mirror of https://github.com/hsoft/collapseos.git
47 lines
812 B
NASM
47 lines
812 B
NASM
|
; named shell_.asm to avoid infinite include loop.
|
||
|
|
RAMSTART .equ 0x4000
|
||
|
|
RAMEND .equ 0x5000
|
||
|
|
STDIO_PORT .equ 0x00
|
||
|
|
|
||
|
|
jr init
|
||
|
|
|
||
|
|
init:
|
||
|
|
di
|
||
|
|
; setup stack
|
||
|
|
ld hl, RAMEND
|
||
|
|
ld sp, hl
|
||
|
|
call shellInit
|
||
|
|
jp shellLoop
|
||
|
|
|
||
|
|
#include "core.asm"
|
||
|
|
.define STDIO_GETC call emulGetC
|
||
|
|
.define STDIO_PUTC call emulPutC
|
||
|
|
STDIO_RAMSTART .equ RAMEND
|
||
|
|
#include "stdio.asm"
|
||
|
|
|
||
|
|
BLOCKDEV_RAMSTART .equ STDIO_RAMEND
|
||
|
|
BLOCKDEV_COUNT .equ 1
|
||
|
|
#include "blockdev.asm"
|
||
|
|
; List of devices
|
||
|
|
.dw emulGetC, emulPutC, 0, 0
|
||
|
|
|
||
|
|
#include "blockdev_cmds.asm"
|
||
|
|
|
||
|
|
SHELL_RAMSTART .equ BLOCKDEV_RAMEND
|
||
|
|
.define SHELL_IO_GETC call blkGetCW
|
||
|
|
.define SHELL_IO_PUTC call blkPutC
|
||
|
|
SHELL_EXTRA_CMD_COUNT .equ 2
|
||
|
|
#include "shell.asm"
|
||
|
|
.dw blkBselCmd, blkSeekCmd
|
||
|
|
|
||
|
|
emulGetC:
|
||
|
|
; Blocks until a char is returned
|
||
|
|
in a, (STDIO_PORT)
|
||
|
|
cp a ; ensure Z
|
||
|
|
ret
|
||
|
|
|
||
|
|
emulPutC:
|
||
|
|
out (STDIO_PORT), a
|
||
|
|
ret
|
||
|
|
|