mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-06-20 17:29:28 +00:00
d2_tiny: more optimization
This commit is contained in:
parent
fb6371eec6
commit
489fdb2ac9
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@ -52,7 +52,8 @@ D2: d2.o
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d2.o: d2.s \
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d2.o: d2.s \
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zp.inc hardware.inc \
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zp.inc hardware.inc \
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mA2E_2.s \
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mA2E_2.s \
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interrupt_handler.s mockingboard_setup.s
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interrupt_handler.s mockingboard_setup.s mockingboard_init.s \
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tracker_init.s
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ca65 -o d2.o d2.s -l d2.lst
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ca65 -o d2.o d2.s -l d2.lst
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####
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####
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@ -9,13 +9,15 @@
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; 466 bytes -- original from D2 demo
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; 466 bytes -- original from D2 demo
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; 436 bytes -- left channel only
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; 436 bytes -- left channel only
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; 427 bytes -- optimize init a bit
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; 427 bytes -- optimize init a bit
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; 426 bytes -- terminate init with $FF rather than extra $00
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; 424 bytes -- move inits to zero together
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; 414 bytes -- update ay output to write all registers
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d2:
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d2:
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;===================
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;===================
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; music Player Setup
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; music Player Setup
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lda #<peasant_song
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lda #<peasant_song
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sta SONG_L
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sta SONG_L
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lda #>peasant_song
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lda #>peasant_song
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@ -23,9 +25,13 @@ d2:
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; assume mockingboard in slot#4
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; assume mockingboard in slot#4
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; TODO: inline?
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; inline mockingboard_init
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jsr mockingboard_init
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.include "mockingboard_init.s"
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.include "tracker_init.s"
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; start the music playing
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cli
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cli
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@ -41,14 +47,13 @@ bob:
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its_over:
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its_over:
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sei
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sei
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lda #$3f
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lda #$3f
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ldx #7
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sta AY_REGS+7
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jsr ay3_write_reg
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jsr ay3_write_regs
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stuck_forever:
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stuck_forever:
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bne stuck_forever
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bne stuck_forever
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; music
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; music
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.include "mA2E_2.s"
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.include "mA2E_2.s"
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.include "interrupt_handler.s"
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.include "interrupt_handler.s"
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@ -19,7 +19,7 @@
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interrupt_handler:
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interrupt_handler:
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php ; save status flags
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php ; save status flags
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cld ; clear decimal mode
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cld ; clear decimal mode FIXME
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pha ; save A ; 3
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pha ; save A ; 3
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; A is saved in $45 by firmware
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; A is saved in $45 by firmware
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txa
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txa
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@ -90,10 +90,11 @@ note_only:
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tax
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tax
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lda frequency_lookup_low,X
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lda frequency_lookup_low,X
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sty y_smc+1
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sty y_smc+1 ; backup Y
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out_smc:
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out_smc:
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ldx #$00
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ldx #$00
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jsr ay3_write_reg ; trashes A/Y
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sta AY_REGS,X
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; jsr ay3_write_regs ; trashes A/Y
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; set coarse note A
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; set coarse note A
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; hack: if octave=0 (C2) then coarse=1
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; hack: if octave=0 (C2) then coarse=1
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@ -111,8 +112,8 @@ blah1:
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blah0:
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blah0:
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lda #0
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lda #0
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blah_blah:
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blah_blah:
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sta AY_REGS,X
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jsr ay3_write_reg ; trashes A/Y
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jsr ay3_write_regs ; trashes A/X/Y
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y_smc:
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y_smc:
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ldy #0
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ldy #0
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138
demos/l/d2/mockingboard_init.s
Normal file
138
demos/l/d2/mockingboard_init.s
Normal file
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@ -0,0 +1,138 @@
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; Mockingboad programming:
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; + Has two 6522 I/O chips connected to two AY-3-8910 chips
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; + Optionally has some speech chips controlled via the outport on the AY
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; + Often in slot 4
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; TODO: how to auto-detect?
