bubble: update codes
This commit is contained in:
Vince Weaver
parent
c6945019ab
commit
e074a11beb
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@ -7,7 +7,8 @@ EMPTY_DISK = ../../../empty_disk
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all: bubble.dsk make_table
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bubble.dsk: HELLO BUBBLE.BAS BUBBLE BUBBLE_ORIG BUBBLE_ROLLED DIAMOND
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bubble.dsk: HELLO BUBBLE.BAS BUBBLE BUBBLE_C64 \
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BUBBLE_ORIG BUBBLE_ROLLED DIAMOND FAST_DOTS
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cp $(EMPTY_DISK)/empty.dsk bubble.dsk
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$(DOS33) -y bubble.dsk SAVE A HELLO
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$(DOS33) -y bubble.dsk SAVE A BUBBLE.BAS
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@ -15,6 +16,8 @@ bubble.dsk: HELLO BUBBLE.BAS BUBBLE BUBBLE_ORIG BUBBLE_ROLLED DIAMOND
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$(DOS33) -y bubble.dsk BSAVE -a 0x0C00 BUBBLE_ORIG
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$(DOS33) -y bubble.dsk BSAVE -a 0x0C00 BUBBLE_ROLLED
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$(DOS33) -y bubble.dsk BSAVE -a 0x0C00 DIAMOND
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$(DOS33) -y bubble.dsk BSAVE -a 0x0C00 FAST_DOTS
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$(DOS33) -y bubble.dsk BSAVE -a 0x0C00 BUBBLE_C64
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###
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@ -31,6 +34,15 @@ bubble.o: bubble.s hgr_clear_part.s sin_unrolled.s
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###
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BUBBLE_C64: bubble_c64.o
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ld65 -o BUBBLE_C64 bubble_c64.o -C $(LINKER_SCRIPTS)/apple2_c00.inc
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bubble_c64.o: bubble_c64.s hgr_clear_part.s sin_unrolled.s
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ca65 -o bubble_c64.o bubble_c64.s -l bubble_c64.lst
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###
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BUBBLE_ORIG: bubble_orig.o
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ld65 -o BUBBLE_ORIG bubble_orig.o -C $(LINKER_SCRIPTS)/apple2_c00.inc
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@ -55,6 +67,15 @@ DIAMOND: diamond.o
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diamond.o: diamond.s
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ca65 -o diamond.o diamond.s -l diamond.lst
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###
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FAST_DOTS: fast_dots.o
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ld65 -o FAST_DOTS fast_dots.o -C $(LINKER_SCRIPTS)/apple2_c00.inc
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fast_dots.o: fast_dots.s
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ca65 -o fast_dots.o fast_dots.s -l fast_dots.lst
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###
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@ -73,5 +94,5 @@ make_table.o: make_table.c
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###
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clean:
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rm -f *~ *.o *.lst BUBBLE.BAS HELLO BUBBLE \
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DIAMOND BUBBLE_ORIG BUBBLE_ROLLED
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rm -f *~ *.o *.lst BUBBLE.BAS HELLO BUBBLE BUBBLE_C64 \
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DIAMOND BUBBLE_ORIG BUBBLE_ROLLED FAST_DOTS
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@ -0,0 +1,291 @@
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; bubble universe -- Apple II Hires
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; by Vince `deater` Weaver
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; based roughly on the BASIC code posted on the pouet forum
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; original effect by yuruyrau on twitter
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; this version based on fast c64 code
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; soft-switches
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;KEYPRESS = $C000
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;KEYRESET = $C010
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PAGE1 = $C054
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PAGE2 = $C055
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; ROM routines
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BKGND0 = $F3F4 ; clear current page to A
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HGR2 = $F3D8 ; set hires page2 and clear $4000-$5fff
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HGR = $F3E2 ; set hires page1 and clear $2000-$3fff
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HPLOT0 = $F457 ; plot at (Y,X), (A)
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;HLINRL = $F530 ; line to (X,A), (Y)
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;HCOLOR1 = $F6F0 ; set HGR_COLOR to value in X
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;COLORTBL = $F6F6
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;WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
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; zero page
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GBASL = $26
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GBASH = $27
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HPLOTYL = $92
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RXL = $96
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RXH = $97
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STEMP1L = $98
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STEMP1H = $99
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STEMP2L = $9A
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IC = $D0
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J = $D1
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XL = $D2
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XH = $D3
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;VL = $D4
