mirror of
https://github.com/sehugg/8bitworkshop.git
synced 2024-11-25 03:34:05 +00:00
510 lines
11 KiB
Plaintext
510 lines
11 KiB
Plaintext
EVENT__start = 1
|
|
EVENT__postframe = 1
|
|
EVENT__preframe = 1
|
|
EVENT__kernel = 1
|
|
EVENT__compute2digit = 1
|
|
EVENT__fetchdigit = 1
|
|
EVENT__AddBCD4 = 1
|
|
EVENT__AddBCD2 = 1
|
|
EVENT__SubBCD2 = 1
|
|
EVENT__joybutton = 1
|
|
.scope Main
|
|
.zeropage
|
|
BCDScore6_digits_b0:
|
|
.res 1
|
|
BCDScore6_digits_b8:
|
|
.res 1
|
|
BCDScore6_digits_b16:
|
|
.res 1
|
|
PFColor_pfcolor_b0:
|
|
.res 1
|
|
BGColor_bgcolor_b0:
|
|
.res 1
|
|
BCDScore2_digits_b0:
|
|
.res 1
|
|
.res 1
|
|
BCDScore2_scorecolor_b0:
|
|
.res 1
|
|
.res 1
|
|
TEMP:
|
|
Kernel6Digit__2__tmp:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
Kernel2Digit__3__tmp:
|
|
.res 1
|
|
.res 1
|
|
.res 1
|
|
.code
|
|
Main__INITDATA:
|
|
.byte 86
|
|
.byte 52
|
|
.byte 18
|
|
.byte 60
|
|
.byte 2
|
|
.byte 36
|
|
.byte 86
|
|
.byte 206
|
|
.byte 62
|
|
__Start:
|
|
|
|
;;; start action Init__main_init__1
|
|
|
|
.include "vcs-ca65.h"
|
|
.macpack longbranch
|
|
.define PAL 0
|
|
__NMI:
|
|
__Reset:
|
|
__BRK:
|
|
CLEAN_START
|
|
|
|
ldy #9
|
|
: lda Main__INITDATA-1,y
|
|
sta BCDScore6_digits_b0-1,y
|
|
dey
|
|
bne :-
|
|
|
|
;;; start action FrameLoop__start__3
|
|
|
|
|
|
FrameLoop__start__4__NextFrame:
|
|
FRAME_END
|
|
|
|
FRAME_START
|
|
|
|
;;; start action Kernel6Digit__preframe__5
|
|
|
|
Digit0 = Kernel6Digit__2__tmp+0
|
|
Digit1 = Kernel6Digit__2__tmp+2
|
|
Digit2 = Kernel6Digit__2__tmp+4
|
|
Digit3 = Kernel6Digit__2__tmp+6
|
|
Digit4 = Kernel6Digit__2__tmp+8
|
|
Digit5 = Kernel6Digit__2__tmp+10
|
|
Kernel6Digit__preframe__7__BCD0 = Kernel6Digit__2__tmp+12
|
|
Kernel6Digit__preframe__7__BCD1 = Kernel6Digit__2__tmp+13
|
|
Kernel6Digit__preframe__7__BCD2 = Kernel6Digit__2__tmp+14
|
|
|
|
lda BCDScore6_digits_b0
|
|
sta Kernel6Digit__preframe__7__BCD0
|
|
lda BCDScore6_digits_b8
|
|
sta Kernel6Digit__preframe__7__BCD1
|
|
lda BCDScore6_digits_b16
|
|
sta Kernel6Digit__preframe__7__BCD2
|
|
ldx #0 ; leftmost bitmap
|
|
ldy #2 ; start from most-sigificant BCD value
|
|
Kernel6Digit__preframe__7__Loop:
|
|
lda Kernel6Digit__preframe__7__BCD0,y ; get BCD value
|
|
and #$f0 ; isolate high nibble (* 16)
|
|
lsr ; shift right 1 bit (* 8)
|
|
clc
|
|
adc #<FontTable
|
|
