mirror of
https://github.com/hsoft/collapseos.git
synced 2024-11-17 08:38:05 +11:00
60 lines
1.0 KiB
NASM
60 lines
1.0 KiB
NASM
.equ RAMSTART 0x8000
|
|
.equ RAMEND 0xffff
|
|
.equ ACIA_CTL 0x80 ; Control and status. RS off.
|
|
.equ ACIA_IO 0x81 ; Transmit. RS on.
|
|
.equ KBD_PORT 0x08
|
|
|
|
jp init
|
|
|
|
.inc "err.h"
|
|
.inc "ascii.h"
|
|
.inc "core.asm"
|
|
.inc "str.asm"
|
|
.equ ACIA_RAMSTART RAMSTART
|
|
.inc "acia.asm"
|
|
|
|
.equ KBD_RAMSTART ACIA_RAMEND
|
|
.inc "kbd.asm"
|
|
|
|
.equ STDIO_RAMSTART KBD_RAMEND
|
|
.equ STDIO_GETC kbdGetC
|
|
.equ STDIO_PUTC aciaPutC
|
|
.inc "stdio.asm"
|
|
|
|
; *** BASIC ***
|
|
|
|
; RAM space used in different routines for short term processing.
|
|
.equ SCRATCHPAD_SIZE STDIO_BUFSIZE
|
|
.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
|
|
ld sp, RAMEND
|
|
im 1
|
|
|
|
call aciaInit
|
|
call kbdInit
|
|
call basInit
|
|
ei
|
|
jp basStart
|
|
|
|
KBD_FETCHKC:
|
|
in a, (KBD_PORT)
|
|
ret
|
|
|