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;VH = $D5
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;TL = $D6
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T = $D7
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U = $D8
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V = $D9
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HGR_PAGE = $E6
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; const
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;NUM = 32
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NUM = 24
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bubble:
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;========================
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; setup lookup tables
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jsr hgr_make_tables
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;=======================
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; init graphics
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jsr HGR
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jsr HGR2
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;=======================
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; init variables
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lda #0
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sta U
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sta V
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sta T
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;=========================
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;=========================
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; main loop
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;=========================
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;=========================
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next_frame:
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;===========================
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; "fast" clear screen
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.include "hgr_clear_part.s"
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lda T
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sta IT1
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sta IT2
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lda #0
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sta IS1
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sta IS2
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lda #24 ; 40
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sta IC
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ldx U
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ldy V
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i_loop:
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lda #24 ; 200
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sta J
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j_loop:
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clc ; 2
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IS1 = *+1
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lda sin_t,Y ; 4+
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IT1 = *+1
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adc sin_t,X ; 4+
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sta U ; 3
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IS2 = *+1
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lda cos_t,Y ; 4+
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IT2 = *+1
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adc cos_t,X ; 4+
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tay ; 2 = 23-27 cycles
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sty V
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;===========================================================
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; HPLOT 32*U+140,32*V+96
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lda U
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clc ; 2
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adc #140 ; 2
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tax ; 2
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; calculate Ypos
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lda V
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clc
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adc #96
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; "fast" hplot, Xpos in X, Ypos in A
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; Apple II hi-res is more-or-less 280x192
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; two consecutive pixels on are white
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; single pixels are colored based on palette
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; we treat things as a monochrome display, on a color
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; display odd/even pixels will have different colors
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; The Y memory offset is a horrible interleaved mess, so we use
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; a lookup table we generated at start. We also add in
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; the proper value for page-flipping
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; Apple II hi-res is 7 pixels/byte, so we also pre-generate
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; div and mod by 7 tables at start and use those
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; instead of dividing by 7
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; We cheat and don't worry about the X positions larger
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; than 256 because our algorithm only goes up to 208
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tay ; 2
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lda hposn_low,Y ; 4
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sta GBASL ; 3
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clc ; 2
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lda hposn_high,Y ; 4
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adc HGR_PAGE ; 3
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sta GBASH ; 3