sta Digit0,x ; store pointer lo byte
|
|
lda #>FontTable
|
|
adc #0
|
|
sta Digit0+1,x ; store pointer hi byte
|
|
inx
|
|
inx ; next bitmap pointer
|
|
lda Kernel6Digit__preframe__7__BCD0,y ; get BCD value (again)
|
|
and #$f ; isolate low nibble
|
|
asl
|
|
asl
|
|
asl ; * 8
|
|
clc
|
|
adc #<FontTable
|
|
sta Digit0,x ; store pointer lo byte
|
|
lda #>FontTable
|
|
adc #0
|
|
sta Digit0+1,x ; store pointer hi byte
|
|
inx
|
|
inx ; next bitmap pointer
|
|
dey ; next BCD value
|
|
bpl Kernel6Digit__preframe__7__Loop ; repeat until < 0
|
|
|
|
;;; end action Kernel6Digit__preframe__5
|
|
|
|
;;; start action Kernel2Digit__preframe__8
|
|
|
|
lda #0
|
|
sta Kernel2Digit__3__tmp+1
|
|
sta Kernel2Digit__3__tmp+2
|
|
|
|
;;; end action Kernel2Digit__preframe__8
|
|
|
|
|
|
KERNEL_START
|
|
|
|
;;; start action Kernel6Digit__kernel__10
|
|
|
|
lda PFColor_pfcolor_b0
|
|
sta COLUP0
|
|
sta COLUP1
|
|
lda #3
|
|
sta NUSIZ0
|
|
sta NUSIZ1
|
|
; set horizontal position of player objects
|
|
sta WSYNC
|
|
sta HMCLR
|
|
SLEEPR 24
|
|
sta RESP0
|
|
sta RESP1
|
|
lda #$10
|
|
sta HMP1
|
|
sta WSYNC
|
|
sta HMOVE
|
|
SLEEPR 24 ; wait 24 cycles between write to HMOVE and HMxxx
|
|
sta HMCLR
|
|
lda #1
|
|
sta VDELP0
|
|
sta VDELP1
|
|
|
|
;;; end action Kernel6Digit__kernel__10
|
|
|
|
jsr Kernel6Digit__kernel__13
|
|
|
|
;;; start action Kernel2Digit__kernel__16
|
|
|
|
lda #$02
|
|
sta CTRLPF
|
|
; TODO: should be constants
|
|
; and it's wrong, too!
|
|
lda BCDScore2_scorecolor_b0+0
|
|
sta COLUP0
|
|
lda BCDScore2_scorecolor_b0+1
|
|
sta COLUP1
|
|
|
|
;;; end action Kernel2Digit__kernel__16
|
|
|
|
jsr Kernel2Digit__kernel__19
|
|
|
|
KERNEL_END
|
|
|
|
|
|
;;; start action FrameLoop__postframe__40
|
|
|
|
lsr SWCHB ; test Game Reset switch
|
|
bcs FrameLoop__postframe__41__NoStart
|
|
|
|
FrameLoop__postframe__41__NoStart:
|
|
|
|
;;; end action FrameLoop__postframe__40
|
|
|
|
;;; start action JoyButton__postframe__42
|
|
|
|
lda INPT4 ;read button input
|
|
bmi JoyButton__postframe__44__NotPressed
|
|
|
|
;;; start action IncScore__joybutton__45
|
|
|
|
|
|
;;; start action BCDMath__AddBCD4__48
|
|
|
|
.ifnblank $0210
|
|
lda #<$0210
|
|
ldy #>$0210
|
|
.endif
|
|
|
|
;;; end action BCDMath__AddBCD4__48
|
|
|
|
;;; start action BCDMath__AddBCD4__50
|
|
|
|
; Adds value to 6-BCD-digit score.
