c64: get it small enough
This commit is contained in:
Vince Weaver
parent
666d2a6379
commit
a9219f0d41
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@ -11,7 +11,8 @@ appleiibot.dsk: E2.BAS FLAME.BAS FLAME2.BAS \
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RASTER4.BAS RASTER5.BAS PUMPKIN.BAS PUMPKIN_SMALL.BAS LADY.BAS \
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A2.BAS FOURAM.BAS FLOPPY.BAS QR.BAS A2_4EVER.BAS RLE.BAS RLE2.BAS \
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RLEASM.BAS HORIZON.BAS FLYER.BAS STAR.BAS HYPER.BAS FASTAR.BAS \
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FASTAR2.BAS BIN.BAS FALLING.BAS SNOW.BAS XMAS.BAS AN3.BAS PLASMA.BAS
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FASTAR2.BAS BIN.BAS FALLING.BAS SNOW.BAS XMAS.BAS AN3.BAS PLASMA.BAS \
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C64.BAS
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cp empty.dsk appleiibot.dsk
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$(DOS33) -y appleiibot.dsk BSAVE -a 0x0300 LOAD
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# $(DOS33) -y appleiibot.dsk BSAVE -a 0x0C00 FASTAR2
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@ -55,6 +56,7 @@ appleiibot.dsk: E2.BAS FLAME.BAS FLAME2.BAS \
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$(DOS33) -y appleiibot.dsk SAVE A XMAS.BAS
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$(DOS33) -y appleiibot.dsk SAVE A AN3.BAS
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$(DOS33) -y appleiibot.dsk SAVE A PLASMA.BAS
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$(DOS33) -y appleiibot.dsk SAVE A C64.BAS
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###
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@ -160,6 +162,11 @@ AN3.BAS: an3.bas
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PLASMA.BAS: plasma.bas
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$(TOKENIZE) < plasma.bas > PLASMA.BAS
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####
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C64.BAS: c64.bas
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$(TOKENIZE) < c64.bas > C64.BAS
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####
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@ -0,0 +1,2 @@
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1FORI=0TO143:POKE1013+I,4*PEEK(2126+I)-192+(PEEK(2270+I/3)-35)/4^(I-INT(I/3)*3):NEXT
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2&",clYe8jlQ0RQ`X0JhZ%NoW56F1QmZX#Vo74mU/^I16?=ZT0Z,70ki0U/Yo`7b1QbWoPo`,ac^l?4:1-?99=06=?1->0Y1-79:10389/-8900.00(02/80'02*21(38%/8%/3+-8(02.46'17S(/#G@W04,W'3#P33-3$+Z(T[7/,/UG/0VT#+M1L@W^^UM5Q
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@ -0,0 +1,45 @@
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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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LINKER_SCRIPTS = ../../../linker_scripts
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all: c64.dsk
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c64.dsk: HELLO C64.BAS C64_TINY.BAS C64
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cp empty.dsk c64.dsk
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$(DOS33) -y c64.dsk SAVE A HELLO
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$(DOS33) -y c64.dsk SAVE A C64.BAS
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$(DOS33) -y c64.dsk SAVE A C64_TINY.BAS
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$(DOS33) -y c64.dsk SAVE A C64_TINY.BAS
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$(DOS33) -y c64.dsk BSAVE -a 0x3F5 C64
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###
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HELLO: hello.bas
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$(TOKENIZE) < hello.bas > HELLO
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###
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C64: c64.o
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ld65 -o C64 c64.o -C $(LINKER_SCRIPTS)/apple2_3f5.inc
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c64.o: c64.s
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ca65 -o c64.o c64.s -l c64.lst
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###
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C64.BAS: c64.bas
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$(TOKENIZE) < c64.bas > C64.BAS
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###
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C64_TINY.BAS: c64_tiny.bas
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$(TOKENIZE) < c64_tiny.bas > C64_TINY.BAS
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###
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clean:
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rm -f *~ *.o *.lst C64.BAS C64_TINY.BAS
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@ -1,6 +1,17 @@
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; silly c64
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; needs to be 146 bytes or less
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; 147 initial, top line
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; 145 beq instead of jmp, 0 is already in Y
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; 141 inline draw
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; 146 add READY
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; 136 optimize addr calculation
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; 150 printing READY and skipping line
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; 147 get FF by decrementing 0
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; 146 move increment before the draw
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; 144 have XPOS in A at beginning of loop
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; 142 realize shapes don't have to be aligned at 5
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; needs to be 144 bytes or less
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; zero page locations
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WHICH = $00
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@ -50,50 +61,26 @@ dsr_demo:
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lda #$D5 ; color blue
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jsr HCLR_COLOR
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sty WHICH ; = 0
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dey ; $ff = white2
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sty HGR_COLOR
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lda #2
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sta HGR_SCALE
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lda #0
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sta WHICH
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;=========================
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; draw letters
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;=========================
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; LDA COLORTBL,X GET COLOR PATTERN