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; 21
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ldy div7_table,X ; 4
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lda mod7_table,X ; 4
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tax ; 2
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; 31
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; get current 7-bit pixel range, OR in to set new pixel
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lda (GBASL),Y ; 5
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ora log_lookup,X ; 4
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sta (GBASL),Y ; 6
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; 46
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dec J
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bne j_loop
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; dec J ; 5
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; bmi done_j ; 2/3
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; jmp inner_loop ; 3
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; bpl inner_loop
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done_j:
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lda IS1
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clc
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adc #41
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sta IS1
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sta IS2
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dec IC
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bne i_loop
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; inc I ; 5
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; lda I ; 3
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; cmp #NUM ; 2
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; beq done_i ; 2/3
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; jmp outer_loop ; 3
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;done_i:
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; t=t+(1.0/32.0);
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; 1/2 1/4 1/8 1/16 | 1/32 1/64 1/128 1/256
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; $0x08
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; carry always set here as we got here from a BEQ
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; (bcs=bge, bcc=blt)
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; lda tl_smc+1 ; 4
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; adc #$7 ; really 8, carry always set ; 2
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; sta tl_smc+1 ; 4
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; lda #0 ; 2
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; adc th_smc+1 ; 4
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; sta th_smc+1 ; 4
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sty V
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inc T
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; jmp new_frame
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end:
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; flip pages
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; if $20 (draw PAGE1) draw PAGE2, SHOW page1
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; if $40 (draw PAGE2) draw PAGE1, SHOW page2
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lda HGR_PAGE
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eor #$60
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sta HGR_PAGE
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cmp #$40
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bne flip2
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flip1:
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bit PAGE1
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jmp next_frame
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flip2:
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bit PAGE2
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jmp next_frame
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.include "hgr_table.s"
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; we could calculate these, or else build them from
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; a 0..pi/2 table to save a lot of space
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; the alignment was there to potentially save cycles on page
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; crossing. Maybe not as useful that the cosine
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; goes off the page
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; which of 7 pixels to draw
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; note high bit is set to pick blue/orange palette
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; clear to get purple/green instead
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log_lookup:
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.byte $81,$82,$84,$88,$90,$A0,$C0,$80
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sin_t:
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.byte $0F,$0E,$0D,$0D,$0C,$0C,$0B,$0B,$0A,$0A,$09,$09,$08,$08,$08,$07
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.byte $07,$07,$06,$06,$06,$06,$06,$06,$05,$05,$05,$05,$05,$05,$05,$05
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.byte $05,$06,$06,$06,$06,$06,$06,$07,$07,$07,$08,$08,$08,$09,$09,$0A
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.byte $0A,$0B,$0B,$0C,$0C,$0D,$0D,$0E,$0F,$0F,$10,$10,$11,$12,$13,$13
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.byte $14,$15,$16,$17,$17,$18,$19,$1A,$1B,$1C,$1D,$1D,$1E,$1F,$20,$21
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.byte $22,$23,$24,$25,$26,$27,$28,$29,$2A,$2B,$2C,$2D,$2E,$2F,$30,$31
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.byte $32,$33,$34,$35,$36,$37,$38,$39,$3A,$3B,$3C,$3D,$3E,$3F,$3F,$40
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.byte $41,$42,$43,$44,$45,$45,$46,$47,$48,$49,$49,$4A,$4B,$4C,$4C,$4D
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.byte $4D,$4E,$4F,$4F,$50,$50,$51,$51,$52,$52,$53,$53,$54,$54,$54,$55
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.byte $55,$55,$56,$56,$56,$56,$56,$56,$57,$57,$57,$57,$57,$57,$57,$57
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.byte $57,$56,$56,$56,$56,$56,$56,$55,$55,$55,$54,$54,$54,$53,$53,$52
