinct. The opcode type-3: instruction of STA, LDA. The period during which an application is stored in memory and prior to execution is the most common time for malicious code to be injected into that memory. 1 = An illegal opcode detection, an illegal address mode or uninitialized W register used as an Address. we have to fetch the operation code,for this the microprocessor goes to the memory location where it will find the machine code for that opcode. All Easy Rider bus routes are still active, but ridership has been limited to five passengers per bus at a time, according to Michael Kesterson, MOV Transit general manager. static int: lookupFltBranch(int size, int which) static int. This emulator is totally useless, but it was created for the CTF NDH 2012. Take a deep breath - this is one of the most flexible, and complicated, of the ARM instructions. Buffer overflow vulnerability and exploit tutorial and how-to build the shell code for payloads on Intel x86 microprocessor and Linux machine. MOV -- Move Data Opcode Instruction Clocks Description 88 /r MOV r/m8,r8 2/2 Move byte register to r/m byte 89 /r MOV r/m16,r16 2/2 Move word register to r/m word 89. ACI Data CE 2 2. However, Windows Media Player can open only early versions of the file extension. BIND_OPCODE_MASK (0xF0) in. To put into effect; carry out: a government that executes the decisions of the ruling party. MOV operando, endereço B CJNE: Compara o operando ao #data imediato, e incrementa o PC se não são iguais. List of All Instruction Types. The opcode type-1: instruction of JGE, JMP. Adobe introduced additional opcodes to AVM2 in Flash Player 10 for Alchemy (C to AS3 conversion magic). Example: MOV R8, #1 2/13/2017 NUST - School of Electrical Engineering and Computer Science 8 opcode operands MOV Rn, direct MOV @Rn, Rm ADD Rn, Rm 0000 Rn direct 0010 Rn 0100 Rm Rn SUB Rn, Rm 0101 Rm MOV Rn, #immed. The REX prefix is also used for mov instructions with 64-bit immediate operands; the default operand size, even in 64-bit mode, The remainder of the instruction format is the same. As a result, the 8051 Microcontroller instruction set can have up to 2 8 = 256 Instructions. The first example is the operation performed as if CMOV didn't exist. An opcode is a single instruction in assembly language. Em informática, um código de operação (ou Opcode) é a referência à instrução que um determinado processador possui para conseguir realizar determinadas tarefas. AX (register) is an operand. 4 bit source - specify the source. According to one-byte opcode map, C6 opcode is defined as a “Grp 11 (1A) – MOV”. It contains the following sections: Conditional execution ARM memory access instructions ARM general data processing instructions ARM multiply instructions ARM saturating arit. Opcode Operand Description MOV Rd, Rs M, Rs Rd, M Copy from source to destination. Exe(inbox),Td. At the machine code level, I/O instructions are shorter when accessing 8-bit I/O ports. Computed goto for efficient dispatch tables July 12, 2012 at 15:44 Tags Assembly , C & C++ Recently, while idly browsing through the source code of Python, I came upon an interesting comment in the bytecode VM implementation ( Python/ceval. You can also cheat by first compiling the code then read the bytes from the compiled executable and convert them to binary. The first byte is the opcode and the second byte is the relative address of the target location. So for any instruction LDA,MVI,MOV etc. //On MIPS, operands for mov instr //can only be registers! mov a0, a1 //Copy a1 register val to a0 //In fact, mov is a pseudoinstruction //that isn’t in the ISA! Assembler //translates the above to: addi a0, a1, 0 //a0 = a1 + 0 RAM is cheap, and RISC makes it easier to design fast CPUs, so who cares if compilers have to work a little harder. To find a good mask to detect branch instructions, we had a look at the opcode tables in the GNU Binutils source code. The B number is 1, which references the second instruction (dat. "Your website says Camtasia Studio should be able to import/edit. This is later translated by the assembler to generate the object code. With 8-bit binary opcode, a total of 256 different operation codes can be generated, each representing a certain operation. This document contains general information about the Intel 80x86 family architecture and complete (I hope) instruction set of this processors up to 80486. For example, the mnemonic MOV is used in assembly language for copying and moving data between registers and memory locations. Each instruction of 8085 has 1 byte opcode. In other words, there is a unique register number (CX=1) added to the base opcode value 'B8' to give 'B9', which you see in the dump. Quiz by TomoAlien 6502 Opcodes Quiz - By TomoAlien. mov #0x280, sp Use Table 1. • All opcodes should permit all addressing modes, where that makes sense. D stands for direction If D=0, then the direction is from the register If D=1, then the direction is to the register W stands for word If W=0, then only a byte is being transferred, i. This instruction moves the hexadecimal number 280 (0x280) to register sp which is a second register in the cpu memory map (Fig. All these instructions are excuted component wise. To load the CS register, use the far JMP, CALL, or RET instruction. Suas especificações e formatos são definidos no conjunto de instruções da arquitetura do processador em questão (que pode ser um processador geral ou uma unidade de tratamento mais especializado). The MOV opcode moves its source to the destination. The logical operations (AND, EOR, TST, TEQ, ORR, MOV, BIC, MVN) perform the logical action on all corresponding bits of the operand or operands to produce. Operands are trhe input variables. opcode The opcode is the machinecode representation of the instruction mnemonic. The Opcode stands for Operation Code. These opcodes are used to perform different types of task such