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https://github.com/deater/dos33fsprogs.git
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interlace: rasterbars
This commit is contained in:
Vince Weaver
parent
4dfd93795a
commit
bf90f73077
@ -7,9 +7,10 @@ PNG_TO_40x48D = ../gr-utils/png_to_40x48d
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all: interlace.dsk
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interlace.dsk: INTERLACE HELLO
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interlace.dsk: INTERLACE RASTERBARS HELLO
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$(DOS33) -y interlace.dsk SAVE A HELLO
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$(DOS33) -y interlace.dsk BSAVE -a 0x1000 INTERLACE
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$(DOS33) -y interlace.dsk BSAVE -a 0x1000 RASTERBARS
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####
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@ -28,6 +29,16 @@ interlace.o: interlace.s gr_copy.s \
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####
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RASTERBARS: rasterbars.o
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ld65 -o RASTERBARS rasterbars.o -C ../linker_scripts/apple2_1000.inc
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rasterbars.o: rasterbars.s gr_copy.s \
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rasterbars_screen.s rasterbars_table.s k_40_48d.inc
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ca65 -o rasterbars.o rasterbars.s -l rasterbars.lst
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####
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k_40_48d.inc: k_40_48d.png
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$(PNG_TO_40x48D) asm k_40_48d.png k > k_40_48d.inc
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@ -38,4 +49,4 @@ install:
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clean:
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rm -f *~ *.o *.lst *.inc INTERLACE HELLO
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rm -f *~ *.o *.lst *.inc INTERLACE RASTERBARS HELLO
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@ -1,2 +1,2 @@
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10 PRINT "INTERLACE V0.1"
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100 PRINT CHR$ (4)"BRUN INTERLACE"
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100 PRINT CHR$ (4)"BRUN RASTERBARS"
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305
interlace_demo/rasterbars.s
Normal file
305
interlace_demo/rasterbars.s
Normal file
@ -0,0 +1,305 @@
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; Uses the 40x48d page1/page2 every-1-scanline pageflip mode
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; self modifying code to get some extra colors (pseudo 40x192 mode)
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; by deater (Vince Weaver) <vince@deater.net>
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; Zero Page
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FRAMEBUFFER = $00 ; $00 - $0F
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YPOS = $10
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YPOS_SIN = $11
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CH = $24
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CV = $25
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GBASL = $26
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GBASH = $27
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BASL = $28
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BASH = $29
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FRAME = $60
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BLARGH = $69
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DRAW_PAGE = $EE
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LASTKEY = $F1
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PADDLE_STATUS = $F2
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TEMP = $FA
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WHICH = $FB
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; Soft Switches
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KEYPRESS= $C000
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KEYRESET= $C010
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SET_GR = $C050 ; Enable graphics
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FULLGR = $C052 ; Full screen, no text
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PAGE0 = $C054 ; Page0
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PAGE1 = $C055 ; Page1
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LORES = $C056 ; Enable LORES graphics
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PADDLE_BUTTON0 = $C061
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PADDL0 = $C064
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PTRIG = $C070
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; ROM routines
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TEXT = $FB36 ;; Set text mode
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HOME = $FC58 ;; Clear the text screen
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WAIT = $FCA8 ;; delay 1/2(26+27A+5A^2) us
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start_rasterbars:
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;===================
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; init screen
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jsr TEXT
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jsr HOME
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bit KEYRESET
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;===================
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; init vars
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lda #0
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sta DRAW_PAGE
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;=============================
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; Load graphic page0
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; lda #$0c
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; sta BASH
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; lda #$00
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; sta BASL ; load image to $c00
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; lda WHICH
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; asl
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; asl ; which*4
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; tay
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; lda pictures,Y
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; sta GBASL
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; lda pictures+1,Y
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; sta GBASH
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; jsr load_rle_gr
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; lda #4
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; sta DRAW_PAGE
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; jsr gr_copy_to_current ; copy to page1
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; ; GR part
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; bit PAGE1
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; bit LORES ; 4
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; bit SET_GR ; 4
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; bit FULLGR ; 4
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; jsr wait_until_keypressed
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;=============================
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; Load graphic page1
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; lda #$0c
