nero/rdos
1
0
Fork 0
Code Pull Requests Releases Activity
DOS-like OS for Intel 8086 / NEC V30
417 Commits 3 Branches 0 Tags 838 KiB
Assembly 87.2%
Awk 8%
C 4%
Makefile 0.6%
Shell 0.2%
a3dfd2c36c
Go to file
Nero a3dfd2c36c add BPB definitions as stand-alone include
2021-12-14 15:24:36 +00:00
boot uartctrl: Implement CP437 to DEC VT character conversion 2021-04-05 18:59:44 +00:00
com sys: parse drive number and load BPB 2021-12-11 16:46:00 +00:00
host Restructure kernel to use 1-segment COM convention 2021-02-07 16:17:31 +00:00
inc Restructure kernel to use 1-segment COM convention 2021-02-07 16:17:31 +00:00
kernel commit whatever is in my worktree rn 2021-12-10 10:41:02 +00:00
lib Revert "Remove unused stuff" 2020-04-04 11:41:01 +00:00
rom Kernel: Fix segmenting bugs 2021-04-20 16:27:10 +00:00
src add BPB definitions as stand-alone include 2021-12-14 15:24:36 +00:00
.gitignore i still dont know what im doing 2020-03-01 16:45:16 +00:00
Makefile update makefile: fixes and enable listings per default 2021-12-12 11:50:32 +00:00
README.md Improve build transparency (documentation and inline version number) 2020-09-17 08:59:22 +00:00

README.md

Primary goals

  • Run on 8086 or up
  • Be able to load and execute a COM program from disk
  • Support for running programs in the NEC V30 8080 emulation mode

Secondary goals

  • CP/M syscall compatibility
  • Terminal emulator for COM1 (like picocom on linux)
  • Boot linux
  • Editor (nano or ed-like)
  • Self-hosting assembler

Building

You can generate a 3.5" floppy image with make fd1440.img, a 5.25" floppy with make fd160.img.

Build requirements:

  • make
  • nasm
  • mtools >=4.0.20 (Debian buster or up)

Useful for testing:

  • C compiler
  • qemu-system-i386

The Makefile has other potentially interesting targets.