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; References used:
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; http://macgui.com/usenet/?group=2&id=8366
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; 6522 Data Sheet
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; AY-3-8910 Data Sheet
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;========================
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; Mockingboard card
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; Essentially two 6522s hooked to the Apple II bus
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; Connected to AY-3-8910 chips
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; PA0-PA7 on 6522 connected to DA0-DA7 on AY
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; PB0 on 6522 connected to BC1
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; PB1 on 6522 connected to BDIR
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; PB2 on 6522 connected to RESET
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; left speaker
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MOCK_6522_ORB1 = $C400 ; 6522 #1 port b data
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MOCK_6522_ORA1 = $C401 ; 6522 #1 port a data
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MOCK_6522_DDRB1 = $C402 ; 6522 #1 data direction port B
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MOCK_6522_DDRA1 = $C403 ; 6522 #1 data direction port A
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MOCK_6522_T1CL = $C404 ; 6522 #1 t1 low order latches
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MOCK_6522_T1CH = $C405 ; 6522 #1 t1 high order counter
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MOCK_6522_T1LL = $C406 ; 6522 #1 t1 low order latches
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MOCK_6522_T1LH = $C407 ; 6522 #1 t1 high order latches
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MOCK_6522_T2CL = $C408 ; 6522 #1 t2 low order latches
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MOCK_6522_T2CH = $C409 ; 6522 #1 t2 high order counters
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MOCK_6522_SR = $C40A ; 6522 #1 shift register
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MOCK_6522_ACR = $C40B ; 6522 #1 auxilliary control register
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MOCK_6522_PCR = $C40C ; 6522 #1 peripheral control register
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MOCK_6522_IFR = $C40D ; 6522 #1 interrupt flag register
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MOCK_6522_IER = $C40E ; 6522 #1 interrupt enable register
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MOCK_6522_ORANH = $C40F ; 6522 #1 port a data no handshake
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; right speaker
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MOCK_6522_ORB2 = $C480 ; 6522 #2 port b data
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MOCK_6522_ORA2 = $C481 ; 6522 #2 port a data
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MOCK_6522_DDRB2 = $C482 ; 6522 #2 data direction port B
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MOCK_6522_DDRA2 = $C483 ; 6522 #2 data direction port A
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; AY-3-8910 commands on port B
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; RESET BDIR BC1
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MOCK_AY_RESET = $0 ; 0 0 0
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MOCK_AY_INACTIVE = $4 ; 1 0 0
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MOCK_AY_READ = $5 ; 1 0 1
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MOCK_AY_WRITE = $6 ; 1 1 0
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MOCK_AY_LATCH_ADDR = $7 ; 1 1 1
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;========================
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;========================
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; Mockingboard Init
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;========================
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;========================
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; Left channel only
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mockingboard_init:
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sei ; disable interrupts, is this necessary?
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;=========================
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; Setup Interrupt Handler
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;=========================
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; NOTE: we don't support IIc as it's a hack
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; traditionally Mockingboard on IIc was rare
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;========================
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; set up interrupt
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; Vector address goes to 0x3fe/0x3ff
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lda #<interrupt_handler
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sta $03fe
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lda #>interrupt_handler
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sta $03ff
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;=========================
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; Initialize the 6522s
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; Reset Left AY-3-8910
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;===========================
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; entries=10
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; 14 + 2*entries = 34 bytes
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; to beat = 46 bytes
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ldy #0
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init_it_loop:
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lda init_values,Y ; 3
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ldx init_addresses,Y ; 3
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bmi doneit ; 2
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iny ; 1
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sta $c400,X ; 3
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bne init_it_loop ; 2
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doneit:
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init_registers_to_zero:
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ldx #13
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lda #0
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sta SONG_OFFSET ; also init song stuff
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sta SONG_COUNTDOWN
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init_loop:
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sta AY_REGS,X
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dex
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bne init_loop
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jsr ay3_write_regs
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.if 0
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; 24 bytes + 13 bytes = 37 bytes
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init_loop:
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txa
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tay
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lda (SONG_L),Y
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jsr ay3_write_reg ; trashes Y
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dex
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bne init_loop
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; update SONG_L to point past the init
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lda SONG_L
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clc
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adc #14
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sta SONG_L
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bcc no_oflo
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inc SONG_H
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no_oflo:
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.endif
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@ -1,170 +1,20 @@
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; Mockingboad programming:
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; + Has two 6522 I/O chips connected to two AY-3-8910 chips
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; + Optionally has some speech chips controlled via the outport on the AY
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; + Often in slot 4
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; TODO: how to auto-detect?
