mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-24 11:18:06 +11:00
57 lines
1010 B
NASM
57 lines
1010 B
NASM
|
.equ RAMSTART 0x8000
|
||
|
|
.equ RAMEND 0xffff
|
||
|
|
.equ ACIA_CTL 0x80 ; Control and status. RS off.
|
||
|
|
.equ ACIA_IO 0x81 ; Transmit. RS on.
|
||
|
|
.equ DIGIT_IO 0x00 ; digital I/O's port
|
||
|
|
|
||
|
|
jp init
|
||
|
|
|
||
|
|
; interrupt hook
|
||
|
|
.fill 0x38-$
|
||
|
|
jp aciaInt
|
||
|
|
|
||
|
|
.inc "err.h"
|
||
|
|
.inc "ascii.h"
|
||
|
|
.inc "core.asm"
|
||
|
|
.inc "str.asm"
|
||
|
|
.equ ACIA_RAMSTART RAMSTART
|
||
|
|
.inc "acia.asm"
|
||
|
|
|
||
|
|
.equ STDIO_RAMSTART ACIA_RAMEND
|
||
|
|
.equ STDIO_GETC aciaGetC
|
||
|
|
.equ STDIO_PUTC aciaPutC
|
||
|
|
.inc "stdio.asm"
|
||
|
|
|
||
|
|
; *** BASIC ***
|
||
|
|
|
||
|
|
; RAM space used in different routines for short term processing.
|
||
|
|
.equ SCRATCHPAD_SIZE 0x20
|
||
|
|
.equ SCRATCHPAD STDIO_RAMEND
|
||
|
|
.inc "lib/util.asm"
|
||
|
|
.inc "lib/ari.asm"
|
||
|
|
.inc "lib/parse.asm"
|
||
|
|
.inc "lib/fmt.asm"
|
||
|
|
.equ EXPR_PARSE parseLiteralOrVar
|
||
|
|
.inc "lib/expr.asm"
|
||
|
|
.inc "basic/util.asm"
|
||
|
|
.inc "basic/parse.asm"
|
||
|
|
.inc "basic/tok.asm"
|
||
|
|
.equ VAR_RAMSTART SCRATCHPAD+SCRATCHPAD_SIZE
|
||
|
|
.inc "basic/var.asm"
|
||
|
|
.equ BUF_RAMSTART VAR_RAMEND
|
||
|
|
.inc "basic/buf.asm"
|
||
|
|
.equ BAS_RAMSTART BUF_RAMEND
|
||
|
|
.inc "basic/main.asm"
|
||
|
|
|
||
|
|
init:
|
||
|
|
di
|
||
|
|
; setup stack
|
||
|
|
ld sp, RAMEND
|
||
|
|
im 1
|
||
|
|
|
||
|
|
call aciaInit
|
||
|
|
ei
|
||
|
|
jp basStart
|
||
|
|
|
||
|
|
|