as addition, subtraction, multiplication of signed or unsigned numbers. x86 Opcode Confusion •There are different opcodes for A B and B A • If Opcode = 0F, then use next byte as opcode • If Opcode = D8-DF, then FP instruction 10001011 11 000 011 MOV EAX, EBX 10001001 11 000 011 MOV EBX, EAX 10001001 11 011 000 MOV EAX, EBX 11011000 11 R/M FP opcode. Some times you'll find some opcode that uses the FPU registry. Computed goto for efficient dispatch tables July 12, 2012 at 15:44 Tags Assembly , C & C++ Recently, while idly browsing through the source code of Python, I came upon an interesting comment in the bytecode VM implementation ( Python/ceval. In case of a 64bit processor you need even more instructions since you have to shift the bits here too. the degree of independence between opcodes and modes For small number of addressing modes or opcode/addressing mode combinations, the addressing mode can be encoded in opcode. The opcode type-2: instruction of AND, OR, NOT, XOR, ADD, SUB, MUL, MOV, CMP. The MOV instruction cannot be used to load the CS register. Example: MOV A, M: Move contents from address pointed by M to Acc. MOV r1,r2: 7F:. Chapter 2 —Instructions: Language of the Computer —17 Sign Extension n Representing a number using more bits n Preserve the numeric value n Replicate the sign bit to the left n c. Basic mov immediate instruction. The commands are a direct one-to-one (mostly) mapping from the command to the op-code (or binary) just as I showed earlier. 00 C EVAL C=%CHAR(I) 0013. A null selector. Applicable, e. For more information, see Chapter 8 in Intel® 64 and IA-32 Architectures Software Developer's Manual, Volume 3A. unsigned values: extend with 0s n Examples: 8-bit to 16-bit n +2: 0000 0010 => 0000 00000000 0010 n -2: 1111 1110 => 1111 11111111 1110 n In LEGv8 instruction set n LDURSB: sign-extend loaded byte. As Marie states, it is unpredictable. Being Engineer 18,901 views. 00,01,10) 2 addresses = 5 bits * 2 = 10 bits total = 2 + 5*2 = 12 (yes) 30 one-address instructions:. MOV: - This instruction is used to copy the data from one place to another. The contents of the source register are not altered. Write a program to add two 16-bit numbers. The MOD field specifies x86 addressing mode:. The opcode tells the CPU what to do. MOV: - This instruction is used to copy the data from one place to another. [R] = Reserved Yellow boxes contain some two-word instructions. In assembly language mnemonic form an opcode is a command such as MOV or ADD or JMP. An operand is the data it does something with. I rewrote the file intel. I am required to encode each of the following and I am unsure of how to start. struct aarch64_opcode aarch64_opcode_table[] = { /* Unconditional branch (register). One encoding, OP = 0x00, is the J- mov rC, rA add rC, rA, r0 movhi rB, IMMED orhi rB, r0, IMMED. (The result of the shift is the. This document is a quick outline of the unusual form of assembly language used by the gc Go compiler. What is the opcode for the MOV command? I am required to encode each of the following and I am unsure of how to start. I know I need the opcode for MOV but that is about all I know. Illegal opcode found on address 0x0 (msp430) where it appearently finds an illegal opcode. The x86 instruction set refers to the set of instructions that x86-compatible microprocessors support. The opcode for an instruction MOV A, address of operation is E5H. class opcodes. If it is a memory address, the address is computed from a segment register and any of the following values: a base register, an index register, a scaling factor, a displacement. Only on NOOK. For example the mov instruction for register to register movement has opcode 0x89 while moving immediate data into a register has opcode 0xC7. the only operand in a single-operand instruction like NOT or NEG. In 8085 Instruction set, MOV is a mnemonic, which stands for "MOVe". An exception are forms of MOV instructions, whose one operand is the accumulator (rAX register) and other is immediate memory offset (opcodes A0, A1, A2, and A3). MOV operando, endereço B CJNE: Compara o operando ao #data imediato, e incrementa o PC se não são iguais. Whenever the instruction at 0202 is run (E5H), the accumulator will become active and ready to receive data. These are the top rated real world C++ (Cpp) examples of MATH extracted from open source projects. Opcode and Operands. Following the specification after the header start an extended binary opcode (because there is the { ) LLLL is the length, little indian so it's 0xA2=162 bytes CC is the opcode, but i can't find it in the opcode list 😞 Why? Thanks!. Opcode Sheet For 8085 Microprocessor With Description And Comments Opcode sheet for 8085 Microprocessor with description. This feature is not available right now. It can also go the other way, taking a hexadecimal string of machine code and transforming it into a human-readable representation of the instructions. So… MOV A,B 01 111 000 = 78 in hex format. MOVZX8 EBX,CH or: int b = anInt & 0xff; MOV EBX,ECX AND EBX,#255 vs. ECS 50 8086 Instruction Set Opcodes. This instruction copies the contents of that memory location into the accumulator. All the opcodes in TGSI have one dst vector and from 0 to 3 source vectors. An instruction is a statement that is executed at runtime. 1 = An illegal opcode detection, an illegal address mode or uninitialized W register used as an Address. Operation temp := DEST DEST := SRC SRC := temp Description XCHG exchanges two operands. By performing statistical analysis on the datasets, a significant difference between the opcodes in malware and benign files was found. 