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; sta BASH
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; lda #$00
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; sta BASL ; load image to $c00
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; lda WHICH
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; asl
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; asl ; which*4
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; tay
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; lda pictures+2,Y
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; sta GBASL
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; lda pictures+3,Y
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; sta GBASH
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; jsr load_rle_gr
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; lda #0
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; sta DRAW_PAGE
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; jsr gr_copy_to_current
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; ; GR part
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; bit PAGE0
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; jsr wait_until_keypressed
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;==============================
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; setup graphics for vapor lock
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;==============================
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jsr vapor_lock
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; vapor lock returns with us at beginning of hsync in line
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; 114 (7410 cycles), so with 5070 lines to go
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; GR part
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bit LORES ; 4
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bit SET_GR ; 4
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bit FULLGR ; 4
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jsr gr_copy_to_current ; 6+ 9292
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; 5070 + 4550 = 9620
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; 9292
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; 12
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; 6
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; ====
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; 310
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; - 3 for jmp
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; 307
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; Try X=9 Y=6 cycles=307
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ldy #6 ; 2
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loopA: ldx #9 ; 2
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loopB: dex ; 2
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bne loopB ; 2nt/3
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dey ; 2
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bne loopA ; 2nt/3
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jmp display_loop ; 3
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.align $100
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;================================================
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; Display Loop
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;================================================
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; each scan line 65 cycles
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; 1 cycle each byte (40cycles) + 25 for horizontal
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; Total of 12480 cycles to draw screen
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; Vertical blank = 4550 cycles (70 scan lines)
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; Total of 17030 cycles to get back to where was
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; We want to alternate between page1 and page2 every 65 cycles
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; vblank = 4550 cycles to do scrolling
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; want colors 01234567
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; line 0: $X0 to $800
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; line 1: $X1 to $400
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; line 2: $X2
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; line 3: $X3
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; line 4: $4X
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; line 5: $5X
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; line 6: $6X
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; line 7: $7X
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display_loop:
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.include "rasterbars_screen.s"
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;======================================================
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; We have 4550 cycles in the vblank, use them wisely
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;======================================================
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; do_nothing should be
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; 4550
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; -6
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; -10
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;=============
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; 4534
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jsr do_nothing ; 6
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lda KEYPRESS ; 4
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bpl no_keypress ; 3
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jmp display_loop
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no_keypress:
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jmp display_loop ; 3
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;=================================
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; do nothing
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;=================================
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; and take 4534-6 = 4528 cycles to do it
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; blah, current code the tight loops are right at a page boundary
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do_nothing:
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; want 4528-12=4516
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; Try X=4 Y=174 cycles=4525 R3 -3 X loops
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; Try X=3 Y=215 cycles=4516
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nop ; 2
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nop ; 2
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nop ; 2
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nop ; 2
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nop ; 2
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nop ; 2
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ldy #215 ; 2
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loop1: ldx #3 ; 2
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loop2: dex ; 2
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bne loop2 ; 2nt/3
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dey ; 2
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bne loop1 ; 2nt/3
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rts ; 6
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;==================================
