collapseos/recipes/rc2014/glue.asm

48 lines
851 B
NASM
Raw Normal View History

; classic RC2014 setup (8K ROM + 32K RAM) and a stock Serial I/O module
; The RAM module is selected on A15, so it has the range 0x8000-0xffff
RAMSTART .equ 0x8000
RAMEND .equ 0xffff
ACIA_CTL .equ 0x80 ; Control and status. RS off.
ACIA_IO .equ 0x81 ; Transmit. RS on.
2019-05-17 08:14:19 -04:00
jp init
; interrupt hook
.fill 0x38-$
jp aciaInt
2019-05-17 08:14:19 -04:00
#include "core.asm"
#include "parse.asm"
2019-05-17 08:14:19 -04:00
ACIA_RAMSTART .equ RAMSTART
#include "acia.asm"
BLOCKDEV_RAMSTART .equ ACIA_RAMEND
BLOCKDEV_COUNT .equ 1
#include "blockdev.asm"
; List of devices
.dw aciaGetC, aciaPutC, 0, 0
STDIO_RAMSTART .equ BLOCKDEV_RAMEND
#include "stdio.asm"
SHELL_RAMSTART .equ STDIO_RAMEND
SHELL_EXTRA_CMD_COUNT .equ 0
#include "shell.asm"
init:
di
; setup stack
ld hl, RAMEND
ld sp, hl
im 1
2019-05-17 08:14:19 -04:00
call aciaInit
2019-05-17 08:14:19 -04:00
xor a
ld de, BLOCKDEV_GETC
call blkSel
call stdioInit
call shellInit
ei
jp shellLoop