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chiptune: read data from disk

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This commit is contained in:
Vince Weaver 2018-02-17 22:45:17 -05:00
parent 74e9595312
commit bb5f5c3aec
4 changed files with 153 additions and 130 deletions
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19
asm_routines/dos33_routines.s
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@ -1,16 +1,17 @@
; File I/O routines based on sample code in
; "Beneath Apple DOS" by Don Worth and Pieter Lechner
; FIXME: make this a parameter
; FIXME: make these a parameter
disk_buff EQU $6000
read_size EQU $2A00 ; (3*256*14)
;; For the disk-read code
RWTSH EQU $F1
RWTSL EQU $F0
DOSBUFH EQU $EF
DOSBUFL EQU $EE
FILEMH EQU $ED
FILEML EQU $EC
;RWTSH EQU $F1
;RWTSL EQU $F0
;DOSBUFH EQU $EF
;DOSBUFL EQU $EE
;FILEMH EQU $ED
;FILEML EQU $EC
;; DOS Constants
OPEN EQU $01
@ -220,10 +221,10 @@ dos33_read:
sta (FILEML),y
ldy #6 ; point to number of bytes to read
lda #$00
lda #>read_size
sta (FILEML),y ; we want to read 255 bytes
iny
lda #$2a
lda #<read_size
sta (FILEML),y
ldy #8 ; buffer address

4
chiptune_player/Makefile
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@ -15,8 +15,8 @@ CHIPTUNE_PLAYER: chiptune_player.o
chiptune_player.o: chiptune_player.s \
../asm_routines/mockingboard.s \
../asm_routines/lzss_decompress.s \
chip_title.inc
../asm_routines/dos33_routines.s \
chip_title.inc zp.inc
ca65 -o chiptune_player.o chiptune_player.s -l chiptune_player.lst
clean:

42
chiptune_player/chiptune_player.s
View File

@ -55,16 +55,6 @@ mockingboard_found:
jsr reset_ay_both
jsr clear_ay_both
;===========================
; init pointer to the music
;===========================
lda #>CHUNK_BUFFER
sta INH
lda #<CHUNK_BUFFER
sta INL
lda #$0
sta MB_CHUNK
;=========================
; Setup Interrupt Handler
@ -99,12 +89,6 @@ mockingboard_found:
; 4fe7 / 1e6 = .020s, 50Hz
;============================
; Enable 6502 interrupts
;============================
;
cli ; clear interrupt mask
;============================
; Setup Graphics
@ -122,7 +106,7 @@ mockingboard_found:
lda #>chip_title
sta GBASH
; Load offscreen
; Load image
lda #<$400
sta BASL
lda #>$400
@ -130,6 +114,28 @@ mockingboard_found:
jsr load_rle_gr
;===========================
; init pointer to the music
;===========================
jsr read_file
lda #>CHUNK_BUFFER
sta INH
lda #<CHUNK_BUFFER
sta INL
lda #$0
sta MB_CHUNK
;============================
; Enable 6502 interrupts
;============================
;
cli ; clear interrupt mask
;============================
; Loop forever
@ -237,7 +243,7 @@ done_interrupt:
.include "../asm_routines/gr_offsets.s"
.include "../asm_routines/text_print.s"
.include "../asm_routines/mockingboard_a.s"
.include "../asm_routines/lzss_decompress.s"
;.include "../asm_routines/lzss_decompress.s"
.include "../asm_routines/gr_fast_clear.s"
.include "../asm_routines/pageflip.s"
.include "../asm_routines/gr_unrle.s"

