demos: update
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Vince Weaver
parent
66982968c1
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c033d0f2ff
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CALL -151
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E7: 20 D8 F3 C8 84 E7 A0 00 A2 8C A9 60 20 11 F4 2C
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F7: 30 C0 A9 00 A8 20 5D F6 E6 FA 4C ED 00
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E7G
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@ -1,4 +1,4 @@
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CALL -151
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B9: 78 2c 50 c0 20 f0 fd 50
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B9: 78 2C 50 C0 20 F0 FD 50
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B9G
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include ../../../Makefile.inc
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DOS33 = ../../../utils/dos33fs-utils/dos33
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TOKENIZE = ../../../utils/asoft_basic-utils/tokenize_asoft
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EMPTYDISK = ../../../empty_disk/empty.dsk
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all: diamond_xdraw16.dsk
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diamond_xdraw16.dsk: HELLO DIAMOND_XDRAW
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cp $(EMPTYDISK) diamond_xdraw16.dsk
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$(DOS33) -y diamond_xdraw16.dsk SAVE A HELLO
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$(DOS33) -y diamond_xdraw16.dsk BSAVE -a 0xE7 DIAMOND_XDRAW
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###
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submit: xdraw16.zip
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xdraw16.zip: DIAMOND_XDRAW diamond_xdraw.s file_id.diz diamond_xdraw16.dsk
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mkdir -p lovebyte2021_diamond_xdraw16
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cp DIAMOND_XDRAW ./lovebyte2021_diamond_xdraw16
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cp diamond_xdraw.s ./lovebyte2021_diamond_xdraw16
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cp file_id.diz ./lovebyte2021_diamond_xdraw16
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cp diamond_xdraw16.dsk ./lovebyte2021_diamond_xdraw16
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cp diamond_xdraw_720p.mp4 ./lovebyte2021_diamond_xdraw16
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zip -r xdraw16.zip lovebyte2021_diamond_xdraw16
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####
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####
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HELLO: hello.bas
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$(TOKENIZE) < hello.bas > HELLO
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###
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DIAMOND_XDRAW: diamond_xdraw.o
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ld65 -o DIAMOND_XDRAW diamond_xdraw.o -C ./apple2_e7_zp.inc
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diamond_xdraw.o: diamond_xdraw.s
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ca65 -o diamond_xdraw.o diamond_xdraw.s -l diamond_xdraw.lst
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####
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clean:
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rm -f *~ *.o *.lst HELLO DIAMOND_XDRAW *.zip
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MEMORY {
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ZP: start = $E7, size = $90, type = rw;
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RAM: start = $E7, size = $8E00, file = %O;
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}
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SEGMENTS {
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#CODE: load = RAM, type = ro;
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#RODATA: load = RAM, type = ro;
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#DATA: load = RAM, type = rw;
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#BSS: load = RAM, type = bss, define = yes;
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ZEROPAGE: load = ZP, type = ro;
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}
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@ -0,0 +1,116 @@
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; Tiny Xdraw
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; repeatedly draws an image from an Apple II shape table
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; can arbitrarily point to any memory location as a source of these
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; some look amazing but depend on random machine state
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; to be deterministic you should probably stick to
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; $E7-$F0 (the program itself)
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; $D000-$FFFF (the ROMs)
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; shapetables are a bit complicated to explain here, but they are a
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; series of bytes ending with a $00
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; (note if you point to a zero, it will be interpreted as an
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; action not an end)
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; each byte specifies up to 3 actions, DRAW + UP DOWN LEFT RIGHT or
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; NODRAW + UP DOWN LEFT RIGHT
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; It is vector scaling with SCALE we hardcode to $20 and rotation
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; which gets set to 0 after the first iteration, (which is
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; why the first shape has arbitrary rotation and gets left)
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; we are xdrawing so it will XOR with the current pixels on the screen
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; NUP=0 UP=4 zz yyy xxx , does xxx yyy zz
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; NRT=1 RT=5
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; NDN=2 DN=6
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; NLT=3 LT=7
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; zero page locations
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HGR_SHAPE = $1A
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HGR_SHAPE2 = $1B
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HGR_BITS = $1C
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GBASL = $26
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GBASH = $27
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A5H = $45
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XREG = $46
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YREG = $47
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; C0-CF should be clear
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; D0-DF?? D0-D5 = HGR scratch?
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HGR_DX = $D0 ; HGLIN
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HGR_DX2 = $D1 ; HGLIN
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HGR_DY = $D2 ; HGLIN
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HGR_QUADRANT = $D3
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HGR_E = $D4
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HGR_E2 = $D5
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HGR_X = $E0
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HGR_X2 = $E1
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HGR_Y = $E2
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HGR_COLOR = $E4
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HGR_HORIZ = $E5
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HGR_SCALE = $E7
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HGR_SHAPE_TABLE = $E8
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HGR_SHAPE_TABLE2= $E9
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HGR_COLLISIONS = $EA
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HGR_ROTATION = $F9
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FRAME = $FC
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XPOS = $FD
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YPOS = $FF
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; ROM calls
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HGR2 = $F3D8
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HGR = $F3E2
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HPOSN = $F411
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XDRAW0 = $F65D
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XDRAW1 = $F661
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RESTORE = $FF3F
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.zeropage
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.globalzp rot_smc
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tiny_xdraw:
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jsr HGR2 ; Hi-res, full screen ; 3
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; Y=0, A=0 after this call
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; we load at $E7 which is HGR_SCALE, so HGR_SCALE gets
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; the value of the above JSR instruction ($20)
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; A and Y are 0 here.
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; X is left behind by the boot process?
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tax
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jsr HPOSN ; set screen position to X= (y,x) Y=(a)
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; saves X,Y,A to zero page
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; after Y= orig X/7
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; A and X are ??
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tiny_loop:
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; values for shape table
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; Y X
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; F0 01 = xdraw16 from lovebyte 2021
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; E726 = interesting
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; E728 = moving bars
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; E72A = moving lines
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; E7E7 = sorta OK
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lda #$e7
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tax
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tay
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; ldx #$e7 ; point to bottom byte of shape address
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; ldy #$e7 ; point to top byte of shape address
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; ROT in A
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; this will be 0 2nd time through loop, arbitrary otherwise
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; lda #0 ; ROT=0
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jsr XDRAW0 ; XDRAW 1 AT X,Y
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; Both A and X are 0 at exit
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; Z flag set on exit
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; Y varies
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beq tiny_loop ; bra
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Binary file not shown.
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@ -0,0 +1,5 @@
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Diamond Xdraw
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-
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Hi-res Xdraw Pattern
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16-byte Intro for Apple II, Lovebyte 2022
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by Deater / dSr
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5 HOME
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10 PRINT "DIAMOND XDRAW - A 16 BYTE APPLE II INTRO"
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15 PRINT " BY DEATER / DSR"
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20 PRINT CHR$(4)"CATALOG"
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25 PRINT:PRINT "PRESS ANY KEY TO 'BRUN TINY_DIAMOND'"
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30 GET A$
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35 PRINT
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40 PRINT CHR$(4)"BRUN TINY_DIAMOND"
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@ -0,0 +1,5 @@
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CALL -151
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E7: 20 D8 F3 AA 20 11 F4 A0 F0 A9 05 20 5D F6 F0 F7
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E7G
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