hgr: work on sier
This commit is contained in:
Vince Weaver
parent
b1d0e3805f
commit
e7c061baff
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@ -8,7 +8,7 @@ EMPTY_DISK = ../../../empty_disk/empty.dsk
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all: triangles.dsk
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triangles.dsk: HELLO TINY_TRIANGLES XOR MOD9 MOD9_64 WRITING MOVE_RIGHT \
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SIER_HGR RAINBOW_SQUARES
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SIER_HGR SIER_HPLOT SIER_MOVERIGHT RAINBOW_SQUARES
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cp $(EMPTY_DISK) triangles.dsk
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$(DOS33) -y triangles.dsk SAVE A HELLO
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$(DOS33) -y triangles.dsk BSAVE -a 0x070 TINY_TRIANGLES
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@ -18,6 +18,8 @@ triangles.dsk: HELLO TINY_TRIANGLES XOR MOD9 MOD9_64 WRITING MOVE_RIGHT \
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$(DOS33) -y triangles.dsk BSAVE -a 0x300 WRITING
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$(DOS33) -y triangles.dsk BSAVE -a 0x300 MOVE_RIGHT
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$(DOS33) -y triangles.dsk BSAVE -a 0x300 SIER_HGR
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$(DOS33) -y triangles.dsk BSAVE -a 0x300 SIER_MOVERIGHT
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$(DOS33) -y triangles.dsk BSAVE -a 0x300 SIER_HPLOT
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$(DOS33) -y triangles.dsk BSAVE -a 0x300 RAINBOW_SQUARES
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###
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@ -57,6 +59,24 @@ SIER_HGR: sier_hgr.o
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sier_hgr.o: sier_hgr.s
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ca65 -o sier_hgr.o sier_hgr.s -l sier_hgr.lst
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###
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SIER_HPLOT: sier_hplot.o
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ld65 -o SIER_HPLOT sier_hplot.o -C $(LINKER_SCRIPTS)/apple2_300.inc
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sier_hplot.o: sier_hplot.s
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ca65 -o sier_hplot.o sier_hplot.s -l sier_hplot.lst
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###
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SIER_MOVERIGHT: sier_moveright.o
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ld65 -o SIER_MOVERIGHT sier_moveright.o -C $(LINKER_SCRIPTS)/apple2_300.inc
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sier_moveright.o: sier_moveright.s
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ca65 -o sier_moveright.o sier_moveright.s -l sier_moveright.lst
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###
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RAINBOW_SQUARES: rainbow_squares.o
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@ -98,4 +118,5 @@ move_right.o: move_right.s
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clean:
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rm -f *~ *.o *.lst HELLO TINY_TRIANGLES XOR MOD9 MOD9_64 WRITING \
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MOVE_RIGHT SIER_HGR RAINBOW_SQUARES
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MOVE_RIGHT SIER_HGR SIER_HPLOT SIER_MOVERIGHT \
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RAINBOW_SQUARES
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@ -23,21 +23,24 @@
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; zero page
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HGR_BITS = $1C
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GBASL = $26
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GBASH = $27
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MASK = $2E
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COLOR = $30
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HGR_HMASK = $30
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HGR_X = $E0
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HGR_Y = $E2
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HGR_COLOR = $E4
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;XX = $F7
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SAVEX = $F7
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XX_TH = $F8
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XX_TL = $F9
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;YY = $FA
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YY = $FA
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YY_TH = $FB
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YY_TL = $FC
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;T_L = $FD
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;T_H = $FE
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T_L = $FD
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T_H = $FE
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SAVED = $FF
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; Soft switches
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@ -49,10 +52,18 @@ LORES = $C056 ; Enable LORES graphics
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; ROM routines
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HGR = $F3E2
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HGR2 = $F3D8
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HPLOT0 = $F457
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PLOT1 = $F80E ;; PLOT at (GBASL),Y (need MASK to be $0f or $f0)
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GBASCALC= $F847 ;; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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SETGR = $FB40
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HPOSN = $F411
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HPLOT0 = $F457
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HPLOT1 = $F45A ; skip the HPOSN call
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COLOR_SHIFT = $F47E ; shift color for odd/even Y (0..7 or 7..13)
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MOVE_RIGHT = $F48A ; move next plot location one to the right
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MOVE_DOWN = $F504 ; clc at f504, needed?