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; References used:
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; http://macgui.com/usenet/?group=2&id=8366
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; 6522 Data Sheet
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; AY-3-8910 Data Sheet
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;========================
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; Mockingboard card
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; Essentially two 6522s hooked to the Apple II bus
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; Connected to AY-3-8910 chips
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; PA0-PA7 on 6522 connected to DA0-DA7 on AY
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; PB0 on 6522 connected to BC1
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; PB1 on 6522 connected to BDIR
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; PB2 on 6522 connected to RESET
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; left speaker
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MOCK_6522_ORB1 = $C400 ; 6522 #1 port b data
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MOCK_6522_ORA1 = $C401 ; 6522 #1 port a data
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MOCK_6522_DDRB1 = $C402 ; 6522 #1 data direction port B
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MOCK_6522_DDRA1 = $C403 ; 6522 #1 data direction port A
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MOCK_6522_T1CL = $C404 ; 6522 #1 t1 low order latches
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MOCK_6522_T1CH = $C405 ; 6522 #1 t1 high order counter
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MOCK_6522_T1LL = $C406 ; 6522 #1 t1 low order latches
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MOCK_6522_T1LH = $C407 ; 6522 #1 t1 high order latches
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MOCK_6522_T2CL = $C408 ; 6522 #1 t2 low order latches
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MOCK_6522_T2CH = $C409 ; 6522 #1 t2 high order counters
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MOCK_6522_SR = $C40A ; 6522 #1 shift register
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MOCK_6522_ACR = $C40B ; 6522 #1 auxilliary control register
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MOCK_6522_PCR = $C40C ; 6522 #1 peripheral control register
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MOCK_6522_IFR = $C40D ; 6522 #1 interrupt flag register
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MOCK_6522_IER = $C40E ; 6522 #1 interrupt enable register
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MOCK_6522_ORANH = $C40F ; 6522 #1 port a data no handshake
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; right speaker
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MOCK_6522_ORB2 = $C480 ; 6522 #2 port b data
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MOCK_6522_ORA2 = $C481 ; 6522 #2 port a data
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MOCK_6522_DDRB2 = $C482 ; 6522 #2 data direction port B
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MOCK_6522_DDRA2 = $C483 ; 6522 #2 data direction port A
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; AY-3-8910 commands on port B
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; RESET BDIR BC1
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MOCK_AY_RESET = $0 ; 0 0 0
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MOCK_AY_INACTIVE = $4 ; 1 0 0
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MOCK_AY_READ = $5 ; 1 0 1
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MOCK_AY_WRITE = $6 ; 1 1 0
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MOCK_AY_LATCH_ADDR = $7 ; 1 1 1
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;========================
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;========================
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; Mockingboard Init
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;========================
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;========================
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; Left channel only
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mockingboard_init:
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sei ; disable interrupts, is this necessary?
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;=========================
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; Setup Interrupt Handler
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;=========================
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; NOTE: we don't support IIc as it's a hack
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; traditionally Mockingboard on IIc was rare
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;========================
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; set up interrupt
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; Vector address goes to 0x3fe/0x3ff
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lda #<interrupt_handler
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sta $03fe
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lda #>interrupt_handler
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sta $03ff
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;=========================
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; Initialize the 6522s
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; Reset Left AY-3-8910
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;===========================
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; entries=10
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; 14 + 2*entries = 34 bytes
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; to beat = 46 bytes
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ldy #0
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init_it_loop:
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lda init_values,Y ; 3
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ldx init_addresses,Y ; 3
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bmi doneit ; 2
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iny ; 1
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sta $c400,X ; 3
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bne init_it_loop ; 2
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doneit:
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init_registers:
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; init song data
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lda #0
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sta SONG_OFFSET
