mirror of
https://github.com/deater/dos33fsprogs.git
synced 2024-11-01 01:06:33 +00:00
355 lines
4.9 KiB
ArmAsm
355 lines
4.9 KiB
ArmAsm
; bubble universe -- Apple II Hires
|
|
|
|
; soft-switches
|
|
|
|
KEYPRESS = $C000
|
|
KEYRESET = $C010
|
|
PAGE1 = $C054
|
|
PAGE2 = $C055
|
|
|
|
; ROM routines
|
|
|
|
BKGND0 = $F3F4 ; clear current page to A
|
|
HGR2 = $F3D8 ; set hires page2 and clear $4000-$5fff
|
|
HGR = $F3E2 ; set hires page1 and clear $2000-$3fff
|
|
HPLOT0 = $F457 ; plot at (Y,X), (A)
|
|
HLINRL = $F530 ; line to (X,A), (Y)
|
|
HCOLOR1 = $F6F0 ; set HGR_COLOR to value in X
|
|
COLORTBL = $F6F6
|
|
WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
|
|
|
|
; zero page
|
|
|
|
HPLOTXL = $90
|
|
HPLOTXH = $91
|
|
HPLOTYL = $92
|
|
HPLOTYH = $93
|
|
IVL = $94
|
|
IVH = $95
|
|
RXL = $96
|
|
RXH = $97
|
|
OUT1L = $98
|
|
OUT1H = $99
|
|
OUT2L = $9A
|
|
OUT2H = $9B
|
|
STEMP1L = $9C
|
|
STEMP1H = $9D
|
|
STEMP2L = $9E
|
|
STEMP2H = $9F
|
|
|
|
I = $D0
|
|
J = $D1
|
|
XL = $D4
|
|
XH = $D5
|
|
VL = $D6
|
|
VH = $D7
|
|
TL = $DA
|
|
TH = $DB
|
|
UL = $DC
|
|
UH = $DD
|
|
|
|
HGR_PAGE = $E6
|
|
|
|
; const
|
|
|
|
NUM = 32
|
|
|
|
bubble:
|
|
|
|
jsr HGR2
|
|
|
|
ldx #7
|
|
jsr HCOLOR1
|
|
|
|
lda #0
|
|
sta XL
|
|
sta XH
|
|
sta VL
|
|
sta VH
|
|
sta TL
|
|
sta TH
|
|
|
|
next_frame:
|
|
|
|
lda #0
|
|
jsr BKGND0
|
|
|
|
main_loop:
|
|
|
|
ldx #0
|
|
stx I
|
|
outer_loop:
|
|
|
|
ldx #0
|
|
stx J
|
|
|
|
inner_loop:
|
|
|
|
; fixed_add(rh[i],rl[i],xh,xl,&rxh,&rxl);
|
|
; note: rh is always 0
|
|
|
|
ldx I ; 3
|
|
clc ; 2
|
|
lda rl,X
|
|
adc XL ; 3
|
|
sta RXL ; 3
|
|
lda #0 ; 2
|
|
adc XH ; 3
|
|
sta RXH ; 3
|
|
|
|
; fixed_add(i,0,vh,vl,&ivh,&ivl);
|
|
clc
|
|
lda #0
|
|
adc VL
|
|
sta IVL
|
|
lda I
|
|
adc VH
|
|
sta IVH
|
|
|
|
; U=SIN(I+V)+SIN(RR+X)
|
|
; float_to_fixed(sin(ivh,ivl) + sin(rxh,rxl), &uh,&ul);
|
|
|
|
ldy #0
|
|
jsr sin
|
|
ldy #2
|
|
jsr sin
|
|
|
|
clc
|
|
lda OUT1L
|
|
adc OUT2L
|
|
sta UL
|
|
lda OUT1H
|
|
adc OUT2H
|
|
sta UH
|
|
|
|
; V=COS(I+V)+COS(RR+X)
|
|
