chiptune: move chunksize to 3
also abandon hope of getting starfield background; needs 3kB of RAM that we can't afford
This commit is contained in:
Vince Weaver
parent
bb5f5c3aec
commit
1f63b498a2
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@ -2,16 +2,18 @@
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; "Beneath Apple DOS" by Don Worth and Pieter Lechner
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; FIXME: make these a parameter
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; filename
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disk_buff EQU $6000
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read_size EQU $2A00 ; (3*256*14)
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;; For the disk-read code
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;RWTSH EQU $F1
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;RWTSL EQU $F0
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;DOSBUFH EQU $EF
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;DOSBUFL EQU $EE
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;FILEMH EQU $ED
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;FILEML EQU $EC
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;RWTSL EQU $F0
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;RWTSH EQU $F1
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;DOSBUFL EQU $EE
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;DOSBUFH EQU $EF
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;FILEML EQU $EC
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;FILEMH EQU $ED
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;; DOS Constants
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OPEN EQU $01
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@ -221,10 +223,10 @@ dos33_read:
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sta (FILEML),y
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ldy #6 ; point to number of bytes to read
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lda #>read_size
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lda #<read_size
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sta (FILEML),y ; we want to read 255 bytes
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iny
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lda #<read_size
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lda #>read_size
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sta (FILEML),y
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ldy #8 ; buffer address
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@ -7,7 +7,8 @@ all: chiptune_player.dsk
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chiptune_player.dsk: CHIPTUNE_PLAYER OUT.0
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$(DOS33) -y chiptune_player.dsk BSAVE -a 0x1000 CHIPTUNE_PLAYER
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$(DOS33) -y chiptune_player.dsk BSAVE -a 0x6000 OUT.0
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$(DOS33) -y chiptune_player.dsk SAVE B OUT.0
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# $(DOS33) -y chiptune_player.dsk BSAVE -a 0x6000 OUT.0
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CHIPTUNE_PLAYER: chiptune_player.o
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Binary file not shown.
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@ -1,5 +1,4 @@
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+ Load from disk
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+ Starfield
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+ Starfield -- takes too much ram (3k+)
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+ Volume Bars
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+ Print Descriptive Text
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+ Print time
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@ -5,21 +5,23 @@
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CHUNK_BUFFER EQU $6000
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;=============================
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; Print message
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; Setup
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;=============================
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jsr HOME
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jsr TEXT
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; init variables
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lda #0
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sta DRAW_PAGE
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sta CH
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sta CV
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sta DONE_PLAYING
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sta XPOS
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lda #0
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sta MB_FRAME_DIFF
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; print detection message
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lda #<mocking_message ; load loading message
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sta OUTL
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lda #>mocking_message
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@ -40,12 +42,12 @@ CHUNK_BUFFER EQU $6000
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jmp forever_loop ; and wait forever
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mockingboard_found:
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lda #<found_message ; print found message
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sta OUTL
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lda #>found_message
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sta OUTH
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inc CV
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jsr move_and_print
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; lda #<found_message ; print found message
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; sta OUTL
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; lda #>found_message
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; sta OUTH
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; inc CV
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; jsr move_and_print
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;============================
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; Init the Mockingboard
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@ -55,7 +57,6 @@ mockingboard_found:
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jsr reset_ay_both
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jsr clear_ay_both
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;=========================
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; Setup Interrupt Handler
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;=========================
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@ -71,7 +72,7 @@ mockingboard_found:
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; Enable 50Hz clock on 6522
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;============================
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lda #$40 ; Generate continuous interrupts, don't touch PB7
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lda #$40 ; Continuous interrupts, don't touch PB7
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sta $C40B ; ACR register
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lda #$7F ; clear all interrupt flags
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sta $C40E ; IER register (interrupt enable)
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@ -91,7 +92,7 @@ mockingboard_found:
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;============================
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; Setup Graphics
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; Draw title screen
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;============================
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jsr set_gr_page0
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@ -124,6 +125,7 @@ mockingboard_found:
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sta INH
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lda #<CHUNK_BUFFER
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sta INL
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lda #$0
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sta MB_CHUNK
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@ -131,16 +133,35 @@ mockingboard_found:
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;============================
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; Enable 6502 interrupts
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;============================
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;
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cli ; clear interrupt mask
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;============================
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; Init Background
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;============================
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; jsr clear_screens ; clear top/bottom of page 0/1
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; jsr set_gr_page0
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; lda #0
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; sta DRAW_PAGE
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; sta RANDOM_POINTER
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; sta SCREEN_Y
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; always multiply with low byte as zero
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; sta NUM2L
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;============================
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; Loop forever
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;============================
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playing_loop:
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;============================
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; starfield
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;============================
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; jsr starfield
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lda DONE_PLAYING
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beq playing_loop
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@ -204,7 +225,7 @@ mb_not_13:
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; so write same to both left/write
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clc
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lda INH
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adc #$4
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adc #$3
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sta INH
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inx
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@ -223,7 +244,7 @@ wraparound:
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inc MB_CHUNK
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lda MB_CHUNK
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cmp #$4
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cmp #$3
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bne chunk_good
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lda #0
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sta MB_CHUNK
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@ -243,7 +264,6 @@ done_interrupt:
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.include "../asm_routines/gr_offsets.s"
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.include "../asm_routines/text_print.s"
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.include "../asm_routines/mockingboard_a.s"
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;.include "../asm_routines/lzss_decompress.s"
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.include "../asm_routines/gr_fast_clear.s"
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.include "../asm_routines/pageflip.s"
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.include "../asm_routines/gr_unrle.s"
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@ -2,26 +2,25 @@
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;; Zero page monitor routines addresses
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;WNDLFT EQU $20
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;WNDWDTH EQU $21
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;WNDTOP EQU $22
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;WNDBTM EQU $23
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CH EQU $24
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CV EQU $25
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GBASL EQU $26
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GBASH EQU $27
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BASL EQU $28
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BASH EQU $29
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;H2 EQU $2C
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;V2 EQU $2D
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;MASK EQU $2E
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COLOR EQU $30
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;INVFLG EQU $32
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;WNDLFT EQU $20
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;WNDWDTH EQU $21
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;WNDTOP EQU $22
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;WNDBTM EQU $23
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CH EQU $24
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CV EQU $25
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GBASL EQU $26
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GBASH EQU $27
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BASL EQU $28
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BASH EQU $29
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;H2 EQU $2C
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;V2 EQU $2D
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MASK EQU $2E
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COLOR EQU $30
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;INVFLG EQU $32
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; dos33 zero page = 26-2f, 35-38, 3e 3f 40-4d
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; overlap applesoft 67-6a,6f,70,af,b0,ca-cd,d8
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RWTSL EQU $60
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RWTSH EQU $61
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DOSBUFL EQU $62
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@ -30,11 +29,9 @@ FILEML EQU $64
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FILEMH EQU $65
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;TURNING EQU $60
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;SCREEN_X EQU $61 ; not used?