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; f505 is applesoft entry point but assumes c?
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; move next plot location one to the right
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; note moveright/movedown respect HGR_PAGE
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COLORTBL = $F6F6
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;.zeropage
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@ -65,19 +76,29 @@ sier:
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jsr HGR2 ; set FULLGR, sets A=0
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; lda #0 ; start with multiplier 0
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; sta T_L
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; sta T_H
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lda #0 ; start with multiplier 0
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sta T_L
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sta T_H
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sier_outer:
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ldy #$40
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sty GBASH
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ldy #0 ; YY starts at 0
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sty YY
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sty GBASL
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sty YY_TL
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sty YY_TH
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sier_yloop:
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ldy #0 ; y is x/7
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lda #$FF
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sta HGR_HMASK
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; calc YY_T (8.8 fixed point add)
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; save space by skipping clc as it's only a slight variation w/o
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; clc
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@ -88,29 +109,6 @@ sier_yloop:
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adc T_H
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sta YY_TH
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; txa ; YY ; plot call needs Y/2
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; lsr
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; php
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; bcc even_mask
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; ldy #$f0
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; .byte $2C ; bit hack
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;even_mask:
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; ldy #$0f
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; sty MASK
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; jsr GBASCALC ; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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; lda GBASH
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;draw_page_smc:
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; adc #0
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; sta GBASH ; adjust for PAGE1/PAGE2 ($400/$800)
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; plp
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; jsr $f806 ; trick to calculate MASK by jumping
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; into middle of PLOT routine
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; reset XX to 0
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ldx #0 ; XX
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@ -124,63 +122,63 @@ sier_xloop:
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; SAVED = XX+(Y*T)
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; clc
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txa ; XX
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adc YY_TH
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sta SAVED
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txa ; XX ; 2
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adc YY_TH ; 3
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sta SAVED ; 3
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; calc XX*T
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; clc
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lda XX_TL
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adc T_L
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sta XX_TL
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lda XX_TH
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adc T_H
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sta XX_TH
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lda XX_TL ; 3
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adc T_L ; 3
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sta XX_TL ; 3
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lda XX_TH ; 3
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adc T_H ; 3
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sta XX_TH ; 3
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; calc (YY-X_T)
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tya ; lda YY
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sec
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sbc XX_TH
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lda YY ; 3
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sec ; 2
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sbc XX_TH ; 3
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; want (YY-(XX*T)) & (XX+(YY*T)
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and SAVED
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and SAVED ; 3
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;============
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; 37
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and #$f0
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and #$f0 ; 2
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beq white
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black:
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lda #00 ; black
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lda #0 ; black
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.byte $2C ; bit trick
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white:
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lda #$ff ; green
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sta HGR_COLOR
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lda #$ff ; white
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color_ready:
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sta HGR_BITS
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tya ; YY in A
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ldy #0
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; XX in X
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no_shift:
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jsr HPLOT0 ; plot at (Y,X), (A)
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; at begin, stores A to HGR_Y
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; X to HGR_X and Y to HGR_X+1
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; destroys X,Y,A
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; Y is XX/7
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jsr HPLOT1 ; plot at current position
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jsr MOVE_RIGHT ; move current position right (trashes A)
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ldy HGR_Y
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ldx HGR_X
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inx ; XX
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cpx #255
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;==================================
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inx
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bne sier_xloop
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iny ; YY
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;==================================
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jsr MOVE_DOWN ; X/Y left alone
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inc YY ; repeat until Y=192
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ldy YY
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cpy #192
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bne sier_yloop
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; inc T
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; clc
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lda T_L
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@ -194,21 +192,10 @@ no_carry:
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; speed up the zoom as it goes
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inc blah_smc+1
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; x is 48
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;flip_pages:
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; lda draw_page_smc+1 ; DRAW_PAGE
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; beq done_page
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; inx
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;done_page:
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; X=48 ($30) PAGE1=$C054-$30=$C024
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; ldy $C024,X ; set display page to PAGE1 or PAGE2
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; eor #$4 ; flip draw page between $400/$800
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; sta draw_page_smc+1 ; DRAW_PAGE
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; TODO if frame rate ever gets fast enough
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jmp sier_outer ; what can we branch on?
