Nero
d9affa3cae
Kernel: Fix segmenting bugs
2021-04-20 16:27:10 +00:00
Nero
39a1ed085c
Implement reading/writing a DTA full from a cluster without ptr advance
2021-04-05 23:05:08 +00:00
Nero
b617709684
Fix rootdir.asm re-using potentially wrong DS
2021-03-19 19:26:38 +00:00
Nero
5e3ae0aa08
Put rootdir and cluster access into separate files
2021-03-19 19:01:38 +00:00
Nero
fbab632616
Implement file open
2021-03-19 18:50:50 +00:00
Nero
f702006582
implement fcb search with more efficient segmenting and dta use
2021-02-25 00:45:56 +00:00
Nero
7c4b84ecb3
word-align disk buffer
2021-02-19 19:41:34 +00:00
Nero
ec205407a7
fix conout using stray DS
2021-02-19 19:41:24 +00:00
Nero
a91fb3de0d
Implement common char i/o functions
2021-02-19 08:57:21 +00:00
Nero
78233db88d
fix nasm orphaned labels warnings
2021-02-18 20:20:14 +00:00
Nero
84b754551c
Restructure kernel to use 1-segment COM convention
2021-02-07 16:17:31 +00:00
Nero
ebd356ed8e
Implement file search in directory
2021-01-23 17:32:53 +00:00
Nero
4530866130
fix psp/setdta corrupting DS
2021-01-21 22:30:35 +00:00
Nero
1ec84fc411
Single out PSP management
2021-01-21 22:28:57 +00:00
Nero
3056d659fa
fix syscall gateway not preserving DS on entry
2021-01-13 18:36:12 +00:00
Nero
440187c2a8
Harden drive.asm against unexpected DS and ES values
2021-01-13 18:32:17 +00:00
Nero
df243e668e
Remove PIC functionality from syscall.asm
...
Makes things easier
2021-01-13 17:38:22 +00:00
Nero
4046dd7d6c
Improve syscall entrypoint
2021-01-13 17:20:49 +00:00
Nero
750bfbdc60
Remove outdated comments
2021-01-05 00:15:36 +00:00
Nero
34023678a4
Implement current drive for user programs
2021-01-04 23:29:50 +00:00
Nero
7e2e91b2b7
Reorder code and remove unused farptr components
2021-01-04 23:19:14 +00:00
Nero
0256d6ab36
Improve syscall gateway: now position-independent
...
Also it now keeps all register values except SS:SP on entry.
2021-01-04 23:01:14 +00:00
Nero
fb4bbfc8cf
Continued development on int 21h interface
2021-01-03 18:11:41 +00:00
Nero
3f8cfaac42
Remove debugging output
2021-01-03 18:10:54 +00:00
Nero
1dbfb2f592
Implement entrypoint and table for syscalls
2021-01-02 03:45:03 +00:00
Nero
015eea2f2f
Rename fndfst to open
2021-01-02 02:48:04 +00:00
Nero
9a1c4139a6
Implement searching directory for exact matches
2021-01-02 02:07:40 +00:00
Nero
7754312609
remove unused kernel/main
2020-12-27 00:25:30 +00:00
Nero
2bb40e315c
Fix ebios dap packet: wrong size
2020-12-26 20:58:51 +00:00
Nero
af5df85c16
Use ebios extensions if enabled
2020-12-26 20:54:39 +00:00
Nero
c75b323d31
Add support for hard disks
2020-12-26 17:44:48 +00:00
Nero
b8b56e1f45
make logdrv also use int13 stub
2020-12-26 16:43:04 +00:00
Nero
c5afc6ec61
Add printf facility for kernel to allow debug messages on phys. system
2020-12-26 16:03:15 +00:00
Nero
424e174523
drive i/o: improvements regarding reset and stack usage
...
- read and write now run in the same function, less branching
- implemented on-demand controller reset
- set up a function stub for int 0x13 for later stack switching
2020-12-26 14:40:43 +00:00
Nero
0a2a0e4659
Support managing floppy parameter table
2020-12-22 21:14:16 +00:00
Nero
f10fa026cf
Add support for floppy types with other geometry than 18/2/80
2020-12-18 18:29:26 +00:00
Nero
de04b5ca01
Make logging in drive a no-op if drive already logged in
2020-12-17 00:41:53 +00:00
Nero
bd3b27362d
skip reads when sector number already matches
2020-12-17 00:10:02 +00:00
Nero
e096745c13
Implement map-like sector access for floppy drives
2020-12-15 23:29:35 +00:00
Nero
6bdb1da2ed
Read disk geometry and DPT from BIOS
2020-10-30 09:29:22 +00:00
Nero
50aa6e4eec
Use uppercase non-struct constants for BPB
2020-10-25 09:15:33 +00:00
Nero
dc6035fe9d
Protypical implementation of DPT copying
2020-10-24 22:50:23 +00:00
Nero
c41782c78f
Build drive selection logic for FCBs
2020-10-13 20:10:23 +00:00
Nero
4e779c5a22
Lay out skeletons for FCB handling
2020-10-11 21:33:01 +00:00
Nero
303b1756e0
Fuck up the kernel, i have other ideas now
2020-09-15 21:44:32 +02:00
Nero
79c902c197
kernel: Fix borked ax assignment
2020-08-31 20:21:10 +00:00
Nero
352540bd25
kernel: First steps of calculating drive tab data from BPB
2020-08-31 20:11:05 +00:00
Nero
f0a000b7d1
kernel: implement diskio using drive table
2020-08-27 20:52:16 +00:00
Nero
4a294ee21c
kernel: fix advancing of drive table pointer during drive init
2020-08-22 23:38:11 +00:00
Nero
3b39572043
kernel: fall back to defaults if int 13h/ah=8 spews bogus data
2020-08-22 23:36:25 +00:00
Nero