rdos/bdos/main.asm

cpu 8086

self:    equ 0xF000
diskbuf: equ (self-0x200) ; deblocking
stack:   equ (diskbuf) ; grows down
defdrv:  equ 4

org self
jmp init
pad 3

self_offset:
  db (self >> 8)

banner:
  db "RDOS 2019-09", 0x0A, 0x0D, '$', 0

init:
  mov sp, stack
  mov byte [defdrv], 0x01

  mov dx, banner
  call print_string

  call disk_parm_init

  mov dx, 0x7F
  mov byte [0x7F], 0x7F
  mov byte [0x80], 2
  call read_buffer

  int3

  cli
.halt:
  hlt
  jmp .halt

init_program:
  db "HELLO.COM", 0

; helper function for idle loops
idle:
  pushf
  sti
  hlt
  popf
  ret

%include "syscall.asm"

%include "con86.asm"

%include "exec.asm"
%include "fdc.asm"
%include "fcb.asm"
%include "fcbparse.asm"

%include "disk.asm"

%include "log2.asm"
%include "dump.asm"
Change kernel blob format to be option rom compatible 2019-04-20 23:02:35 +02:00			`cpu 8086`
Work on interrupt subfunctions, remove drvtab experiments 2019-09-08 17:18:37 +02:00
Test with easier to implement EQU syntax 2019-10-15 22:19:55 +02:00			`self: equ 0xF000`
			`diskbuf: equ (self-0x200) ; deblocking`
			`stack: equ (diskbuf) ; grows down`
			`defdrv: equ 4`
WIP on loading files from disk 2019-09-29 23:25:29 +02:00
Throw DOS api away, re-layout memory to fit CP/M model 2019-09-29 10:52:00 +02:00			`org self`
			`jmp init`
Test with easier to implement EQU syntax 2019-10-15 22:19:55 +02:00			`pad 3`

			`self_offset:`
			`db (self >> 8)`
Add basic 21h functions 2019-09-06 00:24:39 +02:00
Throw DOS api away, re-layout memory to fit CP/M model 2019-09-29 10:52:00 +02:00			`banner:`
Implement CP/M basic char io 2019-10-08 21:53:41 +02:00			`db "RDOS 2019-09", 0x0A, 0x0D, '$', 0`
Add attempt for drive table to kernel 2019-09-19 22:02:16 +02:00
Rework interrupt handling, realign stuff for relative jumps 2019-09-10 23:38:52 +02:00			`init:`
Throw DOS api away, re-layout memory to fit CP/M model 2019-09-29 10:52:00 +02:00			`mov sp, stack`
Test with easier to implement EQU syntax 2019-10-15 22:19:55 +02:00			`mov byte [defdrv], 0x01`
Work on interrupt subfunctions, remove drvtab experiments 2019-09-08 17:18:37 +02:00
Implement CP/M basic char io 2019-10-08 21:53:41 +02:00			`mov dx, banner`
			`call print_string`
Implement FCB parsing in kernel 2019-09-29 14:23:39 +02:00
Another attempt at implementing a block layer 2019-10-20 11:56:27 +02:00			`call disk_parm_init`

Move out console interfacing into separate file 2019-10-20 21:11:44 +02:00			`mov dx, 0x7F`
			`mov byte [0x7F], 0x7F`
			`mov byte [0x80], 2`
			`call read_buffer`

			`int3`
Rework interrupt handling, realign stuff for relative jumps 2019-09-10 23:38:52 +02:00
			`cli`
			`.halt:`
			`hlt`
			`jmp .halt`
Add basic 21h functions 2019-09-06 00:24:39 +02:00
Implement FCB parsing in kernel 2019-09-29 14:23:39 +02:00			`init_program:`
			`db "HELLO.COM", 0`

Move out console interfacing into separate file 2019-10-20 21:11:44 +02:00			`; helper function for idle loops`
			`idle:`
			`pushf`
			`sti`
			`hlt`
			`popf`
Throw DOS api away, re-layout memory to fit CP/M model 2019-09-29 10:52:00 +02:00			`ret`

Move out console interfacing into separate file 2019-10-20 21:11:44 +02:00			`%include "syscall.asm"`

			`%include "con86.asm"`
Throw DOS api away, re-layout memory to fit CP/M model 2019-09-29 10:52:00 +02:00
Implement FCB parsing in kernel 2019-09-29 14:23:39 +02:00			`%include "exec.asm"`
Meh 2019-10-16 23:09:31 +02:00			`%include "fdc.asm"`
Implement FCB parsing in kernel 2019-09-29 14:23:39 +02:00			`%include "fcb.asm"`
WIP on FCB disk i/o 2019-10-08 19:54:39 +02:00			`%include "fcbparse.asm"`
Move out console interfacing into separate file 2019-10-20 21:11:44 +02:00
Another attempt at implementing a block layer 2019-10-20 11:56:27 +02:00			`%include "disk.asm"`
Move out console interfacing into separate file 2019-10-20 21:11:44 +02:00
WIP on FCB disk i/o 2019-10-08 19:54:39 +02:00			`%include "log2.asm"`
Advance on FCB disk i/o 2019-10-12 20:33:26 +02:00			`%include "dump.asm"`