nero
/
rdos
1
0
Fork 0
Code Pull Requests Releases Activity
rdos/boot/kernel.asm

64 lines
875 B
NASM
Raw Normal View History

Improve ordering of binary data in kernel
2020-07-04 10:35:38 +02:00
cpu 8086
Fuck up the kernel, i have other ideas now
2020-09-15 21:44:32 +02:00
org 0x7C00
Implement some PoC of reading from disk
2020-04-15 00:17:58 +02:00
Improve ordering of binary data in kernel
2020-07-04 10:35:38 +02:00
%include "inc/bpb.asm"
Fuck up the kernel, i have other ideas now
2020-09-15 21:44:32 +02:00
%include "inc/mbr.asm"
Build drive selection logic for FCBs
2020-10-13 22:10:23 +02:00
%include "inc/fcb.asm"
Protypical implementation of DPT copying
2020-10-25 00:50:23 +02:00
%include "inc/dpt.asm"
Implement some PoC of reading from disk
2020-04-15 00:17:58 +02:00
Fuck up the kernel, i have other ideas now
2020-09-15 21:44:32 +02:00
; kernel stack size in words
%define stacksize 512
kernel: First steps of calculating drive tab data from BPB
2020-08-31 22:11:05 +02:00
Improve ordering of binary data in kernel
2020-07-04 10:35:38 +02:00
init: cli
xor ax, ax
mov ds, ax
mov es, ax
mov ss, ax
mov sp, ( stack+stacksize )
Implement whacky first version for 25h disk read
2020-04-26 23:14:34 +02:00
Add printf facility for kernel to allow debug messages on phys. system
2020-12-26 17:03:15 +01:00
call printf
%defstr VERSIONSTR VERSION
db "RDOS ", VERSIONSTR, 0x0A, 0x0D, 0
kernel: implement diskio using drive table
2020-08-27 22:52:16 +02:00
Support managing floppy parameter table
2020-12-22 22:14:16 +01:00
push dx
call dinit
pop dx
Build drive selection logic for FCBs
2020-10-13 22:10:23 +02:00
cmp dl, 0x80
jc .k
sub dl, (0x80-2)
.k: mov [defdrv], dl
Add support for hard disks
2020-12-26 18:44:48 +01:00
call logdrv
Implement map-like sector access for floppy drives
2020-12-16 00:29:35 +01:00
xor ax, ax
xor dx, dx
call maprd
inc word [dskbuf+0x82]
Add support for hard disks
2020-12-26 18:44:48 +01:00
push word [dskbuf+0x82]
Implement map-like sector access for floppy drives
2020-12-16 00:29:35 +01:00
call dirty
call flush
Lay out skeletons for FCB handling
2020-10-11 23:33:01 +02:00
Add support for hard disks
2020-12-26 18:44:48 +01:00
call printf
db "Current run: ",2,0x0A,0x0D,0
Fuck up the kernel, i have other ideas now
2020-09-15 21:44:32 +02:00
hlt: hlt
jmp hlt
Implement int 29h: Fast console output
2020-04-20 19:13:06 +02:00
Protypical implementation of DPT copying
2020-10-25 00:50:23 +02:00
%include "kernel/far.asm"
Build drive selection logic for FCBs
2020-10-13 22:10:23 +02:00
%include "kernel/fcb.asm"
%include "kernel/drive.asm"
Add printf facility for kernel to allow debug messages on phys. system
2020-12-26 17:03:15 +01:00
%include "kernel/printf.asm"
Build drive selection logic for FCBs
2020-10-13 22:10:23 +02:00
section .data
testfcb: db 0
db "HELLO ", "COM"
times 30 db 0
Load kernel from reserved sectors in fatfs
2020-09-17 07:57:46 +02:00
Place variables into area after binary
2020-04-23 21:36:20 +02:00
section .bss
Fuck up the kernel, i have other ideas now
2020-09-15 21:44:32 +02:00
stack: resb stacksize