00 C EVAL I=%INT(C) 0011. For example opcode MOV - is for the move operation, ADD, SUB, DIV are some of the examples of the opcode. This is the only instruction that allows the source and destination to be different sizes. Hi all, I am using Lazarus 1. Mov Ra, #C 0011 Opcode (4 bits) Destination Register (4 bits) Constant (8 bits) RF[a] c Sub Ra,Rb,Rc 0100 Opcode (4 bits) Destination Register (4 bits) Source Register (4 bits) Source Register (4 bits) RF[a] RF[b] - RF[c] Jumpz Ra, X 0101 Opcode (4 bits) Source Register (4 bits) Offset (8 bits) If RF[a] == 0, PC PC+offset. I found this. Emulation64. However, the number of unique N-gram opcodes exponential increase as N increases. Der Gerätename kann einem Opcode folgen und beschreibt das Ziel des Opcodes. e: JNZ (SKIP). MOV copies the second operand to the first operand. Is MOV DS all one byte, or is MOV one byte, DS the second, and the AX the third? Is the table implying that the binary value of the source register prefix DS is 011?. You can rate examples to help us improve the quality of examples. net site has a very useful quick reference. The opcode is like a verb in a sentence, and the operands are like the subject in a sentence. The Decimal flag controls how the 6502 adds and subtracts. Only MOV instruction has forms that use direct data offset. 4102 94 03 SUBB A,#Data2 Subtract data2 and A reg content 4104 90 45 00 MOV DPTR,#4500 Move the data in address to data pointer 4107 F0 MOVX @ DPTR,A Move A reg to data pointer 4108 80 FE HERE SJMP HERE Jump on HERE d) Output: ASCII Array INPUT. Following the specification after the header start an extended binary opcode (because there is the { ) LLLL is the length, little indian so it's 0xA2=162 bytes CC is the opcode, but i can't find it in the opcode list 😞 Why? Thanks!. The B number is 1, which references the second instruction (dat. ASL ASR LSL LSR ROR RRX. The d bit in the opcode determines which operand is the source, and which is the destination:. transferred to accumulator) is located. As you may or may not already know, the x86 instruction set has a variable length instruction size (that is, an instruction can have a length between one byte and 16 bytes, at max. Instruction Opcode/Function Syntax Operation trap : 011010: o i: Dependent on OS; different values for immed26 specify different operations. c) Select Windows update, and see if there is any update for device. Addresses are the locations in memory of specified data. ADDRESSING MODES OF 8085 Implied addressing: These doesnt require any operand. as implements all the standard AVR opcodes. CPU Instruction. ADC D 8A 1 6. Data manipulation (e. SECTION IV - 8051 PROGRAM COUNTER AND ROM SPACELet's examine the role of the program counter [PC] register in executing an 8051 program. s(37): error: A1163E: Unknown opcode main, , expecting opcode or Macro main. The syntax of the mov. The collection of instructions is implemented as bit patterns, each one of which has a different meaning when loaded into the instruction register. · When moving Date, Time or Timestamp data, factor 1 must be blank unless either the source or the target is a character or numeric field. LSR #5 = divide by 32 Arithmetic Shift Right •Shifts right (divides by powers of two) and preserves the sign bit, for 2's complement operations. The numbers are 3CE7H and 3B8DH. TEST XCHG MOV REG BOUND ARPL INS OUTS CS SEGMENT OVERRIDE DS LEA POP MOV Opcode table presentation inspired by work of Ange Albertini MMX, SSE{2,3} MMX, SSE2 MMX, SSE{1,2} MMX, SSE{1,2,3} 1 st 2nd 1 2nd. If MOD equals 00 and R/M equals 101 only 32-bit displacement value will be used (e. Given this change: - An extra bit will be needed to specify the opcode. Register Designation. List of All Instruction Types. Addressing Modes • When the 8088 executes an instruction, it performs the specified function on data • These data, called operands, - May be a part of the instruction - May reside in one of the internal registers of the microprocessor - May be stored at an address in memory • Register Addressing Mode - MOV AX, BX - MOV ES,AX. Example of instruction codes. Depending on the opcode escape sequence, a different opcode map is selected. f 00 0000 0 0 NUL 64 40 @. BIND_OPCODE_MASK (0xF0) in. If you plan to write assembly language, you should read that. Over the last few months I've been using the Azure DevOps platform as a way of building the many C# post-exploitation tools coming out of the Red Teaming space:. c ) about using the computed gotos extension of GCC [1]. Mnemonics, Operand Opcode Bytes 1. Opcode NoChange:. , q for quadword (64 bits), d for doubleword (32 bits), w for word (16 bits), or b for byte (8 bits). It can also go the other way, taking a hexadecimal string of machine code and transforming it into a human-readable representation of the instructions. We've realised that, besides that initial introduction, we've never shown any real life use case, nor did we ever demonstrate the incredible power and flexibility of the ClamAV bytecode engine. Even the incredibly simple microprocessor shown in the previous example will have a fairly large set of instructions that it can perform. 19—September 2012 Trademarks AMD, the AMD Arrow logo, AMD Athlon, and AMD Opteron, and combinations thereof, and 3DNow! are trademarks,. Note that in 8085 instructions, as the first operand specifies the destination, and the second one the source, so here also r1 is destination register and r2 is the source register. Multimedia tools downloads - SpiceFX for Movie Maker by Pixelan Software and many more programs are available for instant and free download. But wait, there are six other mnemonics with the same primary opcode. Pseudo Opcodes Pseudo opcodes are a convenience method of repeatedly using opcodes that don't take an operand. The opcode field is 6 bits long (bit 26 to bit 31). crc32 calculation using crc32 opcode. The following table lists the 8051 instructions sorted by the opcode. with opcode=SPECIAL and function=MOVC, changing the value to MOVCI. ) nothing to dramatic. You can see that for each row, they are all different but they are implementing the same function, a jump to another location. MOV