italotoffolo/i8086.js

16bit Intel 8086 / 80186 + X87 emulator written in TypeScript with REPL assembly compiler and tiny C compiler

i8086.js

16 bit x86 virtual machine and assembler simulator written in TypeScript. It is designed to help with prototyping small bootsector (or bigger) real mode games 🎮 and apps 💻.

Used libs:

• Express.JS
• NestJS
• React
• Ramda
• TypeORM

Running

yarn run develop

ASM syntax

It's pretty similar to NASM syntax (including preprocessor), examples:
https://github.com/Mati365/i8086.js/tree/master/packages/compiler-x86-assembler/tests/asm

Testing

yarn run test

Status

• ASM Compiler
  • NASM syntax instruction compiler matcher with expression eval mov ax, byte [ds:label+bx+12+(1/3)]
  • Instruction prefix support rep movsw
  • Compiler bits/org config [bits 16], [org 0x7C00]
  • Labels support jmp_label:
  • Data define support db, dw, dd, dq, dt
  • EQU, times support
  • Floating point numbers support
  • Preprocessor
    • Basic lang keywords support: %if, %ifn, %ifdef, %ifndef, %else, %elif, %elifndef, %elifdef, %elifn, %define, %undef
    • Macros support: %macro, %define, %imacro
    • Predefined macros like __TIMES__
    • Inline expressions calls %[__TIMES__]
  • Output logger
    • Basic logger binary blob serializer helpers
    • Diassembler binary view
    • Branch arrows (for jmp, call, jz etc.)
• CPU Emulator
  • Magic breakpoint support xchg bx, bx
  • Interrupts handlers support
  • Basic Intel ~80186 instructions set
  • ALU instructions support
  • FPU Support
    • Assembler
    • Emulator
  • Basic PIT/PIC support
    • PIT
    • PIC
    • IDE
    • PS2
  • Graphics mode
    • Basic canvas graphics driver
    • Text Mode
    • Graphics VGA
    • VGA IO ports bindings
  • BIOS
    • Basic bios interrupt handlers
• App frontend
  • Basic front CSS UI
  • Debugger
• Nano C compiler
  • Frontend
    • Syntax parser
  • Backend
    • X86-16 Code generator

Screens

Docs

https://books.google.pl/books?id=Lq4yDwAAQBAJ&pg=PA120&lpg=PA120&dq=chain4+mode&source=bl&ots=Eun_wNFE7b&sig=ACfU3U37tSXE7qOZn0AKGeFwaaNLS4nrKg&hl=pl&sa=X&ved=2ahUKEwjlupT5-u_pAhVNxhoKHVfRA7YQ6AEwAnoECAoQAQ#v=onepage&q=chain4%20mode&f=false

https://bellard.org/otcc/otccn.c

https://bellard.org/otcc/

https://gist.github.com/nikAizuddin/0e307cac142792dcdeba

http://www.plantation-productions.com/Webster/www.artofasm.com/Windows/HTML/RealArithmetica3.html

https://gist.github.com/mikesmullin/6259449

http://teaching.idallen.com/dat2343/10f/notes/040_overflow.txt

http://ece425web.groups.et.byu.net/stable/labs/8086Assembly.html

http://dsearls.org/courses/C391OrgSys/IntelAL/8086_instruction_set.html

https://pdos.csail.mit.edu/6.828/2008/readings/i386/s17_02.htm

https://xem.github.io/minix86/manual/intel-x86-and-64-manual-vol1/o_7281d5ea06a5b67a-194.html

https://johnloomis.org/ece314/notes/fpu/fpu.pdf

https://www.felixcloutier.com/x86/index.html

https://c9x.me/x86/html/file_module_x86_id_87.html

http://www.osdever.net/FreeVGA/vga/graphreg.htm#06

http://www.osdever.net/FreeVGA/vga/vgamem.htm

http://www.osdever.net/FreeVGA/home.htm

License

The MIT License (MIT) Copyright (c) 2020 Mateusz Bagiński

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.