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T_L: .byte $00
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T_H: .byte $00
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@ -0,0 +1,214 @@
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; sierpinski-like demo
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; based on the code from Hellmood's Memories demo
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; by Vince `deater` Weaver <vince@deater.net>
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; the simple sierpinski you more or less just plot
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; X AND Y
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; Hellmood's you plot something more or less like
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; COLOR = ( (Y-(X*T)) & (X+(Y*T) ) & 0xf0
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; where T is an incrementing frame value
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; to get speed on 6502/Apple II we change the multiplies to
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; a series of 16-bit 8.8 fixed point adds
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; TODO:
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; HPLOT timing
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; MOVERIGHT timing
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; MOVERIGHT MOVEDOWN timing
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; LOOKUP TABLE timing
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; zero page
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HGR_BITS = $1C
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GBASH = $27
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MASK = $2E
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COLOR = $30
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HGR_X = $E0
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HGR_Y = $E2
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HGR_COLOR = $E4
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;XX = $F7
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XX_TH = $F8
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XX_TL = $F9
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;YY = $FA
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YY_TH = $FB
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YY_TL = $FC
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;T_L = $FD
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;T_H = $FE
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SAVED = $FF
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; Soft switches
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FULLGR = $C052
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PAGE1 = $C054
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PAGE2 = $C055
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LORES = $C056 ; Enable LORES graphics
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; ROM routines
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HGR = $F3E2
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HGR2 = $F3D8
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HPLOT0 = $F457
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PLOT1 = $F80E ;; PLOT at (GBASL),Y (need MASK to be $0f or $f0)
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GBASCALC= $F847 ;; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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SETGR = $FB40
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;.zeropage
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;.globalzp T_L,T_H
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;================================
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; Clear screen and setup graphics
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;================================
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sier:
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jsr HGR2 ; set FULLGR, sets A=0
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; lda #0 ; start with multiplier 0
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; sta T_L
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; sta T_H
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sier_outer:
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ldy #0 ; YY starts at 0
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sty YY_TL
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sty YY_TH
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sier_yloop:
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; calc YY_T (8.8 fixed point add)
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; save space by skipping clc as it's only a slight variation w/o
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; clc
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lda YY_TL
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adc T_L
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sta YY_TL
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lda YY_TH
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adc T_H
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sta YY_TH
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; txa ; YY ; plot call needs Y/2
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; lsr
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; php
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; bcc even_mask
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; ldy #$f0
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; .byte $2C ; bit hack
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;even_mask:
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; ldy #$0f
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; sty MASK
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; jsr GBASCALC ; take Y-coord/2 in A, put address in GBASL/H ( a trashed, C clear)
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; lda GBASH
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;draw_page_smc:
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; adc #0
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; sta GBASH ; adjust for PAGE1/PAGE2 ($400/$800)
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; plp
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; jsr $f806 ; trick to calculate MASK by jumping
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; into middle of PLOT routine
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; reset XX to 0
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ldx #0 ; XX
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stx XX_TL
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stx XX_TH
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sier_xloop:
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; want (YY-(XX*T)) & (XX+(YY*T)
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; SAVED = XX+(Y*T)
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; clc
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txa ; XX
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adc YY_TH
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sta SAVED
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; calc XX*T
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; clc
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lda XX_TL
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adc T_L
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sta XX_TL
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lda XX_TH
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adc T_H
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sta XX_TH
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; calc (YY-X_T)
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tya ; lda YY
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sec
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sbc XX_TH
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; want (YY-(XX*T)) & (XX+(YY*T)
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and SAVED
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and #$f0
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beq white
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black:
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lda #00 ; black
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.byte $2C ; bit trick
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white:
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lda #$ff ; green
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sta HGR_COLOR
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tya ; YY in A
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ldy #0
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; XX in X
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jsr HPLOT0 ; plot at (Y,X), (A)
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; at begin, stores A to HGR_Y
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; X to HGR_X and Y to HGR_X+1
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; destroys X,Y,A
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; Y is XX/7
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ldy HGR_Y
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ldx HGR_X
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inx ; XX
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cpx #255
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bne sier_xloop
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iny ; YY
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cpy #192
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bne sier_yloop
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; inc T
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; clc
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lda T_L
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blah_smc:
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adc #1
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sta T_L
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bcc no_carry
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inc T_H
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no_carry:
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; speed up the zoom as it goes
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inc blah_smc+1
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; x is 48
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;flip_pages:
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; lda draw_page_smc+1 ; DRAW_PAGE
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; beq done_page
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; inx
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;done_page:
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; X=48 ($30) PAGE1=$C054-$30=$C024
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; ldy $C024,X ; set display page to PAGE1 or PAGE2
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; eor #$4 ; flip draw page between $400/$800
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; sta draw_page_smc+1 ; DRAW_PAGE
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jmp sier_outer ; what can we branch on?