works exactly the same as sub. Attempting to do so results in an invalid opcode exception (#UD). Humans are not particularly good at remembering bit patterns. The syntax of the mov. Expanding Opcodes We will now examine tradeoffs involving both opcodes and addresses. Applicable, e. Instructions that Affect Flag Settings(1) Instruction Flag Instruction Flag COV. The number of bits dedicated to the opcode will need to increase from 4 to 5. Home » Opcodes. For example: mov eax, [addr] has it's own opcode (i would guess for speed since this is a common operation). The direct address of Port 1 (9014) is determined by the assembler and inserted as byte 2 of the instruction. Exe(inbox),Td. 00 C EVAL I=%INT(C) 0011. I’ll take you step by step through how I fixed these opcodes to successfully recover the source code. Instructions, Operands, and Addressing. As the 8051 family of Microcontrollers are 8-bit processors, the 8051 Microcontroller Instruction Set is optimized for 8-bit control applications. - [Instructor] Opcode caches,…what is it and why should you use it?…Opcode cache caches the conversion of your PHP script…into operation code or opcode for later usage. However, Windows Media Player can open only early versions of the file extension. 00 C *LOCK IN DA 0008. The task of the MOV16 opcode is to move the content of a 16-bit wide register into another one. The ModR/M byte may refer only to memory. By supplying a long string of data to the 'Rename' (0x02), 'Delete' (0x03), or 'Add' (0x04) command, a buffer overflow condition occurs in IGSSdataServer. I pretty much realized that I need to treat MOV as a specific case, since the difference is that it can be grouped by the 1st or 2nd argument which makes it so there are conflicts. disp-low 76 s 43210 data DATA TRANSFER MOV Move: Register/ memory to/from register Immediate to register/ memory Immediate to register Memory to accumulator Accumulator to memory. Number of reserved opcodes: 1682 (2. ARM6 and later. Opcode AddrMode Disp8 •Examples ADD AX,[BX+1000h] MOV DX,[BX+DI+130] Addressing Mode 11 •Specifies that R/M bits refer to REG table •All two operand register -to register instructions use addressing mode 11 MOV AX,BX MOV DX,CX MOV AH,BL •Addressing Mode 11 is also used by immediate mode instructions where dest is a register ADD BX,1 ADC. Instruction type/opcode: Instruction meaning: Data transfers: Move data between registers and memory, or between the integer and FP or special register; only memory address mode is 16-bit displacement + contents of a GPR. : int g = (anInt >> 8) & 0xff; MOV EBX,ECX SHR EBX,#8 AND EBX,#255 vs. Chapter 2 —Instructions: Language of the Computer —17 Sign Extension n Representing a number using more bits n Preserve the numeric value n Replicate the sign bit to the left n c. Write a program to sum all numbers. , 00 20: higher bit of address where opcode is stored, i. texture declarations, constant buffer declarations, etc. · If factor 2 is longer than the result field, the excess leftmost. ASL ASR LSL LSR ROR RRX. Suas especificações e formatos são definidos no conjunto de instruções da arquitetura do processador em questão (que pode ser um processador geral ou uma unidade de tratamento mais especializado). The mov and push codes were the most common opcodes in all cases, but variations in the frequencies of appearance could be seen. B} Wb, #lit5, Wd • Over 60 different operators (i. It corresponds to the first byte (or so!) that tells the CPU what to do, in this case mov e a value from one place to another. …If the cache is not installed,…we have to both parse our code, compile it into. Explanation… MOV A,B have two bit opcode for MOV instruction which is 01 ,opcode of register A(destination)is 111 and opcode of register B(source) is 000. Get notifications on updates for this project. The command lines with LDI and MOV produce code: 000000 E906 000001 2F01. I've had problems getting this opcode to work for that reason. - It provides a variety of fast, compact address modes for accessing the internal RAM to facilitate operations on small data structures. – the opcode is 100010, a MOV instruction – D and W bits are a logic 1, so a word moves into the destination register specified in the REG field – REG field contains 101, indicating register BP, so the MOV instruction moves data into register BP 15. Intel 80x86 Assembly Language OpCodes. If the carry bit is set or if the value of bits 0-3 exceed 9, 0x06 is added to the accumulator. The two letters in the first column are the opcode. If the Gr bit is 1, then the actual limit is the limit value * 4096. The relative address range of 00 - FFH is divided into forward and backward jumps. ; base index C60418 05 mov byte[eax + ebx*1],5 C60403 05 mov byte[ebx + eax*1],5 Two distinct opcode extensions for SAL/SHL. Fixes the SET opcode bug where it does not handle 4 byte longs correctly. Key features of Mac MOV Video Converter: Convert AVI, MKV, MP4, MTS, MXF, FLV, WMV, XAVC, MPEG etc to MOV formats. While on x86 most instructions are allowed to directly operate on data in memory, on ARM data must be moved from memory into registers before being operated on. The FreeRTOS support forum can be used for active support both from Amazon Web Services and the community. In the 2nd T-state T2, the ALE signal goes low thus demultiplexing the lower order address pins for the data 78H which is the opcode for the instruction. The default modifier for the mov opcode is. The instruction has no ModR/M byte; the offset of the operand is encoded as a WORD in the instruction. Start studying Assembly Quiz 4. 