306 lines
5.8 KiB
ArmAsm
306 lines
5.8 KiB
ArmAsm
;=================
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; VMW PT3_LIB test
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;=================
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; template for using the pt3_lib
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; zero page definitions
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.include "zp.inc"
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; some firmware locations
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.include "hardware.inc"
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; Location the files load at.
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; If you change this, you need to update the Makefile
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PT3_LOC = song
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PT3_LOC_2 = song2
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; the below will make for more compact code, at the expense
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; of using $80 - $ff zero page addresses by the decoder.
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; PT3_USE_ZERO_PAGE = 1
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; Comment this to disable Apple IIc support which will free a small amount
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; of room
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PT3_ENABLE_APPLE_IIC = 1
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; Enable ROM copying on IIc
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;PT3_ENABLE_IIC_COPY_ROM = 1
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; The Vortex Tracker by default generates Atari-ST style pt3 files
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; which assume there is a 1.77MHz clock frequency driving
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; the AY-3-8910. Apple II Mockingboards run at 1MHz, so unless
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; you convert the frequency the music will sound pitched lower.
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; The 1.77MHz frequency conversion code can be in three states:
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; Enabled (always convert)
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; PT3_DISABLE_FREQ_CONVERSION commented out
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; PT3_DISABLE_SWITCHABLE_FREQ_CONVERSION = 1
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; Disabled (don't convert)
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; PT3_DISABLE_FREQ_CONVERSION = 1
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; PT3_DISABLE_SWITCHABLE_FREQ_CONVERSION = 1
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; Switchable (can disable/enable on the fly)
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; this is the default for historical reasons
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; PT3_DISABLE_FREQ_CONVERSION commented out
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; PT3_DISABLE_SWITCHABLE_FREQ_CONVERSION commented out
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; PT3_DISABLE_FREQ_CONVERSION = 1
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; PT3_DISABLE_SWITCHABLE_FREQ_CONVERSION = 1
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;=============================
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; Setup
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;=============================
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pt3_setup:
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jsr HOME
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jsr TEXT
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;===============
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; init variables
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;===============
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lda #0
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sta DONE_PLAYING
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lda #1 ; change to 0 to not loop
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sta LOOP
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sta LOOP_2
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;=======================
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; Detect Apple II Model
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;========================
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; IRQ setup is different on IIc
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; You can possibly skip this if you only care about II+/IIe
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.ifdef PT3_ENABLE_APPLE_IIC
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jsr detect_appleii_model
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.endif
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;=======================
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; Detect mockingboard
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;========================
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jsr print_mockingboard_detect ; print message
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jsr mockingboard_detect ; call detection routine
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bcs mockingboard_found
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jsr print_mocking_notfound
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; possibly can't detect on IIc so just try with slot#4 anyway
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; even if not detected
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jmp setup_interrupt
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mockingboard_found:
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; print found message
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; modify message to print slot value
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lda MB_ADDR_H
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sec
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sbc #$10
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sta found_message+11
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jsr print_mocking_found
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jsr print_artist_message
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;==================================================
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; patch the playing code with the proper slot value
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;==================================================
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jsr mockingboard_patch
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setup_interrupt:
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;=======================
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; Set up 50Hz interrupt
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;========================
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jsr mockingboard_init
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jsr mockingboard_setup_interrupt
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;============================
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; Init the Mockingboard
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;============================
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jsr reset_ay_both
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jsr clear_ay_both
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;==================
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; init song
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;==================
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jsr pt3_init_song
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;============================
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; Enable 6502 interrupts
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;============================
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jsr pt3_toggle_freq_conversion
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jsr pt3_toggle_freq_conversion_2
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start_interrupts:
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cli ; clear interrupt mask
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;============================
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; Loop forever
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;============================
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bit SET_GR
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bit LORES
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bit TEXTGR
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bit PAGE1
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forever_loop:
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jsr visualization
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jmp forever_loop
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;========================================
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;========================================
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; Helper routines below
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;========================================
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;========================================
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;==================================
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; Print mockingboard detect message
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;==================================
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; note: on IIc must do this before enabling interrupt
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; as we disable ROM (COUT won't work?)
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print_mockingboard_detect:
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lda APPLEII_MODEL
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sta apple_message+17
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; print detection message for Apple II type
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ldy #0
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print_apple_message:
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lda apple_message,Y ; load loading message
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beq done_apple_message
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ora #$80
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jsr COUT
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iny
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jmp print_apple_message
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done_apple_message:
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jsr CROUT1
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; print detection message
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ldy #0
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print_mocking_message:
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lda mocking_message,Y ; load loading message
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beq done_mocking_message
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ora #$80
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jsr COUT
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iny
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jmp print_mocking_message
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done_mocking_message:
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jsr CROUT1
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rts
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print_mocking_notfound:
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ldy #0
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print_not_message:
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lda not_message,Y ; load loading message
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beq print_not_message_done
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ora #$80
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jsr COUT
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iny
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jmp print_not_message
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print_not_message_done:
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rts
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print_mocking_found:
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ldy #0
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print_found_message:
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lda found_message,Y ; load loading message
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beq done_found_message
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ora #$80
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jsr COUT
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iny
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jmp print_found_message
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done_found_message:
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rts
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print_artist_message:
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jsr CROUT1
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ldy #0
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print_artist_message_loop:
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lda artist_message,Y ; load loading message
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beq done_artist_message
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ora #$80
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jsr COUT
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iny
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jmp print_artist_message_loop
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done_artist_message:
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rts
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;=========
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; strings
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;=========
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apple_message: .asciiz "DETECTED APPLE II "
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mocking_message: .asciiz "LOOKING FOR MOCKINGBOARD: "
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not_message: .byte "NOT "
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found_message: .asciiz "FOUND SLOT#4"
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artist_message: .asciiz "PLAYING: 'DANCE OF THE DEAD' BY DYA"
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;=========
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; vars
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;=========
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;=========
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;routines
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;=========
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.ifdef PT3_ENABLE_APPLE_IIC
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.include "pt3_lib_detect_model.s"
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.endif
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.include "pt3_lib_common.s"
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.include "pt3_lib_core.s"
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.include "pt3_lib_core2.s"
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.include "pt3_lib_init.s"
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.include "pt3_lib_mockingboard_setup.s"
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.include "interrupt_handler.s"
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; if you're self patching, detect has to be after interrupt_handler.s
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.include "pt3_lib_mockingboard_detect.s"
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.include "visual.s"
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;=============
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; include song
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;=============
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.align 256 ; must be on page boundary
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; this can be fixed but some changes would have
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; to be made throughout the player code
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song:
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.incbin "music/dya_dance_1.pt3"
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;.incbin "../pt3_player/music/EA.PT3"
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.align 256
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song2:
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.incbin "music/dya_dance_2.pt3"
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;.incbin "../pt3_player/music/EA.PT3"
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