; float_to_fixed(cos(ivh,ivl) + cos(rxh,rxl), &vh,&vl);
|
|
|
|
ldy #0
|
|
jsr cos
|
|
ldy #2
|
|
jsr cos
|
|
|
|
clc
|
|
lda OUT1L
|
|
adc OUT2L
|
|
sta VL
|
|
lda OUT1H
|
|
adc OUT2H
|
|
sta VH
|
|
|
|
|
|
; X=U+T
|
|
; fixed_add(uh,ul,th,tl,&xh,&xl);
|
|
clc
|
|
lda UL
|
|
adc TL
|
|
sta XL
|
|
lda UH
|
|
adc TH
|
|
sta XH
|
|
|
|
; HPLOT 32*U+140,32*V+96
|
|
; hplot(48*fixed_to_float(uh,ul)+140,
|
|
; 48*fixed_to_float(vh,vl)+96);
|
|
|
|
; HPLOT0 plot at (Y,X), (A)
|
|
|
|
lda UL
|
|
sta HPLOTYL
|
|
|
|
lda UH
|
|
|
|
asl HPLOTYL
|
|
rol
|
|
asl HPLOTYL
|
|
rol
|
|
asl HPLOTYL
|
|
rol
|
|
asl HPLOTYL
|
|
rol
|
|
asl HPLOTYL
|
|
rol
|
|
|
|
clc
|
|
adc #140
|
|
tax
|
|
|
|
lda VL
|
|
sta HPLOTYL
|
|
|
|
lda VH
|
|
|
|
asl HPLOTYL
|
|
rol
|
|
asl HPLOTYL
|
|
rol
|
|
asl HPLOTYL
|
|
rol
|
|
asl HPLOTYL
|
|
rol
|
|
asl HPLOTYL
|
|
rol
|
|
|
|
clc
|
|
adc #96
|
|
|
|
|
|
ldy #0 ; never bigger than 140+48 = 188
|
|
; ldx #140
|
|
; lda #96
|
|
jsr HPLOT0
|
|
|
|
inc J
|
|
lda J
|
|
cmp #NUM
|
|
beq done_j
|
|
jmp inner_loop
|
|
done_j:
|
|
|
|
inc I
|
|
lda I
|
|
cmp #NUM
|
|
beq done_i
|
|
jmp outer_loop
|
|
done_i:
|
|
|
|
; t=t+(1.0/32.0);
|
|
; 1/2 1/4 1/8 1/16 | 1/32 1/64 1/128 1/256
|
|
; $0x08
|
|
|
|
clc
|
|
lda TL
|
|
adc #$8
|
|
sta TL
|
|
lda #0
|
|
adc TH
|
|
sta TH
|
|
|
|
end:
|
|
; flip pages
|
|
|
|
; if $20 (draw PAGE1) draw PAGE2, SHOW page1
|
|
; if $40 (draw PAGE2) draw PAGE1, SHOW page2
|
|
|
|
lda HGR_PAGE
|
|
eor #$60
|
|
sta HGR_PAGE
|
|
|
|
cmp #$40
|
|
bne flip2
|
|
flip1:
|
|
bit PAGE1
|
|
jmp next_frame
|
|
flip2:
|
|
bit PAGE2
|
|
jmp next_frame
|
|
|
|
|
|
|
|
|
|
;=======================
|
|
sin:
|
|
|
|
; / 6.28 is roughly the same as *0.16
|
|
; = .5 .25 .125 .0625 .03125
|
|
; 1/6.28 = 0.16 = 0 0 1 0 1 0 0 0 = 0x28
|
|
|
|
; i=(i*0x28)>>8;
|
|
|
|
lda IVL,Y
|
|
sta STEMP1L
|
|
lda IVH,Y
|
|
sta STEMP1H
|
|
already_loaded:
|
|
; i2=i<<3;
|
|
|
|
asl STEMP1L
|
|
rol STEMP1H
|
|
asl STEMP1L
|
|
rol STEMP1H
|
|
asl STEMP1L
|
|
rol STEMP1H
|
|
|
|
; i1=i<<5;
|
|
|
|
lda STEMP1L
|
|
sta STEMP2L
|
|
lda STEMP1H
|
|
