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recipes/sms: plug shell in!

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Now this is getting eminently exciting!
This commit is contained in:
Virgil Dupras 2019-07-02 11:14:30 -04:00
parent 404dbd0ddd
commit bd003829e8
1 changed files with 37 additions and 16 deletions
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53
recipes/sms/glue.asm
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@ -8,58 +8,79 @@
.fill 0x66-$ .fill 0x66-$
retn retn
#include "err.h"
#include "core.asm"
#include "parse.asm"
.equ PAD_RAMSTART RAMSTART .equ PAD_RAMSTART RAMSTART
#include "sms/pad.asm" #include "sms/pad.asm"
.equ VDP_RAMSTART PAD_RAMEND .equ VDP_RAMSTART PAD_RAMEND
#include "sms/vdp.asm" #include "sms/vdp.asm"
.equ STDIO_RAMSTART VDP_RAMEND
#include "stdio.asm"
.equ SHELL_RAMSTART STDIO_RAMEND
.equ SHELL_EXTRA_CMD_COUNT 0
#include "shell.asm"
init: init:
di di
im 1 im 1
ld sp, RAMEND ld sp, RAMEND
call padInit
call vdpInit call vdpInit
ld hl, myGetC
ld de, vdpPutC
call stdioInit
call shellInit
jp shellLoop
mainloop: myGetC:
; What we do here is simple. We go though all bits of port A controller ; What we do here is simple. We go though all bits of port A controller
; increasing B each time. As soon as we get a hit, we display that ; increasing B each time. As soon as we get a hit, we display that
; letter. Pressed buttons go low. ; letter. Pressed buttons go low.
call padStatusA call padStatusA
jr z, mainloop ; unchanged since last poll push bc
jr z, .nothing ; unchanged since last poll
ld b, 'A' ld b, 'A'
bit 5, a ; Port A Button C pressed bit 5, a ; Port A Button C pressed
jr z, updateLetter jr z, .something
inc b ; b inc b ; b
bit 4, a ; Port A Button B pressed bit 4, a ; Port A Button B pressed
jr z, updateLetter jr z, .something
inc b ; c inc b ; c
bit 3, a ; Port A Right pressed bit 3, a ; Port A Right pressed
jr z, updateLetter jr z, .something
inc b ; d inc b ; d
bit 2, a ; Port A Left pressed bit 2, a ; Port A Left pressed
jr z, updateLetter jr z, .something
inc b ; e inc b ; e
bit 1, a ; Port A Down pressed bit 1, a ; Port A Down pressed
jr z, updateLetter jr z, .something
inc b ; f inc b ; f
bit 0, a ; Port A Up pressed bit 0, a ; Port A Up pressed
jr z, updateLetter jr z, .something
inc b ; g inc b ; g
bit 6, a ; Port A Button A pressed bit 6, a ; Port A Button A pressed
jr z, updateLetter jr z, .something
inc b ; h inc b ; h
bit 7, a ; Port A Start pressed bit 7, a ; Port A Start pressed
jr z, updateLetter ; when start is pressed, print all letters jr z, .something
jr mainloop ; nothing
.nothing:
; Prints letter in B pop bc
updateLetter: xor a
jp unsetZ
.something:
ld a, b ld a, b
call vdpPutC pop bc
jr mainloop cp a ; ensure Z
ret
.fill 0x7ff0-$ .fill 0x7ff0-$
.db "TMR SEGA", 0x00, 0x00, 0xfb, 0x68, 0x00, 0x00, 0x00, 0x4c .db "TMR SEGA", 0x00, 0x00, 0xfb, 0x68, 0x00, 0x00, 0x00, 0x4c