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; HLINE
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;==================================
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; Color in A
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; Y has which line
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hline:
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pha ; 3
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ldx gr_offsets,y ; 4+
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stx hline_loop+1 ; 4
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lda gr_offsets+1,y ; 4+
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clc ; 2
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adc DRAW_PAGE ; 3
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sta hline_loop+2 ; 4
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pla ; 4
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ldx #39 ; 2
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hline_loop:
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sta $5d0,X ; 38 ; 5
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dex ; 2
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bpl hline_loop ; 2nt/3
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rts ; 6
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;==========================
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; Clear gr screen
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;==========================
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; Color in A
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clear_gr:
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ldy #46
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clear_page_loop:
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jsr hline
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dey
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dey
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bpl clear_page_loop
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rts
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gr_offsets:
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.word $400,$480,$500,$580,$600,$680,$700,$780
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.word $428,$4a8,$528,$5a8,$628,$6a8,$728,$7a8
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.word $450,$4d0,$550,$5d0,$650,$6d0,$750,$7d0
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.include "../asm_routines/gr_unrle.s"
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.include "../asm_routines/keypress.s"
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.align $100
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.include "rasterbars_table.s"
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.include "gr_copy.s"
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.include "vapor_lock.s"
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.include "delay_a.s"
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pictures:
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.word k_low,k_high
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.include "k_40_48d.inc"
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krg:
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.byte $0
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3647
interlace_demo/rasterbars_screen.s
Normal file
3647
interlace_demo/rasterbars_screen.s
Normal file
File diff suppressed because it is too large
Load Diff
34
interlace_demo/rasterbars_table.s
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34
interlace_demo/rasterbars_table.s
Normal file
@ -0,0 +1,34 @@
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y_lookup_h:
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.byte >smc032,>smc033,>smc034,>smc035,>smc036,>smc037,>smc038,>smc039
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.byte >smc040,>smc041,>smc042,>smc043,>smc044,>smc045,>smc046,>smc047
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.byte >smc048,>smc049,>smc050,>smc051,>smc052,>smc053,>smc054,>smc055
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.byte >smc056,>smc057,>smc058,>smc059,>smc060,>smc061,>smc062,>smc063
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.byte >smc064,>smc065,>smc066,>smc067,>smc068,>smc069,>smc070,>smc071
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.byte >smc072,>smc073,>smc074,>smc075,>smc076,>smc077,>smc078,>smc079
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.byte >smc080,>smc081,>smc082,>smc083,>smc084,>smc085,>smc086,>smc087
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.byte >smc088,>smc089,>smc090,>smc091,>smc092,>smc093,>smc094,>smc095
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.byte >smc096,>smc097,>smc098,>smc099,>smc100,>smc101,>smc102,>smc103
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.byte >smc104,>smc105,>smc106,>smc107,>smc108,>smc109,>smc110,>smc111
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.byte >smc112,>smc113,>smc114,>smc115,>smc116,>smc117,>smc118,>smc119
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.byte >smc120,>smc121,>smc122,>smc123,>smc124,>smc125,>smc126,>smc127
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.byte >smc128,>smc129,>smc130,>smc131,>smc132,>smc133,>smc134,>smc135
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.byte >smc136,>smc137,>smc138,>smc139,>smc140,>smc141,>smc142,>smc143
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.byte >smc144,>smc145,>smc146,>smc147,>smc148,>smc149,>smc150,>smc151
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.byte >smc152,>smc153,>smc154,>smc155,>smc156,>smc157,>smc158,>smc159
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y_lookup_l:
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.byte <smc032,<smc033,<smc034,<smc035,<smc036,<smc037,<smc038,<smc039
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.byte <smc040,<smc041,<smc042,<smc043,<smc044,<smc045,<smc046,<smc047
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.byte <smc048,<smc049,<smc050,<smc051,<smc052,<smc053,<smc054,<smc055
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.byte <smc056,<smc057,<smc058,<smc059,<smc060,<smc061,<smc062,<smc063
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.byte <smc064,<smc065,<smc066,<smc067,<smc068,<smc069,<smc070,<smc071
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.byte <smc072,<smc073,<smc074,<smc075,<smc076,<smc077,<smc078,<smc079
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.byte <smc080,<smc081,<smc082,<smc083,<smc084,<smc085,<smc086,<smc087
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.byte <smc088,<smc089,<smc090,<smc091,<smc092,<smc093,<smc094,<smc095
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.byte <smc096,<smc097,<smc098,<smc099,<smc100,<smc101,<smc102,<smc103
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.byte <smc104,<smc105,<smc106,<smc107,<smc108,<smc109,<smc110,<smc111
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.byte <smc112,<smc113,<smc114,<smc115,<smc116,<smc117,<smc118,<smc119
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.byte <smc120,<smc121,<smc122,<smc123,<smc124,<smc125,<smc126,<smc127
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.byte <smc128,<smc129,<smc130,<smc131,<smc132,<smc133,<smc134,<smc135
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.byte <smc136,<smc137,<smc138,<smc139,<smc140,<smc141,<smc142,<smc143
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.byte <smc144,<smc145,<smc146,<smc147,<smc148,<smc149,<smc150,<smc151
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.byte <smc152,<smc153,<smc154,<smc155,<smc156,<smc157,<smc158,<smc159
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