sta STEMP2H
|
|
|
|
asl STEMP2L
|
|
rol STEMP2H
|
|
asl STEMP2L
|
|
rol STEMP2H
|
|
|
|
; i=(i1+i2)>>8;
|
|
|
|
clc
|
|
lda STEMP1L
|
|
adc STEMP2L
|
|
sta STEMP1L
|
|
|
|
lda STEMP1H
|
|
adc STEMP2H
|
|
sta STEMP1H
|
|
|
|
ldx STEMP1H
|
|
|
|
; sl=fsinh[i];
|
|
|
|
lda sin_lookup,X
|
|
asl
|
|
sta OUT1L,Y
|
|
|
|
bcs sin_negative
|
|
sin_positive:
|
|
lda #$0
|
|
beq set_sin_sign
|
|
sin_negative:
|
|
lda #$FF
|
|
set_sin_sign:
|
|
sta OUT1H,Y
|
|
|
|
rts
|
|
|
|
;=============================
|
|
cos:
|
|
; 1.57 is roughly 0x0192 in 8.8
|
|
|
|
clc
|
|
lda IVL,Y
|
|
adc #$92
|
|
sta STEMP1L
|
|
lda IVH,Y
|
|
adc #1
|
|
sta STEMP1H
|
|
|
|
jmp already_loaded
|
|
|
|
|
|
rl:
|
|
.byte $00,$06,$0C,$12,$19,$1F,$25,$2B
|
|
.byte $32,$38,$3E,$45,$4B,$51,$57,$5E
|
|
.byte $64,$6A,$71,$77,$7D,$83,$8A,$90
|
|
.byte $96,$9D,$A3,$A9,$AF,$B6,$BC,$C2
|
|
|
|
sin_lookup:
|
|
.byte $00,$03,$06,$09,$0C,$0F,$12,$15,$18,$1C,$1F,$22,$25,$28,$2B,$2E
|
|
.byte $30,$33,$36,$39,$3C,$3F,$41,$44,$47,$49,$4C,$4E,$51,$53,$55,$58
|
|
.byte $5A,$5C,$5E,$60,$62,$64,$66,$68,$6A,$6C,$6D,$6F,$70,$72,$73,$74
|
|
.byte $76,$77,$78,$79,$7A,$7B,$7C,$7C,$7D,$7E,$7E,$7F,$7F,$7F,$7F,$7F
|
|
.byte $7F,$7F,$7F,$7F,$7F,$7F,$7E,$7E,$7D,$7C,$7C,$7B,$7A,$79,$78,$77
|
|
.byte $76,$75,$73,$72,$70,$6F,$6D,$6C,$6A,$68,$66,$64,$63,$61,$5E,$5C
|
|
.byte $5A,$58,$56,$53,$51,$4E,$4C,$49,$47,$44,$41,$3F,$3C,$39,$36,$34
|
|
.byte $31,$2E,$2B,$28,$25,$22,$1F,$1C,$19,$16,$12,$0F,$0C,$09,$06,$03
|
|
.byte $00,$FE,$FA,$F7,$F4,$F1,$EE,$EB,$E8,$E5,$E2,$DF,$DC,$D9,$D6,$D3
|
|
.byte $D0,$CD,$CA,$C7,$C4,$C2,$BF,$BC,$BA,$B7,$B4,$B2,$AF,$AD,$AB,$A8
|
|
.byte $A6,$A4,$A2,$A0,$9E,$9C,$9A,$98,$96,$95,$93,$91,$90,$8E,$8D,$8C
|
|
.byte $8A,$89,$88,$87,$86,$85,$84,$84,$83,$82,$82,$81,$81,$81,$81,$81
|
|
.byte $81,$81,$81,$81,$81,$81,$82,$82,$83,$84,$84,$85,$86,$87,$88,$89
|
|
.byte $8A,$8B,$8D,$8E,$8F,$91,$93,$94,$96,$98,$99,$9B,$9D,$9F,$A1,$A4
|
|
.byte $A6,$A8,$AA,$AD,$AF,$B1,$B4,$B6,$B9,$BC,$BE,$C1,$C4,$C7,$C9,$CC
|
|
.byte $CF,$D2,$D5,$D8,$DB,$DE,$E1,$E4,$E7,$EA,$ED,$F0,$F4,$F7,$FA,$FD
|
|
|