|
|
; A = 1st BCD digit
|
|
; Y = 2nd BCD digit
|
|
sed ; enter BCD mode
|
|
clc ; clear carry
|
|
adc BCDScore6_digits_b0
|
|
sta BCDScore6_digits_b0
|
|
tya
|
|
adc BCDScore6_digits_b8
|
|
sta BCDScore6_digits_b8
|
|
lda BCDScore6_digits_b16
|
|
adc #0
|
|
sta BCDScore6_digits_b16
|
|
cld ; exit BCD mode
|
|
|
|
;;; end action BCDMath__AddBCD4__50
|
|
|
|
|
|
;;; end action IncScore__joybutton__45
|
|
|
|
JoyButton__postframe__44__NotPressed:
|
|
|
|
;;; end action JoyButton__postframe__42
|
|
|
|
jmp FrameLoop__start__4__NextFrame ; loop to next frame
|
|
|
|
;;; end action FrameLoop__start__3
|
|
; start main routine
|
|
.segment "VECTORS"
|
|
ZeroByte: .byte $00
|
|
Return: .byte $60
|
|
VecNMI:
|
|
VecReset: .word __Reset
|
|
VecBRK: .word __BRK
|
|
.code
|
|
|
|
;;; end action Init__main_init__1
|
|
.rodata
|
|
__ALIGNORIGIN:
|
|
.rodata
|
|
Kernel6Digit__kernel__13:
|
|
|
|
; Display the resulting 48x8 bitmap
|
|
; using the Digit0-5 pointers.
|
|
Kernel6Digit__kernel__15__LoopCount = Kernel6Digit__2__tmp+12
|
|
Kernel6Digit__kernel__15__Temp = Kernel6Digit__2__tmp+13
|
|
|
|
lda BGColor_bgcolor_b0
|
|
sta WSYNC
|
|
sta COLUBK
|
|
lda #7
|
|
sta Kernel6Digit__kernel__15__LoopCount
|
|
SLEEPR 20 ; TODO?
|
|
:
|
|
ldy Kernel6Digit__kernel__15__LoopCount ; counts backwards
|
|
lda (Digit0),y ; load B0 (1st sprite byte)
|
|
sta GRP0 ; B0 -> [GRP0]
|
|
lda (Digit1),y ; load B1 -> A
|
|
sta GRP1 ; B1 -> [GRP1], B0 -> GRP0
|
|
sta WSYNC ; sync to next scanline
|
|
lda (Digit2),y ; load B2 -> A
|
|
sta GRP0 ; B2 -> [GRP0], B1 -> GRP1
|
|
lda (Digit5),y ; load B5 -> A
|
|
sta Kernel6Digit__kernel__15__Temp ; B5 -> temp
|
|
lda (Digit4),y ; load B4
|
|
tax ; -> X
|
|
lda (Digit3),y ; load B3 -> A
|
|
ldy Kernel6Digit__kernel__15__Temp ; load B5 -> Y
|
|
sta GRP1 ; B3 -> [GRP1]; B2 -> GRP0
|
|
stx GRP0 ; B4 -> [GRP0]; B3 -> GRP1
|
|
sty GRP1 ; B5 -> [GRP1]; B4 -> GRP0
|
|
sta GRP0 ; ?? -> [GRP0]; B5 -> GRP1
|
|
dec Kernel6Digit__kernel__15__LoopCount ; go to next line
|
|
bpl :- ; repeat until < 0
|
|
|
|
lda #0 ; clear the sprite registers
|
|
sta WSYNC
|
|
sta GRP0
|
|
sta GRP1
|
|
sta GRP0
|
|
sta GRP1
|
|
sta COLUBK
|
|
|
|
rts
|
|
|
|
.assert >(Kernel6Digit__kernel__13) = >(*), error, "Kernel6Digit__kernel__13 crosses a page boundary!"