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T_L: .byte $00
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T_H: .byte $00
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@ -0,0 +1,228 @@
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; sierpinski-like demo
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; based on the code from Hellmood's Memories demo
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||||
|
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; by Vince `deater` Weaver <vince@deater.net>
|
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|
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; the simple sierpinski you more or less just plot
|
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; X AND Y
|
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|
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; Hellmood's you plot something more or less like
|
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; COLOR = ( (Y-(X*T)) & (X+(Y*T) ) & 0xf0
|
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; where T is an incrementing frame value
|
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|
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; to get speed on 6502/Apple II we change the multiplies to
|
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; a series of 16-bit 8.8 fixed point adds
|
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|
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; TODO:
|
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; HPLOT timing
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; MOVERIGHT timing
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; MOVERIGHT MOVEDOWN timing
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; LOOKUP TABLE timing
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; zero page
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HGR_BITS = $1C
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GBASH = $27
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MASK = $2E
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COLOR = $30
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HGR_X = $E0
|
||||
HGR_Y = $E2
|
||||
HGR_COLOR = $E4
|
||||
|
||||
|
||||
SAVEX = $F7
|
||||
XX_TH = $F8
|
||||
XX_TL = $F9
|
||||
YY = $FA
|
||||
YY_TH = $FB
|
||||
YY_TL = $FC
|
||||
;T_L = $FD
|
||||
;T_H = $FE
|
||||
SAVED = $FF
|
||||
|
||||
; Soft switches
|
||||
FULLGR = $C052
|
||||
PAGE1 = $C054
|
||||
PAGE2 = $C055
|
||||
LORES = $C056 ; Enable LORES graphics
|
||||
|
||||
; ROM routines
|
||||
HGR = $F3E2
|
||||
HGR2 = $F3D8
|
||||
HPOSN = $F411
|
||||
HPLOT0 = $F457
|
||||
HPLOT1 = $F45A ; skip the HPOSN call
|
||||
COLOR_SHIFT = $F47E ; shift color for odd/even Y (0..7 or 7..13)
|
||||
MOVE_RIGHT = $F48A ; move next plot location one to the right
|
||||
|
||||
COLORTBL = $F6F6
|
||||
|
||||
|
||||
;.zeropage
|
||||
;.globalzp T_L,T_H
|
||||
|
||||
;================================
|
||||
; Clear screen and setup graphics
|
||||
;================================
