Nero
6f7fc05171
log2: implement using left rotate through carry
2019-10-19 12:51:11 +00:00
Nero
6c23ec2fed
Fix boot order for floppy test
2019-10-19 12:47:23 +00:00
Nero
7d99526b55
debug.rom: show banner when loaded
2019-10-18 21:48:29 +00:00
Nero
ec4bdf649d
Rename programs/ to com/
2019-10-18 14:43:28 +00:00
Nero
50e58765b1
Improve debug rom to catch common exception conditions
2019-10-18 13:50:42 +00:00
Nero
e70386bcfb
Mask raw directory bit when giving drive number to int13
2019-10-17 19:19:12 +00:00
Nero
b3014ef8e4
Meh
2019-10-16 21:09:31 +00:00
Nero
4abfab2812
Test with easier to implement EQU syntax
2019-10-15 20:37:14 +00:00
Nero
7dec8b6c81
Use nasm compat file to allow custom asm variant
...
(I dont want to re-implement all those nasm features later)
2019-10-14 21:04:42 +00:00
Nero
66f54f639c
WIP on fcb io
2019-10-14 17:59:48 +00:00
Nero
a65f54b121
Advance on FCB disk i/o
2019-10-12 18:33:26 +00:00
Nero
e07e13fd35
Add hexdump for kernel
2019-10-12 15:10:39 +00:00
Nero
f6b8df0598
Remove misplaced data
2019-10-12 15:10:19 +00:00
Nero
b641b5b441
Cosmetic fixes for emulator
2019-10-08 19:54:13 +00:00
Nero
7ba68e13f7
Implement CP/M basic char io
2019-10-08 19:53:41 +00:00
Nero
7877809bc1
WIP on FCB disk i/o
2019-10-08 17:54:39 +00:00
Nero
58a95932b5
Cosmetic changes for README
2019-10-08 10:24:36 +00:00
Nero
695a28cb0a
Fix table in readme
2019-10-08 10:23:28 +00:00
Nero
7e8483053c
Write down some ideas in README
2019-10-08 10:22:31 +00:00
Nero
9bce345a3b
Add string prefixes and inc/dec to emulator
2019-10-04 22:54:37 +00:00
Nero
569e11aceb
Advance work on emulator/assembler combo
2019-10-04 21:54:10 +00:00
Nero
2d7707598a
Ignore emul binary in the future
2019-10-03 17:01:42 +00:00
Nero
55db78a15d
Clean up code for conditional jumps
...
Amended: A binary file got in there
2019-10-03 17:00:00 +00:00
Nero
305663c110
Improve flag handling for emulator
2019-10-02 19:14:18 +00:00
Nero
a30f4f3287
Advance on 8086 emulator
2019-10-01 21:35:01 +00:00
Nero
6e7a6563d5
Improve register hygiene
2019-09-29 21:33:28 +00:00
Nero
d1dab01633
Rename rdos.sys to rdos.bin
...
*.sys is meant for DOS-like driver binaries. I actually have a flat
binary with a specific load offset.
2019-09-29 21:26:59 +00:00
Nero
a0f2a71066
WIP on loading files from disk
2019-09-29 21:25:29 +00:00
Nero
0896c77ae6
Remove config.sys
2019-09-29 21:21:24 +00:00
Nero
bedceb28a4
Add some arithmetics to emulator
2019-09-29 12:23:59 +00:00
Nero
1ae3c7a0b9
Implement FCB parsing in kernel
2019-09-29 12:23:39 +00:00
Nero
56f9df5773
Throw DOS api away, re-layout memory to fit CP/M model
2019-09-29 08:52:00 +00:00
Nero
2935d7ee6c
Improve emulator
2019-09-28 20:38:35 +00:00
Nero
fcb4db25ad
Add emulator to run 8086 native assembler on linux
2019-09-28 19:09:51 +00:00
Nero
59f0720934
Rename scripts to utils
2019-09-28 19:07:40 +00:00
Nero
f75cc3b620
Generate lst files for every binary when in debug mode
2019-09-28 13:38:29 +00:00
Nero
cc28b42897
Factor out string token search
2019-09-28 12:37:16 +00:00
Nero
7f9820bace
Add lib function for MCB allocation from bootsectors
2019-09-26 14:57:20 +00:00
Nero
e878ad0880
Remove DOS lineendings
2019-09-26 14:55:46 +00:00
Nero
62a15d52bb
Save some bytes on printing hexnumbers
2019-09-26 14:53:50 +00:00
Nero
df8e47803a
Generate rconfig.sys from distfile
...
*.sys files are affected by make clean.
2019-09-25 20:49:32 +00:00
Nero
2c2720323c
WIP for config.sys parsing
2019-09-25 20:45:50 +00:00
Nero
80a7b03ddc
Provide config file via CX (len) and BX (ptr) to kernel entry
2019-09-24 21:33:04 +00:00
Nero
a4e6a943b0
Make bootloader load both kernel and kernel config
2019-09-24 21:14:29 +00:00
Nero
6411dc0c9c
Turn CHS fields in drive table into words
...
CHS arithmetic will be done on 32-bit integers, the operand for division
of DX:AX is a word, so we save a conversion step.
Additionally, i might reuse these fields for pointing to a SYS driver later.
2019-09-24 08:16:22 +00:00
Nero
cd7aafde09
Run kernel with from offset 0
...
I try to get the interrupt handlers into a offset as low as possible.
This is necessity if i want to relocate it later on its own.
For running from HMA, a minimal offset of 16 bytes would still be
necessary.
2019-09-23 22:06:29 +00:00
Nero
df4d3a90e3
Use SYS extension for kernel
2019-09-23 22:05:01 +00:00
Nero
0b7d141af7
Add warning about mformat overwriting bootsector code
2019-09-23 21:19:12 +00:00
Nero
705cd5c725
Remove command line parsing from bootloader
2019-09-23 20:25:39 +00:00
Nero
e94059c625
Fix wrong filename for VBR
2019-09-22 22:11:41 +00:00
Nero