Commit Graph

260 Commits

Author SHA1 Message Date
Ain
7877809bc1 WIP on FCB disk i/o 2019-10-08 17:54:39 +00:00
Ain
58a95932b5 Cosmetic changes for README 2019-10-08 10:24:36 +00:00
Ain
695a28cb0a Fix table in readme 2019-10-08 10:23:28 +00:00
Ain
7e8483053c Write down some ideas in README 2019-10-08 10:22:31 +00:00
Ain
9bce345a3b Add string prefixes and inc/dec to emulator 2019-10-04 22:54:37 +00:00
Ain
569e11aceb Advance work on emulator/assembler combo 2019-10-04 21:54:10 +00:00
Ain
2d7707598a Ignore emul binary in the future 2019-10-03 17:01:42 +00:00
Ain
55db78a15d Clean up code for conditional jumps
Amended: A binary file got in there
2019-10-03 17:00:00 +00:00
Ain
305663c110 Improve flag handling for emulator 2019-10-02 19:14:18 +00:00
Ain
a30f4f3287 Advance on 8086 emulator 2019-10-01 21:35:01 +00:00
Ain
6e7a6563d5 Improve register hygiene 2019-09-29 21:33:28 +00:00
Ain
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
Ain
a0f2a71066 WIP on loading files from disk 2019-09-29 21:25:29 +00:00
Ain
0896c77ae6 Remove config.sys 2019-09-29 21:21:24 +00:00
Ain
bedceb28a4 Add some arithmetics to emulator 2019-09-29 12:23:59 +00:00
Ain
1ae3c7a0b9 Implement FCB parsing in kernel 2019-09-29 12:23:39 +00:00
Ain
56f9df5773 Throw DOS api away, re-layout memory to fit CP/M model 2019-09-29 08:52:00 +00:00
Ain
2935d7ee6c Improve emulator 2019-09-28 20:38:35 +00:00
Ain
fcb4db25ad Add emulator to run 8086 native assembler on linux 2019-09-28 19:09:51 +00:00
Ain
59f0720934 Rename scripts to utils 2019-09-28 19:07:40 +00:00
Ain
f75cc3b620 Generate lst files for every binary when in debug mode 2019-09-28 13:38:29 +00:00
Ain
cc28b42897 Factor out string token search 2019-09-28 12:37:16 +00:00
Ain
7f9820bace Add lib function for MCB allocation from bootsectors 2019-09-26 14:57:20 +00:00
Ain
e878ad0880 Remove DOS lineendings 2019-09-26 14:55:46 +00:00
Ain
62a15d52bb Save some bytes on printing hexnumbers 2019-09-26 14:53:50 +00:00
Ain
df8e47803a Generate rconfig.sys from distfile
*.sys files are affected by make clean.
2019-09-25 20:49:32 +00:00
Ain
2c2720323c WIP for config.sys parsing 2019-09-25 20:45:50 +00:00
Ain
80a7b03ddc Provide config file via CX (len) and BX (ptr) to kernel entry 2019-09-24 21:33:04 +00:00
Ain
a4e6a943b0 Make bootloader load both kernel and kernel config 2019-09-24 21:14:29 +00:00
Ain
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
Ain
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
Ain
df4d3a90e3 Use SYS extension for kernel 2019-09-23 22:05:01 +00:00
Ain
0b7d141af7 Add warning about mformat overwriting bootsector code 2019-09-23 21:19:12 +00:00
Ain
705cd5c725 Remove command line parsing from bootloader 2019-09-23 20:25:39 +00:00
Ain
e94059c625 Fix wrong filename for VBR 2019-09-22 22:11:41 +00:00
Ain
d19ba03cfd Fix make clean 2019-09-21 18:18:20 +00:00
Ain
54149839a3 Rename fatvbr -> fat, generalize makefile 2019-09-21 18:05:41 +00:00
Ain
e9b19ce989 Fix makefile dependencies 2019-09-21 15:26:03 +00:00
Ain
7514bd27c3 Rename printf file for more consistent naming 2019-09-20 23:39:57 +00:00
Ain
93a9c3d5e9 Make drive table data offsets available via defines 2019-09-19 20:12:35 +00:00
Ain
d23bba5bdd Add attempt for drive table to kernel 2019-09-19 20:02:16 +00:00
Ain
7d7b4a89e6 Make mechanism for using qemu with option roms generic 2019-09-18 11:03:21 +00:00
Ain
c70f388548 Get MBR ready, add hdimage target 2019-09-17 22:41:39 +00:00
Ain
7c4a618385 Add first attempt of a MBR 2019-09-17 21:53:10 +00:00
Ain
da03aa1481 Relocate boot sector to 0x600 2019-09-16 12:05:15 +00:00
Ain
cff186a1bb Make better use of mformat features 2019-09-16 10:26:48 +00:00
Ain
fe42e9145a fatvbr: correctly setup segment registers 2019-09-15 19:49:58 +00:00
Ain
956df75dae Add mechanism for additional files on floppy 2019-09-15 19:03:08 +00:00
Ain
fc0dd47d48 Remove rom and serial boot methods from qemu testing 2019-09-15 18:01:48 +00:00
Ain
bfb5b227b6 Fix cmdline setup in fatvbr 2019-09-15 17:51:44 +00:00