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;SCREEN_Y EQU $62
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;TURNING EQU $60
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;SCREEN_X EQU $61 ; not used?
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SCREEN_Y EQU $62
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;ANGLE EQU $63
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;HORIZ_SCALE_I EQU $64
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;HORIZ_SCALE_F EQU $65
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@ -48,6 +45,8 @@ FILEMH EQU $65
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;CX_F EQU $6D
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;DY_I EQU $6E
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;DY_F EQU $6F
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;SPACEY_I EQU $70
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;SPACEY_F EQU $71
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;CY_I EQU $72
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@ -61,29 +60,29 @@ FILEMH EQU $65
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;DRAW_SPLASH EQU $7A
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;SPEED EQU $7B
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;SPLASH_COUNT EQU $7C
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;OVER_LAND EQU $7D
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;NUM1L EQU $7E
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;NUM1H EQU $7F
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;NUM2L EQU $80
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;NUM2H EQU $81
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;RESULT EQU $82 ; 83,84,85
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;OVER_LAND EQU $7D
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NUM1L EQU $7E
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NUM1H EQU $7F
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NUM2L EQU $80
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NUM2H EQU $81
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RESULT EQU $82 ; 83,84,85
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;NEGATE EQU $86 ; UNUSED?
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;LAST_SPACEX_I EQU $87
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;LAST_SPACEY_I EQU $88
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;LAST_MAP_COLOR EQU $89
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;DRAW_SKY EQU $8A
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;COLOR_MASK EQU $8B
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COLOR_MASK EQU $8B
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;KEY_COUNT EQU $8C
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;KEY_OFFSET EQU $8D
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;DRAW_BLUE_SKY EQU $8E
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;RANDOM_POINTER EQU $8F
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;FRAME_COUNT EQU $90
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MB_VALUE EQU $91
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MB_CHUNK EQU $92
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MB_ADDRL EQU $91
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MB_ADDRH EQU $92
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DONE_PLAYING EQU $93
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MB_FRAME_DIFF EQU $94
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RANDOM_POINTER EQU $8F
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FRAME_COUNT EQU $90
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MB_VALUE EQU $91
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MB_CHUNK EQU $92
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MB_ADDRL EQU $91
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MB_ADDRH EQU $92
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DONE_PLAYING EQU $93
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MB_FRAME_DIFF EQU $94
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;LZSS_RL EQU $95
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;LZSS_RH EQU $96
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;LZSS_COUNT EQU $97
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@ -95,10 +94,10 @@ MB_FRAME_DIFF EQU $94
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; More zero-page addresses
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; we try not to conflict with anything DOS, MONITOR or BASIC related
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;COLOR1 EQU $E0
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;COLOR2 EQU $E1
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;MATCH EQU $E2
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;XX EQU $E3
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;COLOR1 EQU $E0
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;COLOR2 EQU $E1
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;MATCH EQU $E2
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XX EQU $E3
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;YY EQU $E4
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;SHIPY EQU $E4
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;YADD EQU $E5
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@ -107,24 +106,24 @@ MB_FRAME_DIFF EQU $94
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;MEMPTRH EQU $E8
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;NAMEL EQU $E9
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;NAMEH EQU $EA
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;NAMEX EQU $EB
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;CHAR EQU $EC
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DISP_PAGE EQU $ED
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DRAW_PAGE EQU $EE
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;NAMEX EQU $EB
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;CHAR EQU $EC
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DISP_PAGE EQU $ED
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DRAW_PAGE EQU $EE
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;FIRST EQU $F0
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;LASTKEY EQU $F1
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;PADDLE_STATUS EQU $F2
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XPOS EQU $F3
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;YPOS EQU $F4
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TEMP EQU $FA
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;RUN EQU $FA
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;TEMP2 EQU $FB
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;TEMPY EQU $FB
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INL EQU $FC
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INH EQU $FD
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OUTL EQU $FE
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OUTH EQU $FF
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;FIRST EQU $F0
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;LASTKEY EQU $F1
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;PADDLE_STATUS EQU $F2
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XPOS EQU $F3
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YPOS EQU $F4
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TEMP EQU $FA
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;RUN EQU $FA
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;TEMP2 EQU $FB
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;TEMPY EQU $FB
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INL EQU $FC
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INH EQU $FD
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OUTL EQU $FE
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OUTH EQU $FF
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