From 1a40b7de36b9e9d3fe54c276ef84e8001cc9d47d Mon Sep 17 00:00:00 2001 From: Vince Weaver Date: Mon, 17 Sep 2018 00:44:32 -0400 Subject: [PATCH] megdemo: have simple case working --- megademo/Makefile | 10 +- megademo/apple_40_96.inc | 177 ++++++++++++++++++++++++ megademo/falling_apple.s | 287 +++++++++++++++++++++++++++++++++++++++ megademo/gr_copy.s | 58 ++++++++ megademo/megademo.s | 7 +- 5 files changed, 535 insertions(+), 4 deletions(-) create mode 100644 megademo/apple_40_96.inc create mode 100644 megademo/falling_apple.s create mode 100644 megademo/gr_copy.s diff --git a/megademo/Makefile b/megademo/Makefile index bfb425df..92bc1ab0 100644 --- a/megademo/Makefile +++ b/megademo/Makefile @@ -2,6 +2,8 @@ include ../Makefile.inc DOS33 = ../dos33fs-utils/dos33 B2D = ../bmp2dhr/b2d +PNG_TO_40x96 = ../gr-utils/png_to_40x96 + all: megademo.dsk @@ -19,12 +21,18 @@ MEGADEMO: megademo.o megademo.o: megademo.s \ zp.inc hardware.inc \ - c64_opener.s c64.img.lz4 + c64_opener.s c64.img.lz4 \ + falling_apple.s apple_40_96.inc ca65 -o megademo.o megademo.s -l megademo.lst #### +apple_40_96.inc: ./images/apple_40_96.png + $(PNG_TO_40x96) asm ./images/apple_40_96.png apple > apple_40_96.inc + +#### + c64.img.lz4: c64.img lz4 -f -16 c64.img diff --git a/megademo/apple_40_96.inc b/megademo/apple_40_96.inc new file mode 100644 index 00000000..e4338fb4 --- /dev/null +++ b/megademo/apple_40_96.inc @@ -0,0 +1,177 @@ +apple_low: .byte $28 ; ysize=48 + .byte $A8,$FF, $5F, $5A, $55, $98, $55, $D8 + .byte $55, $58, $55,$55, $58, $95, $85, $58 + .byte $55, $95, $A3,$55, $85, $5A, $A0,$12,$FF, $BF + .byte $5F, $DD, $5B, $5F, $5D, $DF, $5D + .byte $5F,$5F, $8F, $5D, $5F, $5D, $5B, $5D + .byte $FF, $D5, $59, $95, $58, $55, $A0,$13,$FF + .byte $55, $08, $55, $05, $50, $A3,$55, $58 + .byte $0A, $5D, $05, $0A,$0A, $58, $DF, $BD + .byte $DA, $5A, $59, $85, $5A, $A0,$12,$FF, $55 + .byte $08, $50, $05, $55, $A4,$5A, $55,$55, $00 + .byte $50, $05, $D5, $FA, $FF, $DA, $B5 + .byte $88, $5A, $5D, $A0,$12,$FF, $55,$55, $50, $55 + .byte $05, $65, $5A,$5A, $55,$55, $45, $55,$55, $05 + .byte $D5, $FA, $DD, $BF, $D5, $98, $55,$55 + .byte $DF, $A0,$11,$FF, $A3,$55, $50, $54, $55,$55, $05 + .byte $65, $55, $45, $55, $50, $05, $D5 + .byte $BD, $DF, $FD, $95, $58, $8B, $58 + .byte $5F, $A0,$11,$FF, $55, $05, $54, $00, $56 + .byte $A3,$55, $45, $05, $50, $55,$55, $00, $55 + .byte $DD, $FF, $5D, $55, $89, $95, $58 + .byte $5A, $A0,$11,$FF, $5D, $00, $55, $00, $A3,$55 + .byte $00, $56, $00, $55, $54, $00, $55 + .byte $85, $5D, $FA, $DD, $55, $88, $55 + .byte $90, $5F, $A0,$11,$FF, $DD, $50, $05, $50 + .byte $05, $40, $55, $05, $60, $05, $40 + .byte $05, $50, $05, $55, $DD, $BA, $DF + .byte $55, $88, $55, $90, $5D, $5A,$5A, $5F + .byte $DA, $5F,$5F, $DF, $5F, $A9,$FF, $5D, $50 + .byte $05, $50, $55, $00, $54, $05, $50 + .byte $05, $45, $00, $55, $50, $55, $DD + .byte $5F, $FF, $55, $89, $55,$55, $F5, $5A + .byte $FA, $DD, $B5, $D9, $5A, $5D, $5A + .byte $A9,$FF, $5A, $55, $05, $55, $00, $05 + .byte $40, $05, $50, $05, $50, $04, $50 + .byte $05, $D5, $5D, $DF, $FD, $5B, $5D + .byte $5B, $5D, $5B, $5A, $DD, $BB, $5D + .byte $5A,$5A, $55,$55, $FA, $A8,$FF, $FA, $5A, $DA + .byte $5D, $85, $A4,$55, $D8, $55,$55, $58, $55 + .byte $D5, $59, $DF, $FD, $55, $00, $55 + .byte $00, $50, $05, $50, $00, $55, $5A,$5A + .byte $5B, $55, $DD, $A8,$FF, $5A, $DF, $BD + .byte $8F, $5D,$5D, $5B, $5D, $5B, $5D, $FB + .byte $D5, $F5, $D8, $F5,$F5, $FD, $5B, $55 + .byte $50, $00, $05, $00, $55, $00,$00, $55,$55 + .byte $5A, $DD, $55, $FA, $A7,$FF, $5A, $DD + .byte $BB, $DD, $BA, $DD, $5F, $9D, $5A,$5A + .byte $DD, $55, $D5, $55, $D8, $BB, $D5 + .byte $5B, $5D, $55, $00, $52, $00, $55 + .byte $00, $55, $52, $05, $55, $5A, $DD + .byte $55, $FA, $A5,$FF, $5F,$5F, $DF, $FA, $FF + .byte $FA, $FB, $FD, $DB, $F5, $50, $D5 + .byte $59, $D5, $FD, $D9, $BF, $FA, $DB + .byte $BD, $DF, $A3,$55, $50, $06, $50, $55 + .byte $59, $05, $55, $DA, $5D, $DA, $5F + .byte $A3,$FF, $5F, $FF, $DF, $5D, $05, $5A,$5A + .byte $8F, $5D, $5A, $5D, $5B, $5D, $DF + .byte $BF, $5D, $FF, $DF, $5D, $FB, $DF + .byte $FD, $55,$55, $00, $50, $05, $75, $05 + .byte $55, $05, $55,$55, $DD, $BA, $DD, $5A + .byte $FF,$FF, $DF, $BF, $DA, $5D, $80, $55,$55 + .byte $85, $58, $05, $10, $05, $55, $51 + .byte $55, $00, $55, $05, $FD, $DF, $FD + .byte $DD, $5B, $58, $55, $00,$00, $50, $02 + .byte $20, $05, $00, $55, $5A,$5A, $DF, $5A + .byte $5D, $FF,$FF, $FA, $5F, $FD, $D5, $F5 + .byte $58, $5B, $55,$55, $15, $80, $58, $51 + .byte $55, $58, $85, $B0, $5A, $FF, $FD + .byte $DF, $5D, $55, $58, $55, $50, $05 + .byte $50, $05, $00, $50, $05, $50, $5F + .byte $DD, $5A, $F5, $FF,$FF, $5F,$5F, $A4,$FF, $FA + .byte $FD, $FA,$FA, $F5, $FD, $FB, $55, $D5 + .byte $F5, $F8, $FB, $DD, $FF, $DD, $5A + .byte $59, $A3,$55, $00, $55, $00, $55, $00 + .byte $55, $15, $00, $FD, $5A, $FA, $A4,$FF + .byte $F5,$F5, $A4,$5A, $5F, $BF, $A3,$5F, $A5,$FF, $FD + .byte $FF, $DF, $5D, $55, $DA, $55, $B8 + .byte $FA,$FA, $F5,$F5, $F7, $55,$55, $50, $55,$55, $AC,$FF + .byte $FA,$FA, $A3,$F5, $B5, $A4,$5A, $A3,$5F, $FA, $DD + .byte $5A, $F5, $A0,$12,$FF, $CF, $AF,$FF, $FA, $F5 + .byte $F0, $F5, $AF,$FF, $CF, $FF, $9F, $A3,$9C + .byte $FC, $FF,$FF, $C9, $CF, $C9, $FF, $C9 + .byte $CF, $C9, $FF, $C9, $CF, $C9, $FF + .byte $C9, $A3,$FF, $C9, $CF, $A4,$FF, $C9, $FF + .byte $C9, $A3,$FF, $9F, $A3,$9C, $FC, $A5,$F2, $FF,$FF + .byte $F6, $FF, $F6, $FF, $F6, $A3,$FF, $F6 + .byte $A3,$FF, $F6, $A3,$FF, $F6, $A5,$FF, $F6, $FF + .byte $F6, $A3,$FF, $A5,$F2 + .byte $A1 +apple_high: .byte $28 ; ysize=48 + .byte $A8,$FF, $5F, $8F, $5F, $A5,$5A, $8F, $BA + .byte $8F, $5A, $A3,$5F, $8F, $5F, $8F, $5F + .byte $DF, $5F, $A0,$12,$FF, $DD, $5F, $5D, $5F + .byte $9D, $5A, $5D, $5B, $9D, $FA, $5D + .byte $FA,$FA, $D5, $FD, $D5, $55, $DD, $5A + .byte $55,$55, $85, $A0,$12,$FF, $5D, $55, $95, $0D + .byte $0A,$0A, $5A, $5D, $5A,$5A, $5B, $55, $05 + .byte $5A, $59, $B5, $DF, $FF, $DF, $58 + .byte $85, $58, $A0,$12,$FF, $5D, $55,$55, $50, $00 + .byte $55, $7A, $A3,$5A, $A4,$55, $00, $55, $DF + .byte $DD, $5F, $D9, $55, $5A,$5A, $A0,$11,$FF, $DF + .byte $5D, $00, $45, $05, $55, $A3,$5A, $55,$55 + .byte $05, $55, $05, $50, $55, $5D, $FF + .byte $DA, $59, $55, $88, $5A, $A0,$11,$FF, $5F + .byte $DD, $00, $50, $05, $55, $05, $65 + .byte $55,$55, $05, $50, $55, $05, $50, $55 + .byte $5F, $FD, $5A, $55, $85, $58, $55 + .byte $A0,$11,$FF, $DF, $5D, $50, $00, $55, $00 + .byte $45, $55, $05, $50, $55,$55, $00, $85 + .byte $55,$55, $5F, $FD, $DA, $55,$55, $58, $55 + .byte $A0,$12,$FF, $5A, $54, $40, $05, $40, $05 + .byte $50, $A3,$55, $05, $50, $55, $05, $B5 + .byte $DA, $FF, $FD, $15, $55, $88, $55 + .byte $5F, $A0,$11,$FF, $FA, $05, $50, $06, $60 + .byte $04, $55, $50, $05, $54, $55, $50 + .byte $85, $05, $BA, $DA, $FF, $DD, $55 + .byte $B5, $88, $55, $5F,$5F, $DF, $5F, $DF + .byte $5F, $DF, $5F,$5F, $A8,$FF, $FA, $F5, $05 + .byte $40, $05, $50, $55, $05, $50, $45 + .byte $00, $55, $00, $55, $05, $55, $BA + .byte $DD, $FF, $85, $58, $80, $B5, $DD + .byte $9A, $5D, $5B, $DA, $5F, $5A, $DA + .byte $5A, $A9,$FF, $5D, $85, $50, $00, $55 + .byte $56, $50, $05, $40, $05, $50, $05 + .byte $50, $00, $55, $BA, $DF, $5D, $D5 + .byte $5A,$5A, $DD, $5A, $FD, $5A,$5A, $DD, $5B + .byte $9A, $DD, $55, $A9,$FF, $DD, $5A, $5D + .byte $A3,$55, $D5, $50, $55, $50, $55, $50,$50 + .byte $85, $5A,$5A, $FF, $FD, $55, $50, $00 + .byte $55, $00, $05, $55, $05, $5D, $5A + .byte $DA, $58, $55, $A8,$FF, $DF, $5D, $5B + .byte $5D, $5B, $5D, $5B, $FD, $D5, $F8 + .byte $D5,$D5, $B8, $D5, $BB, $D8, $5B, $DD + .byte $DF, $55, $00,$00, $55, $20, $00, $55 + .byte $00, $85, $5A, $59, $5A, $55, $A7,$FF + .byte $BF, $DD, $FB, $5D, $FA, $DF, $59 + .byte $F5, $55, $D9, $55, $B5, $D5, $B5 + .byte $5D, $5B, $8D, $5F, $5D, $5A, $A3,$55 + .byte $05, $50, $00, $55, $00, $55, $D9 + .byte $5A, $55,$55, $A6,$FF, $DF, $FD, $FB, $FD + .byte $DA, $FF, $DD, $5A, $B5, $D8, $A4,$55 + .byte $FF, $5A, $DF, $DD, $5F, $DD, $5A + .byte $55,$55, $07, $50, $25, $50, $05, $BD + .byte $55, $5D, $5A,$5A, $55, $A5,$FF, $DF, $BD + .byte $FA, $5F, $8A, $1D, $5A, $5F,$5F, $FF + .byte $DF, $FF, $5F, $FF, $DA, $FB, $FD + .byte $FA, $FF, $FD, $FA, $55,$55, $A6,$05, $55,$55 + .byte $5A, $5B, $5A,$5A, $A4,$FF, $FD, $FB, $5D + .byte $5B, $08, $15, $00, $55, $50, $89 + .byte $50, $85, $08, $55, $85, $5D, $5B + .byte $DD, $BA, $FF, $5A,$5A, $55,$55, $50, $02 + .byte $00, $55, $00, $55, $00, $55, $BA + .byte $DD, $5A,$5A, $5F, $FF, $BF, $DD, $FF + .byte $DA, $BB, $55, $8A, $50, $0B, $88 + .byte $A4,$55, $00, $55,$55, $59, $D5, $BB, $DD + .byte $BB, $A4,$55, $A3,$00, $25, $50, $05, $50 + .byte $00, $FA, $5F, $5A, $5F, $FA, $FF,$FF + .byte $FD, $FF,$FF, $FA, $FF, $F9, $F5, $D5 + .byte $F5, $55,$55, $80, $58, $51, $F5, $55 + .byte $DA, $BF, $FD, $FB, $5A, $55, $85 + .byte $55,$55, $57, $70, $00, $27, $00, $55 + .byte $90, $55, $FB, $5A, $55, $A4,$FF, $55,$55 + .byte $5A,$5A, $A5,$5F, $FD, $A3,$FF, $FB, $FD, $FF,$FF + .byte $FB, $FD, $5B, $9A, $5D, $55,$55, $A3,$F5 + .byte $55, $50,$50, $55, $5A, $55, $5A, $FA + .byte $A9,$FF, $FA, $A3,$F5, $FA, $5A, $55,$55, $A3,$5A + .byte $A3,$5F, $DF, $BA, $5A,$5A, $55, $A9,$FF, $FA + .byte $A0,$15,$FF, $FA,$FA, $F0, $F5,$F5, $A3,$FA, $A0,$10,$FF, $DF,$DF + .byte $DC, $DF, $A3,$FF, $DF, $F1, $DF, $FF + .byte $D1, $F1, $D1, $FF, $D1, $F1, $D1 + .byte $FF, $D1, $A3,$FF, $D1, $F1,$F1, $FF,$FF, $F1 + .byte $D1, $FF, $D1, $F1, $FF,$FF, $DF,$DF, $DC + .byte $DF, $FF, $F1, $A3,$61, $F1, $FF,$FF, $24 + .byte $FF, $24, $FF, $24, $A3,$FF, $24, $A3,$FF + .byte $24, $2F,$2F, $FF, $24, $2F,$2F, $FF,$FF, $2F + .byte $24, $FF, $24, $2F, $FF,$FF, $F1, $A3,$61, $F1 + .byte $A1 diff --git a/megademo/falling_apple.s b/megademo/falling_apple.s new file mode 100644 index 00000000..cb8bcb63 --- /dev/null +++ b/megademo/falling_apple.s @@ -0,0 +1,287 @@ +; Display Falling Apple II and message + + +falling_apple: + + ;=================== + ; init screen + jsr TEXT + jsr HOME + bit KEYRESET + + ;=================== + ; init vars + + lda #0 + sta DRAW_PAGE + + ;============================= + ; Load graphic page0 + + lda #$0c + sta BASH + lda #$00 + sta BASL ; load image to $c00 + + + lda #apple_low + sta GBASH + jsr load_rle_gr + + lda #4 + sta DRAW_PAGE + + jsr gr_copy_to_current ; copy to page1 + + ; GR part + bit PAGE1 + bit LORES ; 4 + bit SET_GR ; 4 + bit FULLGR ; 4 + +; jsr wait_until_keypressed + + + ;============================= + ; Load graphic page1 + + lda #$0c + sta BASH + lda #$00 + sta BASL ; load image to $c00 + + lda #apple_high + sta GBASH + jsr load_rle_gr + + lda #0 + sta DRAW_PAGE + + jsr gr_copy_to_current + + ; GR part + bit PAGE0 + +; jsr wait_until_keypressed + + + ;============================== + ; setup graphics for vapor lock + ;============================== + + ; Clear Page0 + lda #$0 + sta DRAW_PAGE + lda #$44 + jsr clear_gr + + ; Make screen half green + lda #$11 + ldy #24 + jsr clear_page_loop + + + ;===================================================== + ; attempt vapor lock + ; by reading the "floating bus" we can see most recently + ; written value of the display + ; we look for $55 (which is the grey line) + ;===================================================== + ; See: + ; Have an Apple Split by Bob Bishop + ; Softalk, October 1982 + + ; Challenges: each scan line scans 40 bytes. + ; The blanking happens at the *beginning* + ; So 65 bytes are scanned, starting at adress of the line - 25 + + ; the scan takes 8 cycles, look for 4 repeats of the value + ; to avoid false positive found if the horiz blanking is mirroring + ; the line (max 3 repeats in that case) + +vapor_lock_loop: ; first make sure we have all zeroes + LDA #$11 +zxloop: + LDX #$04 +wiloop: + CMP $C051 + BNE zxloop + DEX + BNE wiloop + + LDA #$44 ; now look for our border color (4 times) +zloop: + LDX #$04 +qloop: + CMP $C051 + BNE zloop + DEX + BNE qloop + + ; found first line of black after green, at up to line 26 on screen + ; so we want roughly 22 lines * 4 = 88*65 = 5720 + 4550 = 10270 + ; - 65 (for the scanline we missed) = 10205 - 12 = 10193 + + jsr gr_copy_to_current ; 6+ 9292 + ; 10193 - 9298 = 895 + ; Fudge factor (unknown) -30 = 865 + + ; GR part + bit LORES ; 4 + bit SET_GR ; 4 + bit FULLGR ; 4 + + ; Try X=88 Y=2 cycles=893 R2 + + nop + ldy #2 ; 2 +loopA: + ldx #88 ; 2 +loopB: + dex ; 2 + bne loopB ; 2nt/3 + + dey ; 2 + bne loopA ; 2nt/3 + + jmp display_loop +.align $100 + + + ;================================================ + ; Display Loop + ;================================================ + ; each scan line 65 cycles + ; 1 cycle each byte (40cycles) + 25 for horizontal + ; Total of 12480 cycles to draw screen + ; Vertical blank = 4550 cycles (70 scan lines) + ; Total of 17030 cycles to get back to where was + + ; We want to alternate between page1 and page2 every 65 cycles + ; vblank = 4550 cycles to do scrolling + + + ; 2 + 48*( (4+2+25*(2+3)) + (4+2+23*(2+3)+4+5)) + 9) + ; 48*[(6+125)-1] + [(6+115+10)-1] + +display_loop: + + ldy #48 ; 2 + +outer_loop: + + bit PAGE0 ; 4 + ldx #25 ; 130 cycles with PAGE0 ; 2 +page0_loop: ; delay 126+bit + dex ; 2 + bne page0_loop ; 2/3 + + + bit PAGE1 ; 4 + ldx #23 ; 130 cycles with PAGE1 ; 2 +page1_loop: ; delay 115+(7 loop)+4 (bit)+4(extra) + dex ; 2 + bne page1_loop ; 2/3 + + nop ; 2 + lda DRAW_PAGE ; 3 + + dey ; 2 + bne outer_loop ; 2/3 + + + + ;====================================================== + ; We have 4550 cycles in the vblank, use them wisely + ;====================================================== + ; do_nothing should be 4550+1 -2-9 -7= 4533 + + jsr do_nothing ; 6 + + lda KEYPRESS ; 4 + bpl no_keypress ; 3 + jmp start_over +no_keypress: + + jmp display_loop ; 3 + +start_over: + rts + + + ;================================= + ; do nothing + ;================================= + ; and take 4533-6 = 4527 cycles to do it +do_nothing: + + ; Try X=4 Y=174 cycles=4525 R2 + + nop ; 2 + + ldy #174 ; 2 +loop1: + ldx #4 ; 2 +loop2: + dex ; 2 + bne loop2 ; 2nt/3 + + dey ; 2 + bne loop1 ; 2nt/3 + + + rts ; 6 + + + + ;================================== + ; HLINE + ;================================== + + ; Color in A + ; Y has which line +hline: + pha ; 3 + ldx gr_offsets,y ; 4+ + stx hline_loop+1 ; 4 + lda gr_offsets+1,y ; 4+ + clc ; 2 + adc DRAW_PAGE ; 3 + sta hline_loop+2 ; 4 + pla ; 4 + ldx #39 ; 2 +hline_loop: + sta $5d0,X ; 38 ; 5 + dex ; 2 + bpl hline_loop ; 2nt/3 + rts ; 6 + + ;========================== + ; Clear gr screen + ;========================== + ; Color in A +clear_gr: + ldy #46 +clear_page_loop: + jsr hline + dey + dey + bpl clear_page_loop + rts + +gr_offsets: + .word $400,$480,$500,$580,$600,$680,$700,$780 + .word $428,$4a8,$528,$5a8,$628,$6a8,$728,$7a8 + .word $450,$4d0,$550,$5d0,$650,$6d0,$750,$7d0 + + +.include "../asm_routines/gr_unrle.s" +.include "gr_copy.s" + +.include "apple_40_96.inc" + + diff --git a/megademo/gr_copy.s b/megademo/gr_copy.s new file mode 100644 index 00000000..acd83f6f --- /dev/null +++ b/megademo/gr_copy.s @@ -0,0 +1,58 @@ + ;========================================================= + ; gr_copy_to_current, 40x48 version + ;========================================================= + ; copy 0xc00 to DRAW_PAGE + ; + ; 45 + 2 + 120*(8*9 + 5) -1 + 6 = 9292 + +gr_copy_to_current: + + lda DRAW_PAGE ; 3 + clc ; 2 + adc #$4 ; 2 + sta gr_copy_line+5 ; 4 + sta gr_copy_line+11 ; 4 + adc #$1 ; 2 + sta gr_copy_line+17 ; 4 + sta gr_copy_line+23 ; 4 + adc #$1 ; 2 + sta gr_copy_line+29 ; 4 + sta gr_copy_line+35 ; 4 + adc #$1 ; 2 + sta gr_copy_line+41 ; 4 + sta gr_copy_line+47 ; 4 + ;=========== + ; 45 + + ldy #119 ; for early ones, copy 120 bytes ; 2 + +gr_copy_line: + lda $C00,Y ; load a byte (self modified) ; 4 + sta $400,Y ; store a byte (self modified) ; 5 + + lda $C80,Y ; load a byte (self modified) ; 4 + sta $480,Y ; store a byte (self modified) ; 5 + + lda $D00,Y ; load a byte (self modified) ; 4 + sta $500,Y ; store a byte (self modified) ; 5 + + lda $D80,Y ; load a byte (self modified) ; 4 + sta $580,Y ; store a byte (self modified) ; 5 + + lda $E00,Y ; load a byte (self modified) ; 4 + sta $600,Y ; store a byte (self modified) ; 5 + + lda $E80,Y ; load a byte (self modified) ; 4 + sta $680,Y ; store a byte (self modified) ; 5 + + lda $F00,Y ; load a byte (self modified) ; 4 + sta $700,Y ; store a byte (self modified) ; 5 + + lda $F80,Y ; load a byte (self modified) ; 4 + sta $780,Y ; store a byte (self modified) ; 5 + + dey ; decrement pointer ; 2 + bpl gr_copy_line ; ; 2nt/3 + + rts ; 6 + diff --git a/megademo/megademo.s b/megademo/megademo.s index 98522e68..b483d219 100644 --- a/megademo/megademo.s +++ b/megademo/megademo.s @@ -26,12 +26,13 @@ ;=================== - ; do nothing + ; Loop Forever ;=================== -do_nothing: - jmp do_nothing +loop_forever: + jmp loop_forever .include "lz4_decode.s" .include "c64_opener.s" + .include "falling_apple.s"