|
||||
sier:
|
||||
jsr HGR2 ; set FULLGR, sets A=0
|
||||
|
||||
|
||||
; lda #0 ; start with multiplier 0
|
||||
; sta T_L
|
||||
; sta T_H
|
||||
|
||||
sier_outer:
|
||||
|
||||
ldy #0 ; YY starts at 0
|
||||
sty YY
|
||||
|
||||
sty YY_TL
|
||||
sty YY_TH
|
||||
|
||||
sier_yloop:
|
||||
|
||||
; calc YY_T (8.8 fixed point add)
|
||||
; save space by skipping clc as it's only a slight variation w/o
|
||||
; clc
|
||||
lda YY_TL
|
||||
adc T_L
|
||||
sta YY_TL
|
||||
lda YY_TH
|
||||
adc T_H
|
||||
sta YY_TH
|
||||
|
||||
; XX in X
|
||||
; YY in YY
|
||||
|
||||
ldy #0
|
||||
ldx #0 ; XX = 0
|
||||
lda YY ; Y co-ord
|
||||
jsr HPOSN ; set cursor position to (Y,X), (A)
|
||||
|
||||
; ldy HGR_Y
|
||||
|
||||
; lda GBASH
|
||||
;draw_page_smc:
|
||||
; adc #0
|
||||
; sta GBASH ; adjust for PAGE1/PAGE2 ($400/$800)
|
||||
|
||||
; plp
|
||||
; jsr $f806 ; trick to calculate MASK by jumping
|
||||
; into middle of PLOT routine
|
||||
|
||||
; reset XX to 0
|
||||
|
||||
ldx #0 ; XX
|
||||
stx XX_TL
|
||||
stx XX_TH
|
||||
|
||||
sier_xloop:
|
||||
|
||||
stx SAVEX
|
||||
|
||||
; want (YY-(XX*T)) & (XX+(YY*T)
|
||||
|
||||
|
||||
; SAVED = XX+(Y*T)
|
||||
; clc
|
||||
txa ; XX
|
||||
adc YY_TH
|
||||
sta SAVED
|
||||
|
||||
|
||||
; calc XX*T
|
||||
; clc
|
||||
lda XX_TL
|
||||
adc T_L
|
||||
sta XX_TL
|
||||
lda XX_TH
|
||||
adc T_H
|
||||
sta XX_TH
|
||||
|
||||
|
||||
; calc (YY-X_T)
|
||||
lda YY
|
||||
sec
|
||||
sbc XX_TH
|
||||
|
||||
; want (YY-(XX*T)) & (XX+(YY*T)
|
||||
|
||||
and SAVED
|
||||
|
||||
and #$f0
|
||||
|
||||
beq white
|
||||
black:
|
||||
lda #0 ; black
|
||||
.byte $2C ; bit trick
|
||||
white:
|
||||
lda #$ff ; white
|
||||
|
||||
color_ready:
|
||||
; tax
|
||||
|
||||
; tya
|
||||
; lsr ; check even or odd
|
||||
; php
|
||||
|
||||
; lda COLORTBL,X
|
||||
sta HGR_BITS
|
||||
|
||||
; plp
|
||||
; bcc no_shift
|
||||
|
||||
; jsr COLOR_SHIFT ; if odd then color shift
|
||||
|
||||
no_shift:
|
||||
|
||||
jsr HPLOT1 ; plot at current position
|
||||
|
||||
jsr MOVE_RIGHT ; move current position right (trashes A)
|
||||
|
||||
ldx SAVEX ; restore X
|
||||
|
||||
|
||||
;==================================
|
||||
inx ; XX
|
||||
bne sier_xloop
|
||||
|
||||
;==================================
|
||||
inc YY ; repeat until Y=192
|
||||
ldy YY
|
||||
cpy #192
|
||||
bne sier_yloop
|
||||
|
||||
|
||||
; inc T
|
||||
; clc
|
||||
lda T_L
|
||||
blah_smc:
|
||||
adc #1
|
||||
sta T_L
|
||||
bcc no_carry
|
||||
inc T_H
|
||||
no_carry:
|
||||
|
||||
; speed up the zoom as it goes
|
||||
inc blah_smc+1
|
||||
|
||||
|
||||
; x is 48
|
||||
;flip_pages:
|
||||
; lda draw_page_smc+1 ; DRAW_PAGE
|
||||
; beq done_page
|
||||
; inx
|
||||
;done_page:
|
||||
; X=48 ($30) PAGE1=$C054-$30=$C024
|
||||
; ldy $C024,X ; set display page to PAGE1 or PAGE2
|
||||
|
||||
; eor #$4 ; flip draw page between $400/$800
|
||||
; sta draw_page_smc+1 ; DRAW_PAGE
|
||||
|
||||
jmp sier_outer ; what can we branch on?
|
||||
|
||||
T_L: .byte $00
|
||||
T_H: .byte $00
|
||||
|
||||
Loading…
Reference in New Issue