collapseos/recipes/rc2014/eeprom/glue.asm

73 lines
1.2 KiB
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
.equ RAMSTART 0x8000
.equ RAMEND 0xffff
.equ ACIA_CTL 0x80 ; Control and status. RS off.
.equ ACIA_IO 0x81 ; Transmit. RS on.
jp init
; interrupt hook
.fill 0x38-$
jp aciaInt
.inc "err.h"
.inc "core.asm"
.inc "parse.asm"
.equ ACIA_RAMSTART RAMSTART
.inc "acia.asm"
.equ MMAP_START 0xd000
.inc "mmap.asm"
.equ BLOCKDEV_RAMSTART ACIA_RAMEND
.equ BLOCKDEV_COUNT 1
.inc "blockdev.asm"
; List of devices
.dw mmapGetB, mmapPutB
.equ STDIO_RAMSTART BLOCKDEV_RAMEND
.equ STDIO_GETC aciaGetC
.equ STDIO_PUTC aciaPutC
.inc "stdio.asm"
.equ AT28W_RAMSTART STDIO_RAMEND
.inc "at28w/main.asm"
.equ SHELL_RAMSTART AT28W_RAMEND
.equ SHELL_EXTRA_CMD_COUNT 5
.inc "shell.asm"
; Extra cmds
.dw a28wCmd
.dw blkBselCmd, blkSeekCmd, blkLoadCmd, blkSaveCmd
.inc "blockdev_cmds.asm"
init:
di
; setup stack
ld hl, RAMEND
ld sp, hl
im 1
call aciaInit
call shellInit
xor a
ld de, BLOCKDEV_SEL
call blkSel
ei
jp shellLoop
a28wCmd:
.db "a28w", 0b011, 0b001, 0
ld a, (hl)
2019-06-14 21:11:45 -04:00
ld (AT28W_MAXBYTES), a
inc hl
ld a, (hl)
2019-06-14 21:11:45 -04:00
ld (AT28W_MAXBYTES+1), a
jp at28wInner