collapseos/recipes/sms/kbd/glue.asm
Virgil Dupras f4b6c7637d zasm: rename #inc to .inc
scas, it's not needed any more.
2019-10-06 14:32:23 -04:00

58 lines
916 B
NASM

; 8K of onboard RAM
.equ RAMSTART 0xc000
; Memory register at the end of RAM. Must not overwrite
.equ RAMEND 0xddd0
jp init
.fill 0x66-$
retn
.inc "err.h"
.inc "core.asm"
.inc "parse.asm"
.inc "sms/kbd.asm"
.equ KBD_RAMSTART RAMSTART
.equ KBD_FETCHKC smskbdFetchKCB
.inc "kbd.asm"
.equ VDP_RAMSTART KBD_RAMEND
.inc "sms/vdp.asm"
.equ STDIO_RAMSTART VDP_RAMEND
.inc "stdio.asm"
.equ SHELL_RAMSTART STDIO_RAMEND
.equ SHELL_EXTRA_CMD_COUNT 0
.inc "shell.asm"
init:
di
im 1
ld sp, RAMEND
; Initialize the keyboard latch by "dummy reading" once. This ensures
; that the adapter knows it can fill its '164.
; Port B TH output, high
ld a, 0b11110111
out (0x3f), a
nop
; Port A/B reset
ld a, 0xff
out (0x3f), a
call kbdInit
call vdpInit
ld hl, kbdGetC
ld de, vdpPutC
call stdioInit
call shellInit
jp shellLoop
.fill 0x7ff0-$
.db "TMR SEGA", 0x00, 0x00, 0xfb, 0x68, 0x00, 0x00, 0x00, 0x4c