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lda #$ff
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sta HGR_COLOR
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lda #8
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sta YPOS
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lda #23
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sta XPOS
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; sta XPOS
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; XPOS in A coming in
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first_loop:
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lda WHICH
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tay
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lda string,Y
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clc
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adc #<shape_table
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sta shape_smc+1
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lda #>shape_table
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sta shape2_smc+1
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jsr draw
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inc WHICH
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lda XPOS
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clc
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adc #8
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sta XPOS
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cmp #(28*8)+23
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bne first_loop
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end:
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jmp end
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draw:
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@ -101,26 +88,53 @@ draw:
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; need to have co-ords set up with HPOSN
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; rotate should be in A
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; lda XPOS
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clc
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adc #8
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sta XPOS
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tax
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; setup X and Y co-ords
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ldy #0 ; XPOSH always 0 for us
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ldx XPOS
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; ldx XPOS
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lda YPOS
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jsr HPOSN ; X= (y,x) Y=(a)
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shape_smc:
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ldx #<shape_table ; point to our shape
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shape2_smc:
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ldy #>shape_table ; code fits in one page so this doesn't change
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ldy WHICH
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lda string,Y
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clc
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adc #<shape_table
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tax
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; ldx #<shape_table ; point to our shape (low)
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ldy #>shape_table ; code fits in one page, same always
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rot_smc:
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lda #0 ; set rotation
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jmp DRAW0 ; XDRAW 1 AT X,Y
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jsr DRAW0 ; XDRAW 1 AT X,Y
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; Both A and X are 0 at exit
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inc WHICH
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ldy WHICH
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lda XPOS
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cpy #28
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bne no_adjust
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sty YPOS ; want 32, 28 is close
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lda #$ff
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sta XPOS
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no_adjust:
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cpy #33
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bne first_loop
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end:
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beq end
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shape_table:
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@ -130,7 +144,7 @@ shape_table:
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.byte $3b,$24,$ad,$06,$00 ; D 3
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.byte $1f,$24,$35,$07,$00 ; R 4
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.byte $3f,$2c,$27,$2d,$00 ; E 5
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.byte $23,$24,$00,$00,$00 ; I 6
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.byte $23,$24,$00 ; I 6
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.byte $02,$00 ; space 7
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;.byte $3b,$24,$ad,$06,$00 ; 4 8
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@ -146,13 +160,14 @@ shape_table:
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string:
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; * * * * C O M M O D O R E
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.byte 10,10,10,10,35,0, 5,10,10, 5,15, 5,20,25,35
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.byte 10,10,10,10,33,0, 5,10,10, 5,15, 5,20,25,33
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; 6 4 B A S I C * * * *
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.byte 15,10,35,15,10,15,30,0, 35,10,10,10,10
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;$3c,$2c,$3c,$3f,$36,$06,$00
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;$3f,$27,$2c,$27,$2d,$05,$00
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.byte 15,10,33,15,10,15,30,0, 33,10,10,10,10
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; 28
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; R E A D Y
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.byte 20,25,10,15,30
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; 5
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@ -0,0 +1,12 @@
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MEMORY {
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ZP: start = $00, size = $1A, type = rw;
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RAM: start = $3f5, 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 = zp;
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}
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