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.byte $52,$51,$51,$50,$50,$4F,$4F,$4E,$4D,$4D,$4C,$4C,$4B,$4A,$49,$49
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.byte $48,$47,$46,$45,$45,$44,$43,$42,$41,$40,$3F,$3F,$3E,$3D,$3C,$3B
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.byte $3A,$39,$38,$37,$36,$35,$34,$33,$32,$31,$30,$2F,$2E,$2D,$2C,$2B
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.byte $2A,$29,$28,$27,$26,$25,$24,$23,$22,$21,$20,$1F,$1E,$1D,$1D,$1C
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.byte $1B,$1A,$19,$18,$17,$17,$16,$15,$14,$13,$13,$12,$11,$10,$10,$0F
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cos_t:
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.byte $14,$15,$16,$17,$17,$18,$19,$1A,$1B,$1C,$1D,$1D,$1E,$1F,$20,$21
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.byte $22,$23,$24,$25,$26,$27,$28,$29,$2A,$2B,$2C,$2D,$2E,$2F,$30,$31
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.byte $32,$33,$34,$35,$36,$37,$38,$39,$3A,$3B,$3C,$3D,$3E,$3F,$3F,$40
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.byte $41,$42,$43,$44,$45,$45,$46,$47,$48,$49,$49,$4A,$4B,$4C,$4C,$4D
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.byte $4D,$4E,$4F,$4F,$50,$50,$51,$51,$52,$52,$53,$53,$54,$54,$54,$55
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.byte $55,$55,$56,$56,$56,$56,$56,$56,$57,$57,$57,$57,$57,$57,$57,$57
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.byte $57,$56,$56,$56,$56,$56,$56,$55,$55,$55,$54,$54,$54,$53,$53,$52
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.byte $52,$51,$51,$50,$50,$4F,$4F,$4E,$4D,$4D,$4C,$4C,$4B,$4A,$49,$49
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.byte $48,$47,$46,$45,$45,$44,$43,$42,$41,$40,$3F,$3F,$3E,$3D,$3C,$3B
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.byte $3A,$39,$38,$37,$36,$35,$34,$33,$32,$31,$30,$2F,$2E,$2D,$2C,$2B
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.byte $2A,$29,$28,$27,$26,$25,$24,$23,$22,$21,$20,$1F,$1E,$1D,$1D,$1C
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.byte $1B,$1A,$19,$18,$17,$17,$16,$15,$14,$13,$13,$12,$11,$10,$10,$0F
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.byte $0F,$0E,$0D,$0D,$0C,$0C,$0B,$0B,$0A,$0A,$09,$09,$08,$08,$08,$07
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.byte $07,$07,$06,$06,$06,$06,$06,$06,$05,$05,$05,$05,$05,$05,$05,$05
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.byte $05,$06,$06,$06,$06,$06,$06,$07,$07,$07,$08,$08,$08,$09,$09,$0A
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.byte $0A,$0B,$0B,$0C,$0C,$0D,$0D,$0E,$0F,$0F,$10,$10,$11,$12,$13,$13
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@ -0,0 +1,354 @@
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; bubble universe -- Apple II Hires
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; soft-switches
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KEYPRESS = $C000
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KEYRESET = $C010
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PAGE1 = $C054
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PAGE2 = $C055
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; ROM routines
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BKGND0 = $F3F4 ; clear current page to A
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HGR2 = $F3D8 ; set hires page2 and clear $4000-$5fff
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HGR = $F3E2 ; set hires page1 and clear $2000-$3fff
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HPLOT0 = $F457 ; plot at (Y,X), (A)
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HLINRL = $F530 ; line to (X,A), (Y)
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HCOLOR1 = $F6F0 ; set HGR_COLOR to value in X
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COLORTBL = $F6F6
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WAIT = $FCA8 ; delay 1/2(26+27A+5A^2) us
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; zero page
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HPLOTXL = $90
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HPLOTXH = $91
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HPLOTYL = $92
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HPLOTYH = $93
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IVL = $94
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IVH = $95
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RXL = $96
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RXH = $97
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OUT1L = $98
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OUT1H = $99
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OUT2L = $9A
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OUT2H = $9B
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STEMP1L = $9C
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STEMP1H = $9D
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STEMP2L = $9E
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STEMP2H = $9F
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I = $D0
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J = $D1
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XL = $D4
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XH = $D5
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VL = $D6
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VH = $D7
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TL = $DA
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TH = $DB
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UL = $DC
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UH = $DD
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HGR_PAGE = $E6
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; const
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NUM = 32
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bubble:
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jsr HGR2
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ldx #7
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jsr HCOLOR1
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lda #0
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sta XL
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sta XH
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sta VL