6 bit op code - specify operation code such as add,mov ,subtract. ``Ev,Gv'' describes a similar instruction that operates on 16 or 32 bits, depending on the presence or absence of a prefix. MOV) but differ in their operation code, depending on the type of the operands that are involved. It contains the following sections: Conditional execution ARM memory access instructions ARM general data processing instructions ARM multiply instructions ARM saturating arit. It is Damn Boring to check word by word and convert it into Opcode. To load the CS register, use the far JMP, CALL, or RET instruction. An instruction is a statement that is executed at runtime. the only operand in a single-operand instruction like NOT or NEG. x86 Instructions. The following table lists the 8051 instructions sorted by the opcode. Consider an (n + k) bit instruction with a k-bit opcode and a single n-bit address. "Your website says Camtasia Studio should be able to import/edit. The opcode length may be either 1 byte or 2 byte maximum. Start Address: Show warnings: Highlight warnings: Highlight errors: Notes: Please enter a label on the same line as the opcode, separated by a colon, i. Data and SFRs may be manipulated using byte opcodes. The B number is 1, which references the second instruction (dat. What I found was that all of the operation codes (opcodes) had been shuffled around. If it is a memory address, the address is computed from a segment register and any of the following values: a base register, an index register, a displacement. ---> Operand is a quality on which operation is performed. 3 to 8 line decoder using 8051 8088 microprocessor 8085 Manual 74LSOO intel 8085 manual 8085A intel 8282 intel d 8282. Being Engineer 18,901 views. register contents, memory contents, or a constant value) into the location referred to by its first operand (i. Notations and Format used in this Document. A total of 67 malware executables were sampled statically disassembled and their statistical opcode frequency distribution compared with the aggregate statistics of 20 non-malicious samples. The R/M field, combined with MOD, specifies either. · Here if we want the dataarea to be in locked mode even after doing the update by OUT operation, we can use *LOCK in factor-1. The two letters in the first column are the opcode. Other opcodes can have immediate values following them. Example: RAL: Rotate left with carry. …Let's talk about how PHP works. chromium / native_client / nacl-binutils / master-backup /. Now another important topics we should know to clear the concept on timing diagram of 8085 microprocessor. The byte specified by the second operand is copied to the location specified by the first operand. The R/M field, combined with MOD, specifies either. 5 bit destination -specify the destination. Assembly language opcodes and operands are encoded into machine language according to nine fundamental formats. POSITIVE: MOV ACC , RIGHT Write the value in the ACC register to the RIGHT port. This instruction copies the contents of that memory location into the accumulator. By supplying a long string of data to the 'Rename' (0x02), 'Delete' (0x03), or 'Add' (0x04) command, a buffer overflow condition occurs in IGSSdataServer. The contents of r1 will then be incremented to 101. Depending on the opcode escape sequence, a different opcode map is selected. Cheat Engine The Official Site of Cheat Engine FAQ Search Memberlist Usergroups Register : Profile. Opcodes represent both declarations (i. The jumps and calls discussed in this chapter are decision codes that alter the flow of the program by examining the results of the action codes and changing the contents of the. Multimedia tools downloads - SpiceFX for Movie Maker by Pixelan Software and many more programs are available for instant and free download. Once IR is ready, swiftshader will consume those IR and generate LLVM IR, some fixed pipeline and graphic state will also be programmed into LLVM IR at the same time. the second operand in a two-operand instruction, or. For example, in the sample program, the opcode MOV. MOV is the opcode. When reading the table, the opcode at 0x0810D1B8 increments a register by the length of one table row (0x10 bytes). Prefix code(s) i. (6 points) MOV R1, #0 MOV R7, #8 MOV A, #97H Again: RLC A JNC Next INC R1 Next: DJNZ R7, Again. timing diagram in 8085 | opcode fetch machine cycle 8085 | 8085 lecture in hindi - Duration: 18:55. Apple QuickTime Movie. Download Introduction to x64 Assembly [PDF 303KB] Introduction. The timing diagram of MOV instruction is shown below: In Opcode fetch ( t1-t4 T states ): 00 – lower bit of address where opcode is stored, i. 4 Clock cycles, Length of Instruction 5-8 5. The MOV instruction is the most important command in the 8086 because it moves data from one location to another. · Here if we want the dataarea to be in locked mode even after doing the update by OUT operation, we can use *LOCK in factor-1. In translating our pseudocode to assembly language, we'll find the shift operations useful both for multipling n by 3 (computed as n + (n « 1)) and for dividing n by 2 (computed as n » 1). • value – value of the offset. If you keep a line break between them, the operation after the label will be assumed NOP, and will not raise an error; Please enter label names in jump/call statements with parentheses, i. Each opcode is a single byte. ---> Operand is a quality on which operation is performed. ---> Opcode is the portion of a machine language instruction that specifies the operation to be performed. Most values of OP are encodings for I-type instructions. x86 Instructions. The classifier used is. Define an instruction called MOV (Transfer instruction) If an opcode called MOV is defined, which moves its source to its destination, then any operation may be performed. fmt Instruction Change the name of the constant value in the function field from: MOVC to: MOVCF There is a corresponding change in the FPU opcode encoding table in section B. Explanation… MOV A,B have two bit opcode for MOV instruction which is 01 ,opcode of register A(destination)is 111 and opcode of register B(source) is 000. In case of a 64bit processor you need even more instructions