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122 lines
1.8 KiB
ArmAsm
122 lines
1.8 KiB
ArmAsm
; And Believe Me, I'm Still Alive
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.include "zp.inc"
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still_alive:
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;=============================
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; Clear screen
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;=============================
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bit LORES ; needed or 80 column card has issues??
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jsr HOME
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jsr TEXT
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;=============================
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; setup Lyrics
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;=============================
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lda #<(lyrics)
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sta LYRICSL
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lda #>(lyrics)
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sta LYRICSH
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;===========================
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; setup text screens
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;===========================
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lda FORTYCOL
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bne only_forty
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switch_to_80:
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; Initialize 80 column firmware
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jsr $C300 ; same as PR#3
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sta SET80COL ; 80store C001
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; makes pageflip switch between
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; regular/aux memory
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only_forty:
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; Clear text page0
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jsr HOME
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;============================
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; Draw Lineart around edges
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;============================
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jsr setup_edges
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jsr HOME
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;=====================================
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; See if Mockingboard or Electric Duet
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;=====================================
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lda USEMB
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beq no_mockingboard
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jsr still_alive_mb
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jmp wait_for_keypress
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no_mockingboard:
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jsr still_alive_ed
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wait_for_keypress:
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lda KEYPRESS ; check if keypressed
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bpl wait_for_keypress ; if not, loop
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reset:
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lda $AA6A ; current disk slot, dos 3.3
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ora #$c0
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sta $3F3
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lda #0
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sta $3F2
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jmp ($3F2) ; warm-start?
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; want reboot, not BASIC
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;==========
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; main code
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;==========
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.include "sa_mb.s"
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.include "sa_ed.s"
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;=========
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;routines
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;=========
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.include "gr_offsets.s"
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.include "mockingboard_a.s"
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.include "lz4_decode.s"
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.include "display_art.s"
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.include "display_lyrics.s"
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.include "interrupt_handler.s"
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.include "duet.s"
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;=========
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; strings
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;=========
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lyrics:
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.include "lyrics.inc"
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art:
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.include "ascii_art.inc"
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LZ4_BUFFER:
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music_address:
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;.incbin "SA.KR4"
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;.incbin "SA.ED"
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