|
|
|
|
.assert (* - Kernel6Digit__kernel__13) <= 72, error, .sprintf("Kernel6Digit__kernel__13 does not fit in 72 bytes, it took %d!", (* - Kernel6Digit__kernel__13))
|
|
|
|
.if <(* - __ALIGNORIGIN) > 256-98
|
|
.align $100
|
|
.endif
|
|
.rodata
|
|
Kernel2Digit__kernel__19:
|
|
|
|
lda #7
|
|
sta Kernel2Digit__3__tmp+0
|
|
Kernel2Digit__kernel__21__Loop:
|
|
ldx #0
|
|
sta WSYNC
|
|
|
|
;;; start action Kernel2Digit__compute2digit__22
|
|
|
|
lda Kernel2Digit__3__tmp+1 ; load 1st pf
|
|
sta PF1 ; store 1st pf
|
|
; first digit
|
|
lda BCDScore2_digits_b0 + 0
|
|
pha
|
|
and #$0f
|
|
asl
|
|
asl
|
|
asl
|
|
|
|
;;; start action Kernel2Digit__fetchdigit__24
|
|
|
|
adc Kernel2Digit__3__tmp+0
|
|
tay
|
|
; TODO: select your own?
|
|
lda FontTablePF,y
|
|
|
|
;;; end action Kernel2Digit__fetchdigit__24
|
|
|
|
and #$0f
|
|
ldy Kernel2Digit__3__tmp+2 ; load 2nd pf
|
|
sta Kernel2Digit__3__tmp+1 + 0
|
|
; second digit
|
|
pla
|
|
and #$f0
|
|
lsr
|
|
sty PF1 ; store 2nd pf
|
|
|
|
;;; start action Kernel2Digit__fetchdigit__26
|
|
|
|
adc Kernel2Digit__3__tmp+0
|
|
tay
|
|
; TODO: select your own?
|
|
lda FontTablePF,y
|
|
|
|
;;; end action Kernel2Digit__fetchdigit__26
|
|
|
|
and #$f0
|
|
ora Kernel2Digit__3__tmp+1 + 0
|
|
sta Kernel2Digit__3__tmp+1 + 0
|
|
|
|
;;; end action Kernel2Digit__compute2digit__22
|
|
|
|
.if 2>1
|
|
inx
|
|
|
|
;;; start action Kernel2Digit__compute2digit__28
|
|
|
|
lda Kernel2Digit__3__tmp+1 ; load 1st pf
|
|
sta PF1 ; store 1st pf
|
|
; first digit
|
|
lda BCDScore2_digits_b0 + 1
|
|
pha
|
|
and #$0f
|
|
asl
|
|
asl
|
|
asl
|
|
|
|
;;; start action Kernel2Digit__fetchdigit__30
|
|
|
|
adc Kernel2Digit__3__tmp+0
|
|
tay
|
|
; TODO: select your own?
|
|
lda FontTablePF,y
|
|
|
|
;;; end action Kernel2Digit__fetchdigit__30
|
|
|
|
and #$0f
|
|
ldy Kernel2Digit__3__tmp+2 ; load 2nd pf
|
|
sta Kernel2Digit__3__tmp+1 + 1
|
|
; second digit
|
|
pla
|
|
and #$f0
|
|
lsr
|
|
sty PF1 ; store 2nd pf
|
|
|
|
;;; start action Kernel2Digit__fetchdigit__32
|
|
|
|
adc Kernel2Digit__3__tmp+0
|
|
tay
|
|
; TODO: select your own?
|
|
lda FontTablePF,y
|
|
|
|
;;; end action Kernel2Digit__fetchdigit__32
|
|
|
|
and #$f0
|
|
ora Kernel2Digit__3__tmp+1 + 1
|
|
sta Kernel2Digit__3__tmp+1 + 1
|
|
|
|
;;; end action Kernel2Digit__compute2digit__28
|
|
|
|
.else
|
|
|
|
;;; start action Kernel2Digit__compute2digit__34
|
|
|
|
lda Kernel2Digit__3__tmp+1 ; load 1st pf
|
|
sta PF1 ; store 1st pf
|
|
; first digit
|
|
lda BCDScore2_digits_b0 + 0
|
|
pha
|
|
and #$0f
|
|
asl
|
|
asl
|
|
asl
|
|
|
|
;;; start action Kernel2Digit__fetchdigit__36
|
|
|
|
adc Kernel2Digit__3__tmp+0
|
|
tay
|
|
; TODO: select your own?