since you have to shift the bits here too. - 그런데 문제는 다음 줄에 있는 “mov eax, [si. Opcode AddrMode Disp8 •Examples ADD AX,[BX+1000h] MOV DX,[BX+DI+130] Addressing Mode 11 •Specifies that R/M bits refer to REG table •All two operand register -to register instructions use addressing mode 11 MOV AX,BX MOV DX,CX MOV AH,BL •Addressing Mode 11 is also used by immediate mode instructions where dest is a register ADD BX,1 ADC. Run VLC player, go to ‘ Tools ’ tab and select ‘ Preferences ’, In the Preferences window on the top ribbon select ‘ Input/Codecs ’ In the ‘ Files ’ select ‘ Always Fix ’. Even the incredibly simple microprocessor shown in the previous example will have a fairly large set of instructions that it can perform. Only MOV instruction has forms that use direct data offset. Start by creating a copy of the original MOV video and change the file extension to AVI. Low disp/addr/data (optional) 5. 00 C MOVEL DA C 12 0009. The GNU ARM assembler prefers to use the at-sign for comments. net site has a very useful quick reference. load data with A register. The opcode is saved in program memory at 0202 address. Each opcode is a single byte. Unlike MOV there is no restriction on value. An exception are forms of MOV instructions, whose one operand is the accumulator (rAX register) and other is immediate memory offset (opcodes A0, A1, A2, and A3). If it is a memory address, the address is computed from a segment register and any of the following values: a base register, an index register, a scaling factor, a displacement. In this instruction 8-bit data value in register r2 will be moved to the 8-bit register r1. c file with #ifdef __PIC32MX that failed and used the #else which activated assembler code. The instructions can be divided into 5 categories: arithmetic instructions. 5 bit destination -specify the destination. While on x86 most instructions are allowed to directly operate on data in memory, on ARM data must be moved from memory into registers before being operated on. The contents of r1 will then be incremented to 101. Key features: Batch-convert unlimited video files in the fast and easy setup interface; Extract video files into custom file sizes for use with portable MP3 players; You can customize the size of output file and its Bitrate will be calculated automatically; Multithreading are supported and the more. Summary − So this instruction MOV E, Hrequires 1-Byte, 1-Machine Cycles (Opcode Fetch) and 4 T-States for execution as shown in the timing diagram. Each instruction is identified by an opcode (operation code), a mnemonic and the type of its parameters. ADC A 8F 1 3. _asm {cmp [VBDebugger. For example, the mnemonic MOV is used in assembly language for copying and moving data between registers and memory locations. Page A-5 of the ISR tells us that this is a MOV Ew, Sw instruction. ---> Opcode is the portion of a machine language instruction that specifies the operation to be performed. There are even slight differences from one model of PIC to another. ex·e·cut·ed , ex·e·cut·ing , ex·e·cutes 1. Opcodes are used in machine code for a number of functions, including Float Addition of registers, Two's compliment addition of registers, Shifting register values to memory, or to a hard drive. For example, an x86 MOV instruction requires a two-byte opcode. By supplying a long string of data to the 'Rename' (0x02), 'Delete' (0x03), or 'Add' (0x04) command, a buffer overflow condition occurs in IGSSdataServer. Decode opcode information to an struct at corresponding decode stage of the pipeline and execute it with the information from the struct at execution stage. You can see that each line consists of two parts: First is the opcode such as MOV that is an abbreviation indicating the type of operation; and after it comes arguments such as “R0, #0”. AX (register) is an operand. Use Int 21h function 42h, Move File Pointer, to move the file pointer to the position where you want the file to be truncated. An opcode is short for 'Operation Code'. This map was constructed by taking a map for a more recent x86 processor and removing information irrelevant to the (much earlier) 8086. Operands are typically memory or registry addresses. blob: fa7932fddaac05c10293e23d0d0bd4a8ebc1f54d [] [] []. • 32 bit and 8 bit data types - and also 16 bit data types on ARM Architecture v4. Assume that data is in BC register pair. s(39): error: A1163E: Unknown opcode main , expecting opcode or Macro main. 8051 instruction set-opcode,operand,size in bytes,M-cycle. , distinct opcode mnemonics) Address Mode Encoding in PIC24 Instruction Set. LDAX (Load accumulator indirect): - The contents of the designated register pair point to a memory location. The classifier used is. If R/M equals 100 the SIB operand is present and register is defined in SIB operand in Base field. The opcode suffixes are tacked on to this base name, the from suffix before the to suffix. 1E6E:0BE4 sub sp,000A Make room for 10 bytes on the stack mov bx,sp fwait fstpt ss:[bx] Store the floating point value to stack as an 80-bit (10-byte) value nop fwait add sp,0002 pop cx pop bx pop dx pop ax mov di,ax and ax,7FFF AX = exponent part of the stored floating point value sub ax,3F7E jbe 0C1A or ah,ah jne 0C25 Jump taken if need to. Here one machine cycle consists of 12 oscillator periods. Upon compilation or startup of an operating system or process, the process or program in native code is translated into the randomized instruction set. Opcode length specifications are currently supported for the 65c816 and SPC700 architectures. You can check it with your favorite disassembler, e. What is meant by byte-swapping? 6. Due to the regular encoding of the MOV instruction using nearly a quarter of the entire opcode space there are redundant codes to copy a register into itself MOV B,Bfor instancewhich are of little use, except for delays. 