collapseos/recipes/rc2014/glue.asm
Virgil Dupras 2e8af376e3 pgm: new kernel module
The pgm module implements a shell hook so that when an unknown command
is typed, we look into the mounted filesystem and look for a file with
the same name as the command. If we find one, we load it in memory and
run it.
2019-05-31 14:54:15 -04:00

48 lines
851 B
NASM

; 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
#include "core.asm"
#include "parse.asm"
.equ ACIA_RAMSTART RAMSTART
#include "acia.asm"
.equ BLOCKDEV_RAMSTART ACIA_RAMEND
.equ BLOCKDEV_COUNT 1
#include "blockdev.asm"
; List of devices
.dw aciaGetC, aciaPutC, 0, 0
.equ STDIO_RAMSTART BLOCKDEV_RAMEND
#include "stdio.asm"
.equ SHELL_RAMSTART STDIO_RAMEND
.equ SHELL_EXTRA_CMD_COUNT 0
#include "shell.asm"
init:
di
; setup stack
ld hl, RAMEND
ld sp, hl
im 1
call aciaInit
xor a
ld de, BLOCKDEV_GETC
call blkSel
call stdioInit
call shellInit
ei
jp shellLoop