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
440187c2a8
Harden drive.asm against unexpected DS and ES values
2021-01-13 18:32:17 +00:00
Nero
750bfbdc60
Remove outdated comments
2021-01-05 00:15:36 +00:00
Nero
3f8cfaac42
Remove debugging output
2021-01-03 18:10:54 +00:00
Nero
9a1c4139a6
Implement searching directory for exact matches
2021-01-02 02:07:40 +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
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
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
ff3a59c71e
kernel: properly loop over floppies
2020-08-22 23:36:09 +00:00
Nero
fde87d651c
kernel: read A: geometry from BIOS
2020-08-15 21:15:31 +00:00
Nero
e86b1ba004
Another attempt at implementing a block layer
2019-10-20 09:56:27 +00:00
Nero
e70386bcfb
Mask raw directory bit when giving drive number to int13
2019-10-17 19:19:12 +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
7877809bc1
WIP on FCB disk i/o
2019-10-08 17:54:39 +00:00
Nero
a0f2a71066
WIP on loading files from disk
2019-09-29 21:25:29 +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
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
93a9c3d5e9
Make drive table data offsets available via defines
2019-09-19 20:12:35 +00:00
Nero
d23bba5bdd
Add attempt for drive table to kernel
2019-09-19 20:02:16 +00:00
Nero