Overall, EMU8086 - MICROPROCESSOR EMULATOR will be useful to computing enthusiasts and gearheads, and anyone who happens to work with this legacy processor even today: some computers, particularly in business and industrial applications, still use the 8086. Whether it's to tinker or to work, if you think you might want to emulate the 8086, start here.
Extended mnemonics are often used to support specialized uses of instructions, often for purposes not obvious from the instruction name. For example, many CPU's do not have an explicit NOP instruction, but do have instructions that can be used for the purpose. In 8086 CPUs the instruction xchg ax,ax is used for nop, with nop being a pseudo-opcode to encode the instruction xchg ax,ax. Some disassemblers recognize this and will decode the xchg ax,ax instruction as nop. Similarly, IBM assemblers for System/360 and System/370 use the extended mnemonics NOP and NOPR for BC and BCR with zero masks. For the SPARC architecture, these are known as synthetic instructions.
Emu8086 is a Microprocessor Emulator with integrated 8086 Assembler and Free Tutorial. Emulator runs programs on a Virtual Machine, it emulates real hardware, such as screen, memory and input/output devices. Emu8086 pack combines an advanced source editor with automatic syntax-highlight, assembler, disassembler, software emulator (Virtual PC) with debugger, and step by step tutorials. Emu8086 is complete 'all in one' solution for coding in Assembly Language.
XTOOLS brings you a useful collection of tools you an use in your development projects. ASSEMBLERS: ktop.gif (986 bytes) 6800, 6801/6803, 6805, 6502, 68HC08, 6809, 68HC11, 68HC12, 68HC16, 8048, 8051/52, 80C320, 8080/85, 8086, 8096, Z8, Z80, AVR, H8, ST7,16C5x and C-FLEA. ktop.gif (986 bytes) Output files in either INTEL or MOTOROLA hex format. ktop.gif (986 bytes) Plenty of features and options. DISASSEMBLERS: These are "smart" disassemblers with many features to assist in the generation of complete symbolic/commented ASM source from binary machine code. ktop.gif (986 bytes) 6800, 6801/6803, 6805, 6502, 68HC08, 6809, 68HC11, 68HC12, 68HC16, 8051/52, 8080/85, 8086, 8096, AVR and H8. Generates listing or ASM source format output file. ktop.gif (986 bytes) Accepts user defined symbol table. Can build initial symbol table from references occurring within the input code. ktop.gif (986 bytes) Accepts user defined block types (code, byte data, word data, char data, string data, symbolics allowed etc.) and address ranges. ktop.gif (986 bytes) Accepts file of comments to be merged into the disassembly output. MONITORS: ktop.gif (986 bytes) 6809, 68HC11, 68HC12, 8051/52, 8080/85, 8086, 8096, Z80 and AVR. ktop.gif (986 bytes) Well documented ASM source code. ktop.gif (986 bytes) Completely stand-alone, runs on the bare hardware. ktop.gif (986 bytes) Very compact, occupies less than 8K of ROM. ktop.gif (986 bytes) Built in disassembler (except AVR) ktop.gif (986 bytes) Edit/Dump Memory, Processor registers and Interrupt vectors.. ktop.gif (986 bytes) Multiple breakpoints, which are completely transparent to the user program, and remain effective until removed. ktop.gif (986 bytes) Software Single-Step works even when tracing ROMed code. ktop.gif (986 bytes) Download INTEL or MOTOROLA format hex data. ktop.gif (986 bytes) Revector any/all interrupts to the user program. ktop.gif (986 bytes) Online help display of commands and syntax. ktop.gif (986 bytes) Many more features *** Features may differ in some monitors.
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