3b39572043
kernel: fall back to defaults if int 13h/ah=8 spews bogus data
2020-08-22 23:36:25 +00:00
ff3a59c71e
kernel: properly loop over floppies
2020-08-22 23:36:09 +00:00
fde87d651c
kernel: read A: geometry from BIOS
2020-08-15 21:15:31 +00:00
734ab3852a
Remove skeleton of rom-based kernel
2020-08-15 21:02:30 +00:00
f9b180ea57
Implement file descriptor table and CON as file descriptor
2020-06-28 19:01:14 +02:00
65564b78af
Start working on rom-based kernel
2020-05-29 00:32:30 +02:00
5129a5499e
Implement calculation of number of clusters
2020-05-11 21:19:51 +00:00
1b42f1a480
Implement calculation for FAT position
2020-05-10 16:47:48 +00:00
2cb39a4ff1
Implement lba read
2020-05-08 20:48:23 +00:00
a472c396e7
Implement reading of BPB from FAT partition
2020-05-07 22:56:37 +00:00
8d28dc9f85
Implement reading of partition offset and size
2020-05-06 20:28:30 +00:00
9377924eab
Implement reading geometry info from floppy BPB
2020-05-04 19:49:26 +00:00
36f4673c91
Another attempt on disk i/o
2020-05-02 23:57:23 +02:00
6d1befb49f
kernel/diskio: EBIOS access is first class citizen in kernel
2020-04-28 22:09:56 +02:00
b73bfbe043
Split out kernel components in kernel/
2020-04-27 15:56:41 +02:00
4a92c4bc1e
Drop MCBs as mean to manage memory
2020-04-18 22:59:46 +02:00
f7d3d5c62f
Fix addressing mistake when splitting MCB
2020-04-17 23:59:57 +02:00
6d38a313c7
Implement MCB splitting
2020-04-17 23:33:42 +02:00
6c165f40c0
Create basic MCB at boot
2020-04-17 01:24:23 +02:00
f81de2bfe8
Rename kernel to bdos
2019-10-27 18:59:42 +00:00
da506d36ac
Preserve AX on buffered input
2019-10-20 19:45:55 +00:00
f3a6ae338f
Move out console interfacing into separate file
2019-10-20 19:11:44 +00:00
e86b1ba004
Another attempt at implementing a block layer
2019-10-20 09:56:27 +00:00
e70386bcfb
Mask raw directory bit when giving drive number to int13
2019-10-17 19:19:12 +00:00
b3014ef8e4
Meh
2019-10-16 21:09:31 +00:00
4abfab2812
Test with easier to implement EQU syntax
2019-10-15 20:37:14 +00:00
66f54f639c
WIP on fcb io
2019-10-14 17:59:48 +00:00
a65f54b121
Advance on FCB disk i/o
2019-10-12 18:33:26 +00:00
e07e13fd35
Add hexdump for kernel
2019-10-12 15:10:39 +00:00
7ba68e13f7
Implement CP/M basic char io
2019-10-08 19:53:41 +00:00
7877809bc1
WIP on FCB disk i/o
2019-10-08 17:54:39 +00:00
6e7a6563d5
Improve register hygiene
2019-09-29 21:33:28 +00:00
a0f2a71066
WIP on loading files from disk
2019-09-29 21:25:29 +00:00
1ae3c7a0b9
Implement FCB parsing in kernel
2019-09-29 12:23:39 +00:00
56f9df5773
Throw DOS api away, re-layout memory to fit CP/M model
2019-09-29 08:52:00 +00:00
cc28b42897
Factor out string token search
2019-09-28 12:37:16 +00:00
df8e47803a
Generate rconfig.sys from distfile
...
*.sys files are affected by make clean.
2019-09-25 20:49:32 +00:00
2c2720323c
WIP for config.sys parsing
2019-09-25 20:45:50 +00:00
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
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
93a9c3d5e9
Make drive table data offsets available via defines
2019-09-19 20:12:35 +00:00
d23bba5bdd
Add attempt for drive table to kernel
2019-09-19 20:02:16 +00:00
fc0dd47d48
Remove rom and serial boot methods from qemu testing
2019-09-15 18:01:48 +00:00
6cbcc3efca
Experimental cache.asm not checked in yet
2019-09-10 22:03:50 +00:00
d5ba0f3e30
Remove intr function not in line with int 21h
...
If we have them, use them for setting up ourselves
2019-09-10 21:50:58 +00:00
e86bde72f8
Rework interrupt handling, realign stuff for relative jumps
2019-09-10 21:38:52 +00:00
cd258ccbe4
Work on interrupt subfunctions, remove drvtab experiments
2019-09-08 15:18:37 +00:00
d853b87ec7
Use COM-based format, get bootloader working
2019-09-08 01:04:01 +00:00
11b4d07dc1
Split up kernel and debug rom
2019-09-06 23:42:39 +00:00
4fa383bb2e
Add basic 21h functions
2019-09-05 22:24:39 +00:00