0x0F 0x21 or 0x0F 0x23 SKINIT: Secure Init and Jump with Attestation. Key features of Mac MOV Video Converter: Convert AVI, MKV, MP4, MTS, MXF, FLV, WMV, XAVC, MPEG etc to MOV formats. MOV: Verschiebt die Festplatte um 2 cm nach links; DIV: Dividiert den ersten Operanden durch 0; Als Gegensatz zu den Opcodes müssen noch die Gerätenamen genannt werden. MOV - Move - 1. Instruction Opcode/Function Syntax Operation trap : 011010: o i: Dependent on OS; different values for immed26 specify different operations. In this instruction 8-bit data value in register r2 will be moved to the 8-bit register r1. Microprocessor takes only one machine cycle (op-code fetch) to complete instruction. All rights reserved. Several related instructions can have the same opcode. These opcodes are used to perform different types of task such as addition, subtraction, multiplication of signed or unsigned numbers. MOV, XCHG, ) Branching and conditionals (e. Chapter 2 —Instructions: Language of the Computer —17 Sign Extension n Representing a number using more bits n Preserve the numeric value n Replicate the sign bit to the left n c. Otherwise it generates a near jump (one-byte opcode followed by a two-byte displacement). MOV A, D 7A 1 102. The 6502 will set this flag automatically in response to an interrupt and restore it to its prior status on completion of the interrupt service routine. However, Intel noticed that two instructions mov memory, eax ; store register in a variable mov eax, memory ; load register from a variable occur very frequently. AMD64 Technology AMD64 Architecture Programmer’s Manual Volume 3: General-Purpose and System Instructions Publication No. For the MOV instruction: You can append a suffix indicating the amount of data to be moved -- e. Operands are trhe input variables. OPCODE/ FUNCT (Hex) O / hex 9hex O / Chex hex hex 24hex 25 hex hex O / hex O / mov. For near branches, it affects decode too since > immediate offset's width is different. Executable files were parsed into instructions using MISTFALL 1. MOV is the opcode. Modo imediato (opcode 0xB4) não é usado, pois serve somente de origem. Opcode: 6 bits Source register: 5 bits Destination register: 5 bits Immediate value: 16 bits. Low data (optional) 7. 3 Basic Y86 Instruction Encoding To determine a particular instruction's opcode, you need only select the appropriate bits for the iii, rr, and mmm fields. The opcode is like a verb in a sentence, and the operands are like the subject in a sentence. architectural register, flag, etc. I'm trying to move a string into a blank string but I can't figure out how to do it. You can see the full list of Shader Model 5 assembly instructions here. Intel Assembler 80186 and higher CodeTable 1/2 31 24 23 16 15 8 7 0 MOV BX,Offset[S] ; addr of "H" of "Hello !" MOV AX,[VarW] ; get value into accumulator. The operand is either a general-purpose register or a memory address. ARM Instruction Reference This chapter describes the ARM instructions that are supported by the ARM assembler. The branch if zero (opcode C) and branch if positive (opcode D) enable us to directly change the program counter, thereby altering the flow of control of our programs. You can rate examples to help us improve the quality of examples. as implements all the standard AVR opcodes. The most significant four bits identify the opcode. 97 Version 1. These instructions are treated exactly like the corresponding 16-bit equivalent (so that, for example, MOV DS,EAX functions identically to MOV DS,AX but saves a prefix when in 32-bit mode), except that when a segment register is moved into a 32-bit destination, the top two bytes of the result are undefined. first exmaple ADD A, R3 Opcode = 00101rrr = 00101011B=2BH (1-byte instruction) I foudn the same result ut I looked up a table. The R/M field, combined with MOD, specifies either. Table-1: List of All 8085 Instructions with their Opcodes, operands, instruction Size, Number of Machine Cycles, Number of T-states. See Also: MOVC, MOVX MOV @Rn, #immediate C AC F0 RS1 RS0 OV P Bytes 2 Cycles 1 Encoding 0111011n immediate Operation MOV (Rn) = immediate Example MOV @R0, #0 MOV @Ri, A C AC F0 RS1 RS0. MOV CR* instructions, except for MOV CR8, are serializing instructions. transferred to accumulator) is located. The FPU offers a lot of complex and powerful floating-point operations, like SIN, COS, ATAN, SQRT, etc. This instruction copies the contents of that memory location into the accumulator. MOV immediate MNEMONIC 21 20 PSEUDOINSTRUCTION SET NAME CoMPare CoMPare Immediate CMP CMPI LDA MOV FLAGS R[Rn] - R[Rm] FLAGS R[Rn] - ALU1mm R[Rd] R[Rn] + DTAddr R[Rd] = R[Rn] LoaD Address MOVe REGISTER NAME, NAME xo - X7 -X15 X16 (IPO) X17 (IPI) X19-X27 X28 SP X29 FP LR XZR NUMBER, USE, CALL CONVENTION USE uments / Results NUMBER 0-7 9-15 16 18. PC} if the link register has been saved onto a stack. All PTX instructions may be predicated. Only MOV instruction has forms that use direct data offset. I found this. This instruction is a MOV BP,SP. 00,01,10) 2 addresses = 5 bits * 2 = 10 bits total = 2 + 5*2 = 12 (yes) 30 one-address instructions:. 