|
|
lda FontTablePF,y
|
|
|
|
;;; end action Kernel2Digit__fetchdigit__36
|
|
|
|
and #$0f
|
|
ldy Kernel2Digit__3__tmp+2 ; load 2nd pf
|
|
sta Kernel2Digit__3__tmp+1 + 0
|
|
; second digit
|
|
pla
|
|
and #$f0
|
|
lsr
|
|
sty PF1 ; store 2nd pf
|
|
|
|
;;; start action Kernel2Digit__fetchdigit__38
|
|
|
|
adc Kernel2Digit__3__tmp+0
|
|
tay
|
|
; TODO: select your own?
|
|
lda FontTablePF,y
|
|
|
|
;;; end action Kernel2Digit__fetchdigit__38
|
|
|
|
and #$f0
|
|
ora Kernel2Digit__3__tmp+1 + 0
|
|
sta Kernel2Digit__3__tmp+1 + 0
|
|
|
|
;;; end action Kernel2Digit__compute2digit__34
|
|
|
|
.endif
|
|
; playfield
|
|
dec Kernel2Digit__3__tmp+0
|
|
jpl Kernel2Digit__kernel__21__Loop
|
|
; dex
|
|
; stx PF1
|
|
|
|
rts
|
|
|
|
.assert >(Kernel2Digit__kernel__19) = >(*), error, "Kernel2Digit__kernel__19 crosses a page boundary!"
|
|
|
|
.assert (* - Kernel2Digit__kernel__19) <= 98, error, .sprintf("Kernel2Digit__kernel__19 does not fit in 98 bytes, it took %d!", (* - Kernel2Digit__kernel__19))
|
|
FontTable:
|
|
|
|
;;; start action FontTable__FontTable__53
|
|
|
|
; Font table for digits 0-9 (8x8 pixels)
|
|
;;{w:8,h:8,count:10,brev:1,flip:1};;
|
|
.byte $00,$3c,$66,$66,$76,$6e,$66,$3c,$00,$7e,$18,$18,$18,$38,$18,$18
|
|
.byte $00,$7e,$60,$30,$0c,$06,$66,$3c,$00,$3c,$66,$06,$1c,$06,$66,$3c
|
|
.byte $00,$06,$06,$7f,$66,$1e,$0e,$06,$00,$3c,$66,$06,$06,$7c,$60,$7e
|
|
.byte $00,$3c,$66,$66,$7c,$60,$66,$3c,$00,$18,$18,$18,$18,$0c,$66,$7e
|
|
.byte $00,$3c,$66,$66,$3c,$66,$66,$3c,$00,$3c,$66,$06,$3e,$66,$66,$3c
|
|
|
|
;;; end action FontTable__FontTable__53
|
|
|
|
FontTablePF:
|
|
|
|
;;; start action FontTablePF__FontTablePF__55
|
|
|
|
; Font table for digits 0-9 (4x8 pixels)
|
|
;;{w:8,h:8,count:10,brev:1,flip:1};;
|
|
.byte $00,$00,$EE,$AA,$AA,$AA,$EE,$00
|
|
.byte $00,$00,$22,$22,$22,$22,$22,$00
|
|
.byte $00,$00,$EE,$88,$EE,$22,$EE,$00
|
|
.byte $00,$00,$EE,$22,$66,$22,$EE,$00
|
|
.byte $00,$00,$22,$22,$EE,$AA,$AA,$00
|
|
.byte $00,$00,$EE,$22,$EE,$88,$EE,$00
|
|
.byte $00,$00,$EE,$AA,$EE,$88,$EE,$00
|
|
.byte $00,$00,$22,$22,$22,$22,$EE,$00
|
|
.byte $00,$00,$EE,$AA,$EE,$AA,$EE,$00
|
|
.byte $00,$00,$EE,$22,$EE,$AA,$EE,$00
|
|
;;
|
|
|
|
;;; end action FontTablePF__FontTablePF__55
|
|
|
|
.endscope
|
|
Main__Start = Main::__Start |