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sta VH
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sta TL
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sta TH
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next_frame:
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lda #0
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jsr BKGND0
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main_loop:
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ldx #0
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stx I
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outer_loop:
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ldx #0
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stx J
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inner_loop:
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; fixed_add(rh[i],rl[i],xh,xl,&rxh,&rxl);
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; note: rh is always 0
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ldx I ; 3
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clc ; 2
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lda rl,X
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adc XL ; 3
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sta RXL ; 3
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lda #0 ; 2
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adc XH ; 3
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sta RXH ; 3
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; fixed_add(i,0,vh,vl,&ivh,&ivl);
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clc
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lda #0
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adc VL
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sta IVL
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lda I
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adc VH
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sta IVH
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; U=SIN(I+V)+SIN(RR+X)
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; float_to_fixed(sin(ivh,ivl) + sin(rxh,rxl), &uh,&ul);
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ldy #0
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jsr sin
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ldy #2
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jsr sin
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clc
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lda OUT1L
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adc OUT2L
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sta UL
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lda OUT1H
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adc OUT2H
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sta UH
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; 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
|
||||
|
||||
|
|
@ -0,0 +1,403 @@
|
|||
; bubble universe -- Apple II Hires
|
||||
|
||||
; original = 612 bytes
|
||||
; clear screen:
|
||||
; bkgnd0 = $44198 = 278936 cycles = max ~4fps
|
||||
; new: $A616 = 42518 = max ~22fps
|
||||
; hplot
|
||||
; hplot0 = ($14E-$15C) $14E = 334 * 1024 = 342016 = max ~3fps
|
||||
; lookup = 46 * 1024 = 47104 = max ~21fps
|
||||
|
||||
|
||||
; after fast graphics
|
||||
; D7E77 = 884343 = 1.1fps
|
||||
|
||||
|
||||
; 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
|
||||
|
||||
GBASL = $26
|
||||
GBASH = $27
|
||||
|
||||
|
||||
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 hgr_make_tables
|
||||
|
||||
jsr HGR2
|
||||
|
||||
ldx #7
|
||||
jsr HCOLOR1
|
||||
|
||||
lda #0
|
||||
sta XL
|
||||
sta XH
|
||||
sta VL
|
||||
sta VH
|
||||
sta TL
|
||||
sta TH
|
||||
|
||||
next_frame:
|
||||
|
||||
jsr hgr_clear_screen
|
||||
|
||||
; lda #0
|
||||
; jsr BKGND0
|
||||
|
||||
main_loop:
|
||||
|
||||
ldx #0
|
||||
stx I
|
||||
outer_loop:
|
||||
|
||||
ldx #NUM
|
||||
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
|
||||
|
||||
tay ; 2
|
||||
lda hposn_low,Y ; 4
|
||||
sta GBASL ; 3
|
||||
clc ; 2
|
||||
lda hposn_high,Y ; 4
|
||||
adc HGR_PAGE ; 3
|
||||
sta GBASH ; 3
|
||||
; 21
|
||||
|
||||
ldy div7_table,X ; 4
|
||||
|
||||
lda mod7_table,X ; 4
|
||||
tax ; 2
|
||||
; 31
|
||||
lda (GBASL),Y ; 5
|
||||
ora log_lookup,X ; 4
|
||||
sta (GBASL),Y ; 6
|
||||
; 46
|
||||
|
||||
;div7_table = $6800
|
||||
;mod7_table = $6900
|
||||
;hposn_high = $6a00
|
||||
;hposn_low = $6b00
|
||||
|
||||
|
||||
dec J ; 5
|
||||
bne done_j ; 2/3
|
||||
jmp inner_loop ; 3
|
||||
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
|
||||
|
||||
log_lookup:
|
||||
.byte $81,$82,$84,$88,$90,$A0,$C0,$80
|
||||
|
||||
.include "hgr_clear_screen.s"
|
||||
.include "hgr_table.s"
|
||||
|
|
@ -0,0 +1,59 @@
|
|||
/* Bubble table */
|
||||
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
#include <string.h>
|
||||
#include <unistd.h>
|
||||
#include <stdlib.h>
|
||||
#include <math.h>
|
||||
|
||||
#define PI 3.14159265358979323846264
|
||||
|
||||
int main(int argc, char **argv) {
|
||||
|
||||
int i,t;
|
||||
double d;
|
||||
|
||||
// in other words, scaled to 46+/-256/2pi. and shifted by 2*46
|
||||
// the shift is there to remove the offset from u and v
|
||||
// being sums of 2 sins and 2 coses.
|
||||
// Building in the offset means my coordinates are all positive
|
||||
//cos_t .char round(cos((range(256)-92)*2.0*pi/256)*256.0/2.0/pi+46)
|
||||
//sin_t .char round(sin((range(256)-92)*2.0*pi/256)*256.0/2.0/pi+46)
|
||||
|
||||
|
||||
|
||||
int sine_table[256];
|
||||
int cos_table[256];
|
||||
|
||||
for(i=0;i<256;i++) {
|
||||
d=round(sin((i-92)*2.0*PI/256.0)*256.0/2.0/PI+46);
|
||||
sine_table[i]=(int)d;
|
||||
}
|
||||
|
||||
printf("sin_t:\n");
|
||||
for(i=0;i<256;i++) {
|
||||
if (i%16==0) printf("\t.byte\t");
|
||||
t=sine_table[i];
|
||||
printf("$%02X",t&0xff);
|
||||
if (i%16!=15) printf(",");
|
||||
else printf("\n");
|
||||
}
|
||||
|
||||
for(i=0;i<256;i++) {
|
||||
d=round(cos((i-92)*2.0*PI/256.0)*256.0/2.0/PI+46);
|
||||
cos_table[i]=(int)d;
|
||||
}
|
||||
|
||||
printf("cos_t:\n");
|
||||
for(i=0;i<256;i++) {
|
||||
if (i%16==0) printf("\t.byte\t");
|
||||
t=cos_table[i];
|
||||
printf("$%02X",t&0xff);
|
||||
if (i%16!=15) printf(",");
|
||||
else printf("\n");
|
||||
}
|
||||
|
||||
|
||||
|
||||
}
|
||||
Loading…
Reference in New Issue