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sta SONG_COUNTDOWN
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; read 14 bytes from beginning of song to init
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ldx #13
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init_loop:
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init_smc:
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txa
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tay
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lda (SONG_L),Y
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jsr ay3_write_reg ; trashes Y
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dex
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bne init_loop
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; update SONG_L to point past the init
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lda SONG_L
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clc
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adc #14
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sta SONG_L
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bcc no_oflo
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inc SONG_H
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no_oflo:
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; create Frequency Table
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ldx #11
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make_freq_loop:
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sec
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lda frequency_lookup_low,X
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ror
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sta frequency_lookup_low+16,X
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lsr
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sta frequency_lookup_low+32,X
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lsr
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sta frequency_lookup_low+48,X
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dex
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bpl make_freq_loop
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inx
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stx frequency_lookup_low+28
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rts
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;=====================
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;=====================
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;=====================
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;=====================
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||||||
;=====================
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;=====================
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; ay3 write reg
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; ay3 write regs
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;=====================
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;=====================
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;=====================
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;=====================
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;=====================
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;=====================
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||||||
; writes to one chip
|
; write all 13 registers
|
||||||
; address in X
|
; address in X
|
||||||
; data in A
|
; data in A
|
||||||
|
|
||||||
ay3_write_reg:
|
ay3_write_regs:
|
||||||
pha
|
|
||||||
|
ldx #13
|
||||||
|
ay3_write_reg_loop:
|
||||||
|
|
||||||
lda #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
|
lda #MOCK_AY_LATCH_ADDR ; latch_address for PB1 ; 2
|
||||||
ldy #MOCK_AY_INACTIVE ; go inactive ; 2
|
ldy #MOCK_AY_INACTIVE ; go inactive ; 2
|
||||||
|
|
||||||
|
@ -172,14 +22,16 @@ ay3_write_reg:
|
||||||
sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
|
sta MOCK_6522_ORB1 ; latch_address on PB1 ; 4
|
||||||
sty MOCK_6522_ORB1 ; 4
|
sty MOCK_6522_ORB1 ; 4
|
||||||
|
|
||||||
pla
|
|
||||||
|
|
||||||
; value
|
; value
|
||||||
|
lda $70,X
|
||||||
sta MOCK_6522_ORA1 ; put value on PA1 ; 4
|
sta MOCK_6522_ORA1 ; put value on PA1 ; 4
|
||||||
lda #MOCK_AY_WRITE ; ; 2
|
lda #MOCK_AY_WRITE ; ; 2
|
||||||
sta MOCK_6522_ORB1 ; write on PB1 ; 4
|
sta MOCK_6522_ORB1 ; write on PB1 ; 4
|
||||||
sty MOCK_6522_ORB1 ; 4
|
sty MOCK_6522_ORB1 ; 4
|
||||||
|
|
||||||
|
dex
|
||||||
|
bpl ay3_write_reg_loop
|
||||||
|
|
||||||
rts
|
rts
|
||||||
|
|
||||||
|
|
||||||
|
|
|
@ -292,11 +292,11 @@ int main(int argc, char **argv) {
|
||||||
|
|
||||||
printf("peasant_song:\n");
|
printf("peasant_song:\n");
|
||||||
printf("; register init\n");
|
printf("; register init\n");
|
||||||
printf("\t.byte $00,$00,$00,$00,$00,$00 ; $00: A/B/C fine/coarse\n");
|
//printf("\t.byte $00,$00,$00,$00,$00,$00 ; $00: A/B/C fine/coarse\n");
|
||||||
printf("\t.byte $00 ; $06\n");
|
//printf("\t.byte $00 ; $06\n");
|
||||||
printf("\t.byte $38 ; $07 mixer (ABC on)\n");
|
//printf("\t.byte $38 ; $07 mixer (ABC on)\n");
|
||||||
printf("\t.byte $0E,$0C,$0C ; $08 volume A/B/C\n");
|
//printf("\t.byte $0E,$0C,$0C ; $08 volume A/B/C\n");
|
||||||
printf("\t.byte $00,$00,$00,$00 ; $09\n");
|
//printf("\t.byte $00,$00,$00,$00 ; $09\n");
|
||||||
printf("\n");
|
printf("\n");
|
||||||
|
|
||||||
while(1) {
|
while(1) {
|
||||||
|
|
30
demos/l/d2/tracker_init.s
Normal file
30
demos/l/d2/tracker_init.s
Normal file
|
@ -0,0 +1,30 @@
|
||||||
|
|
||||||
|
tracker_init:
|
||||||
|
|
||||||
|
; create Frequency Table
|
||||||
|
ldx #11
|
||||||
|
make_freq_loop:
|
||||||
|
sec
|
||||||
|
lda frequency_lookup_low,X
|
||||||
|
ror
|
||||||
|
sta frequency_lookup_low+16,X
|
||||||
|
lsr
|
||||||
|
sta frequency_lookup_low+32,X
|
||||||
|
lsr
|
||||||
|
sta frequency_lookup_low+48,X
|
||||||
|
|
||||||
|
dex
|
||||||
|
bpl make_freq_loop
|
||||||
|
|
||||||
|
inx
|
||||||
|
stx frequency_lookup_low+28
|
||||||
|
|
||||||
|
; setup initial ay-3-8910 values (this depends on song)
|
||||||
|
|
||||||
|
lda #$38
|
||||||
|
sta AY_REGS+7 ; $07 mixer (ABC on)
|
||||||
|
lda #$0E
|
||||||
|
sta AY_REGS+8 ; $08 volume A
|
||||||
|
lda #$0C
|
||||||
|
sta AY_REGS+9 ; $09 volume B
|
||||||
|
sta AY_REGS+10 ; $0A volume C
|
|
@ -9,10 +9,12 @@ GBASH = $27
|
||||||
BASL = $28
|
BASL = $28
|
||||||
BASH = $29
|
BASH = $29
|
||||||
|
|
||||||
SONG_L = $70
|
AY_REGS = $70
|
||||||
SONG_H = $71
|
|
||||||
SONG_OFFSET = $72
|
SONG_L = $80
|
||||||
SONG_COUNTDOWN = $73
|
SONG_H = $81
|
||||||
|
SONG_OFFSET = $82
|
||||||
|
SONG_COUNTDOWN = $83
|
||||||
|
|
||||||
OUR_ROT = $A5
|
OUR_ROT = $A5
|
||||||
|
|
||||||
|
|
Loading…
Reference in New Issue
Block a user