26h ( ES: ) 8B05h (MOV AX, [DI]) I understand that the ES: opcode overrides the MOV opcode so that it references ES:[DI]. · Here if we want the dataarea to be in locked mode even after doing the update by OUT operation, we can use *LOCK in factor-1. They are believed to be valid and are presented in this pre­ liminary stage for feedback to aid in the ultimate implementation. Operands are trhe input variables. A typical CPU opcode uses a certain number of bits in the opcode to denote the instruction class (e. Operands are entities operated upon by the instruction. For example:. Opcode Byte! opcode field specifies the operation performed (mov, xchg, etc)! d (direction) field specifies the direction of data movement: d = 1 data moves from operand specified by R/M field to operand specified by REG field d = 0 data moves from operand specified by REG field to operand specified by R/M field! d position MAY be replaced by "s" bit. Inspired by shikata_ga_nai using fxsave64 to work under x64. Undocumented OpCodes: UMOV UMOV - 0F 10, 0F 11, 0F 12, 0F 13 - User Move Data An undocumented op code used by ICE host software to perform memory cycles to the target system during HALT mode. To load the CS register, use the far JMP, CALL, or RET instruction. Move extended control register to r64. Lets take an example. LDAX (Load accumulator indirect): - The contents of the designated register pair point to a memory location. However, opening MOV files in Camtasia Studio can be frustrating from time to time for the complex video codec of MOV. Two or more instructions of the same type can have the same mnemonic (e. The 6502 will set this flag automatically in response to an interrupt and restore it to its prior status on completion of the interrupt service routine. The only type of file my Kodak video camera produces is. This opcode tries to put a DWORD (32-bit) value into a byte (8-bit). AAA - Ascii Adjust for Addition. MOV works exactly the same as sub. MOV r1,r2: 7F:. 8086 Instruction Encoding-4 Details on Fields Opcode Byte! opcode field specifies the operation performed (mov, xchg, etc)! d (direction) field specifies the direction of data movement: d = 1 data moves from operand specified by R/M field to operand specified by REG field. The value is at a particular memory address, and this memory address is in a register. Emulation64. This instruction moves the hexadecimal number 280 (0x280) to register sp which is a second register in the cpu memory map (Fig. Otherwise it generates a near jump (one-byte opcode followed by a two-byte displacement). MOV f , Wnd Example: MOV 0x7FFF, W1. Lots and Lots of Linker Data. Instructions that Affect Flag Settings(1) Instruction Flag Instruction Flag COV. The instructions can be divided into 5 categories: arithmetic instructions. Only the read instruction of the opcode needs to be added in the successive T states. The following table lists the 8051 instructions by HEX code. An instruction can have zero, one or two parameters. Depends on instruction opcode. 3 Memory Address • The compiler organizes data in memory… it knows the location of every variable (saved in a table)… it can fill in the appropriate mem-address for load-store instructions. MOV A, R1; MOV R0,22H; MOV A, #54H; MOV R2, #40. 00 C EVAL I=%INT(C) 0011. 1 = An illegal opcode detection, an illegal address mode or uninitialized W register used as an Address. Opcodes of Microprocessor | Electricalvoice. For using this app, end users will need an Operator Code,. MOV AX, ES:[DI] to. Timing Diagram for MOV A,B The instruction MOV A,B is a 1-byte instruction. You can see a list of software programs here on www. mov #0x280, sp Use Table 1. For the opcode fetch the IO/M (low active) = 0, S1 = 1 and S0. …Let's talk about how PHP works. We chose to use only the opcodes, which are the part of the instruction that specifies the operation to be performed, in example mov. Here, the upper eight bits of the port address will be 0. The timing diagram of MOV instruction is shown below: In Opcode fetch ( t1-t4 T states ): 00 – lower bit of address where opcode is stored, i. (The result of the shift is the. MOV @R1, #35h ;copy the immediate byte 35h to the address in R1 MOV @R0, 80h ;copy the contents of 80h to the address in R0 MOV @R1, A ;copy the data in A to the address in R1 MOV 80h, @R0 ;copy the contents of the address in R0 to 80h MOV A,@R0 ;copy the contents of the address in R0 to A Note: 1. A ModR/M byte follows the opcode and specifies the operand. ---> Opcode is the portion of a machine language instruction that specifies the operation to be performed. As the 8051 family of Microcontrollers are 8-bit processors, the 8051 Microcontroller Instruction Set is optimized for 8-bit control applications. Opcode sheet for 8085 Microprocessor with description. /lou_checktable POC7 POC4:2: error: opcode 'inglud\x00d5' not def. ADC D 8A 1 6. – Solution: MOV P1, A • General form MOV direct, A • Opcode: 11110101 aaaaaaaa 11110101B 10010000B (F5H,90H) • Ex3-3: What are the machine-language bytes for the following instruction? – Solution: MOV SCON, #55H • General form MOV direct, #data • Opcode: 01110101 aaaaaaaa dddddddd (75H,98H,55H). #4 Opcode is MOV, Datatype is byte, operands are AH (register) and 7 (immediate value) #12 It is a byteswap intruction. Example 1 : Code for MOV CH, BL This instruction transfers 8 bit content of BL into CH The 6 bit Opcode for this instruction is 1000102 D bit indicates whether the register specified by the REG field of byte 2 is a source or destination operand. I have written a PDP-11 assembly language simulator in Javascript. Thus this is an instruction to load register r with the 8-bit value from a specified memory location whose 16-bit address is in HL register pair. Data and SFRs may be manipulated using byte opcodes. mov eax, [fooptr] mov al, [eax] In Masm, either: mov myvar, al or: mov [myvar], al are acceptable - and generate exactly the same code. An opcode obfuscation system is described herein that varies the values of opcodes used by operating system or application code while the application is stored in memory. mov but Camtasia won't recognize those files when I try to import them and I get a 'No. fld dword ptr [ebp+20] fmul dword ptr [ebp+40] fadd dword ptr [eax+10] fstp dword ptr [eax+10] And if it was with doubles it might look like this. The encoding of x86 and x86-64 instructions is well documented in Intel or AMD's manuals. Adobe introduced additional opcodes to AVM2 in Flash Player 10 for Alchemy (C to AS3 conversion magic). Instructions, Operands, and Addressing. Code instruction #256. High disp/addr/data (optional) 6. The only type of file my Kodak video camera produces is. NXOP (Opcode 0Fh 55h) NXOP is a hypercode interface.