mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-07-03 16:29:56 +00:00
73d9b710c7
This will be less optimized than pt3_player but possibly easier for other programs to use.
185 lines
3.6 KiB
ArmAsm
185 lines
3.6 KiB
ArmAsm
;=================
|
|
; VMW PT3_LIB test
|
|
;=================
|
|
; template for using the pt3_lib
|
|
|
|
|
|
; zero page definitions
|
|
.include "zp.inc"
|
|
|
|
; Location the files load at.
|
|
; If you change this, you need to update the Makefile
|
|
|
|
PT3_LOC = song
|
|
|
|
|
|
;=============================
|
|
; Setup
|
|
;=============================
|
|
pt3_setup:
|
|
jsr HOME
|
|
jsr TEXT
|
|
|
|
;===========================
|
|
; Check for Apple II/II+/IIc
|
|
;===========================
|
|
; this is used to see if we have lowecase support
|
|
|
|
lda $FBB3 ; IIe and newer is $06
|
|
cmp #6
|
|
beq apple_iie
|
|
|
|
lda #1 ; set if older than a IIe
|
|
sta apple_ii
|
|
apple_iie:
|
|
|
|
;===============
|
|
; init variables
|
|
;===============
|
|
|
|
lda #0
|
|
sta DONE_PLAYING
|
|
sta LOOP
|
|
|
|
;=======================
|
|
; Detect mockingboard
|
|
;========================
|
|
|
|
; Note, we do this, but then ignore it, as sometimes
|
|
; the test fails and then you don't get music.
|
|
; In theory this could do bad things if you had something
|
|
; easily confused in slot4, but that's probably not an issue.
|
|
|
|
; print detection message
|
|
|
|
; lda #<mocking_message ; load loading message
|
|
; sta OUTL
|
|
; lda #>mocking_message
|
|
; sta OUTH
|
|
; jsr move_and_print ; print it
|
|
|
|
jsr mockingboard_detect_slot4 ; call detection routine
|
|
cpx #$1
|
|
beq mockingboard_found
|
|
|
|
; lda #<not_message ; if not found, print that
|
|
; sta OUTL
|
|
; lda #>not_message
|
|
; sta OUTH
|
|
; inc CV
|
|
; jsr move_and_print
|
|
|
|
; jmp forever_loop ; and wait forever
|
|
|
|
mockingboard_found:
|
|
; lda #<found_message ; print found message
|
|
; sta OUTL
|
|
; lda #>found_message
|
|
; sta OUTH
|
|
; inc CV
|
|
; jsr move_and_print
|
|
|
|
;============================
|
|
; Init the Mockingboard
|
|
;============================
|
|
|
|
jsr mockingboard_init
|
|
jsr reset_ay_both
|
|
jsr clear_ay_both
|
|
|
|
;=========================
|
|
; Setup Interrupt Handler
|
|
;=========================
|
|
; Vector address goes to 0x3fe/0x3ff
|
|
; FIXME: should chain any existing handler
|
|
|
|
lda #<interrupt_handler
|
|
sta $03fe
|
|
lda #>interrupt_handler
|
|
sta $03ff
|
|
|
|
;============================
|
|
; Enable 50Hz clock on 6522
|
|
;============================
|
|
|
|
sei ; disable interrupts just in case
|
|
|
|
lda #$40 ; Continuous interrupts, don't touch PB7
|
|
sta $C40B ; ACR register
|
|
lda #$7F ; clear all interrupt flags
|
|
sta $C40E ; IER register (interrupt enable)
|
|
|
|
lda #$C0
|
|
sta $C40D ; IFR: 1100, enable interrupt on timer one oflow
|
|
sta $C40E ; IER: 1100, enable timer one interrupt
|
|
|
|
lda #$E7
|
|
sta $C404 ; write into low-order latch
|
|
lda #$4f
|
|
sta $C405 ; write into high-order latch,
|
|
; load both values into counter
|
|
; clear interrupt and start counting
|
|
|
|
; 4fe7 / 1e6 = .020s, 50Hz
|
|
|
|
|
|
;==================
|
|
; init song
|
|
;==================
|
|
|
|
jsr pt3_init_song
|
|
|
|
;============================
|
|
; Enable 6502 interrupts
|
|
;============================
|
|
start_interrupts:
|
|
cli ; clear interrupt mask
|
|
|
|
|
|
;============================
|
|
; Loop forever
|
|
;============================
|
|
main_loop:
|
|
|
|
jmp main_loop
|
|
|
|
|
|
;==============================-=========
|
|
;========================================
|
|
|
|
; Helper routines below
|
|
|
|
;========================================
|
|
;========================================
|
|
|
|
;=========
|
|
; vars
|
|
;=========
|
|
|
|
time_frame: .byte $0
|
|
apple_ii: .byte $0
|
|
|
|
;=========
|
|
;routines
|
|
;=========
|
|
.include "mockingboard_a.s"
|
|
.include "interrupt_handler.s"
|
|
.include "pt3_lib.s"
|
|
|
|
;=========
|
|
; strings
|
|
;=========
|
|
;mocking_message: .asciiz "LOOKING FOR MOCKINGBOARD IN SLOT #4"
|
|
not_message: .byte "NOT "
|
|
found_message: .asciiz "FOUND"
|
|
;done_message: .asciiz "DONE PLAYING"
|
|
|
|
;=============
|
|
; include song
|
|
;=============
|
|
.align 256 ; must be on page boundary
|
|
; this can be fixed but some changes would have
|
|
; to be made throughout the player code
|
|
song:
|
|
.incbin "../pt3_player/music/EA.PT3"
|