218
chiptune_player/zp.inc
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@ -2,119 +2,135 @@
;; Zero page monitor routines addresses
WNDLFT EQU $20
WNDWDTH EQU $21
WNDTOP EQU $22
WNDBTM EQU $23
CH EQU $24
CV EQU $25
GBASL EQU $26
GBASH EQU $27
BASL EQU $28
BASH EQU $29
H2 EQU $2C
V2 EQU $2D
MASK EQU $2E
COLOR EQU $30
INVFLG EQU $32
;WNDLFT EQU $20
;WNDWDTH EQU $21
;WNDTOP EQU $22
;WNDBTM EQU $23
CH EQU $24
CV EQU $25
GBASL EQU $26
GBASH EQU $27
BASL EQU $28
BASH EQU $29
;H2 EQU $2C
;V2 EQU $2D
;MASK EQU $2E
COLOR EQU $30
;INVFLG EQU $32
; More zero-page addresses
; we try not to conflict with anything DOS, MONITOR or BASIC related
COLOR1 EQU $E0
COLOR2 EQU $E1
MATCH EQU $E2
XX EQU $E3
YY EQU $E4
YADD EQU $E5
LOOP EQU $E6
MEMPTRL EQU $E7
MEMPTRH EQU $E8
NAMEL EQU $E9
NAMEH EQU $EA
NAMEX EQU $EB
CHAR EQU $EC
DISP_PAGE EQU $ED
DRAW_PAGE EQU $EE
FIRST EQU $F0
LASTKEY EQU $F1
PADDLE_STATUS EQU $F2
XPOS EQU $F3
YPOS EQU $F4
TEMP EQU $FA
RUN EQU $FA
TEMP2 EQU $FB
TEMPY EQU $FB
INL EQU $FC
INH EQU $FD
OUTL EQU $FE
OUTH EQU $FF
; dos33 zero page = 26-2f, 35-38, 3e 3f 40-4d
; overlap applesoft 67-6a,6f,70,af,b0,ca-cd,d8
;; Flying Routine Only
RWTSL EQU $60
RWTSH EQU $61
DOSBUFL EQU $62
DOSBUFH EQU $63
FILEML EQU $64
FILEMH EQU $65
TURNING EQU $60
;TURNING EQU $60
;SCREEN_X EQU $61 ; not used?
SCREEN_Y EQU $62
ANGLE EQU $63
HORIZ_SCALE_I EQU $64
HORIZ_SCALE_F EQU $65
FACTOR_I EQU $66
FACTOR_F EQU $67
DX_I EQU $68
DX_F EQU $69
SPACEX_I EQU $6A
SPACEX_F EQU $6B
CX_I EQU $6C
CX_F EQU $6D
DY_I EQU $6E
DY_F EQU $6F
SPACEY_I EQU $70
SPACEY_F EQU $71
CY_I EQU $72
CY_F EQU $73
TEMP_I EQU $74
TEMP_F EQU $75
DISTANCE_I EQU $76
DISTANCE_F EQU $77
SPACEZ_I EQU $78
SPACEZ_F EQU $79
DRAW_SPLASH EQU $7A
SPEED EQU $7B
SPLASH_COUNT EQU $7C
OVER_LAND EQU $7D
NUM1L EQU $7E
NUM1H EQU $7F
NUM2L EQU $80
NUM2H EQU $81
RESULT EQU $82 ; 83,84,85
NEGATE EQU $86 ; UNUSED?
LAST_SPACEX_I EQU $87
LAST_SPACEY_I EQU $88
LAST_MAP_COLOR EQU $89
DRAW_SKY EQU $8A
COLOR_MASK EQU $8B
KEY_COUNT EQU $8C
KEY_OFFSET EQU $8D
DRAW_BLUE_SKY EQU $8E
RANDOM_POINTER EQU $8F
FRAME_COUNT EQU $90
;SCREEN_Y EQU $62
;ANGLE EQU $63
;HORIZ_SCALE_I EQU $64
;HORIZ_SCALE_F EQU $65
;FACTOR_I EQU $66
;FACTOR_F EQU $67
;DX_I EQU $68
;DX_F EQU $69
;SPACEX_I EQU $6A
;SPACEX_F EQU $6B
;CX_I EQU $6C
;CX_F EQU $6D
;DY_I EQU $6E
;DY_F EQU $6F
;SPACEY_I EQU $70
;SPACEY_F EQU $71
;CY_I EQU $72
;CY_F EQU $73
;TEMP_I EQU $74
;TEMP_F EQU $75
;DISTANCE_I EQU $76
;DISTANCE_F EQU $77
;SPACEZ_I EQU $78
;SPACEZ_F EQU $79
;DRAW_SPLASH EQU $7A
;SPEED EQU $7B
;SPLASH_COUNT EQU $7C
;OVER_LAND EQU $7D
;NUM1L EQU $7E
;NUM1H EQU $7F
;NUM2L EQU $80
;NUM2H EQU $81
;RESULT EQU $82 ; 83,84,85
;NEGATE EQU $86 ; UNUSED?
;LAST_SPACEX_I EQU $87
;LAST_SPACEY_I EQU $88
;LAST_MAP_COLOR EQU $89
;DRAW_SKY EQU $8A
;COLOR_MASK EQU $8B
;KEY_COUNT EQU $8C
;KEY_OFFSET EQU $8D
;DRAW_BLUE_SKY EQU $8E
;RANDOM_POINTER EQU $8F
;FRAME_COUNT EQU $90
MB_VALUE EQU $91
MB_CHUNK EQU $92
MB_ADDRL EQU $91
MB_ADDRH EQU $92
DONE_PLAYING EQU $93
MB_FRAME_DIFF EQU $94
LZSS_RL EQU $95
LZSS_RH EQU $96
LZSS_COUNT EQU $97
LZSS_MASK EQU $98
LZSS_ENDL EQU $99
LZSS_ENDH EQU $9A
MB_FRAME_DIFF2 EQU $9F
;LZSS_RL EQU $95
;LZSS_RH EQU $96
;LZSS_COUNT EQU $97
;LZSS_MASK EQU $98
;LZSS_ENDL EQU $99
;LZSS_ENDH EQU $9A
;MB_FRAME_DIFF2 EQU $9F
; More zero-page addresses
; we try not to conflict with anything DOS, MONITOR or BASIC related
;COLOR1 EQU $E0
;COLOR2 EQU $E1
;MATCH EQU $E2
;XX EQU $E3
;YY EQU $E4
;SHIPY EQU $E4
;YADD EQU $E5
;LOOP EQU $E6
;MEMPTRL EQU $E7
;MEMPTRH EQU $E8
;NAMEL EQU $E9
;NAMEH EQU $EA
;NAMEX EQU $EB
;CHAR EQU $EC
DISP_PAGE EQU $ED
DRAW_PAGE EQU $EE
;FIRST EQU $F0
;LASTKEY EQU $F1
;PADDLE_STATUS EQU $F2
XPOS EQU $F3
;YPOS EQU $F4
TEMP EQU $FA
;RUN EQU $FA
;TEMP2 EQU $FB
;TEMPY EQU $FB
INL EQU $FC
INH EQU $FD
OUTL EQU $FE
OUTH EQU $FF
SHIPY EQU $E4
KEYPRESS EQU $C000
KEYRESET EQU $C010