second: more work on plasma
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233ba08fbb
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7c0330a741
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@ -1,3 +1,6 @@
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TODO OVERALL
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+ See if can squeeze into 64k RAM
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TODO MUSIC
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+ be sure to mute channels when pausing
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@ -24,6 +27,13 @@ DISK I
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have it reverse course?
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- tunnel (for real)
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- cirles / interference pattern (for real)
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scroll off to right at end
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+ gorilla
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scroll on, better TV effect
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+ leaves
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better animation?
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+ Lens / Rotozoom
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- add lo-res LENS sprite to bounce around
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@ -33,10 +43,10 @@ DISK I
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+ Plasma
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- switch to purple green
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- do the weird vertical wipe
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- do the weird vertical wipe while still running
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+ Plasmacube
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- have cube mask with different color sides
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+ bump up to 16 frames instead of just 8
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+ Dot Bounce
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@ -52,6 +62,7 @@ DISK I
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+ ocean / voxels
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- probably too big, reduce the size
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- at end, scroll back off screen
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+ polar
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@ -0,0 +1,204 @@
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; Based on BTC.SYSTEM by Oliver Schmidt
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; How to generate proper audio for this:
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; -Open MP3 in Audacity
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; -Change Project Rate (Hz) to 33,000 (bottom left box)
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; -Tracks --> Mix... --> Mix Stereo Down to Mono
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; -File --> Export --> Export as WAV
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; - Select "WAV (Microsoft) signed 16-bit PCM"
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; - Under "Edit Metadata Tags" hit "Clear", then "Okay"
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; -Open saved WAV file in BTc Sound Encoder 3.0
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; -Change Algorithm to "1 bit" (leave fineness as BTc16)
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; -File --> Export binary file .BTC format
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spkr = $C030
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;****************************************************************
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;* Audio playback *
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;****************************************************************
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; audio file in BTC_L/BTC_H
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; pages to play in X
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play_audio:
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ldy #0
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; loop here as long as BITs are [F]alse (aka 0)
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F_NX: NOP ; 2 2
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NOP ; 2 2
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NOP ; 2 2
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BIT $00 ; 3 3
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F_RD: LDA (BTC_L),y ; 5 5 5
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ASL ; 2 2 2
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BCS T_1_SW ; 2/3 2
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NOP ; 2 2
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NOP ; 2 2
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NOP ; 2 2
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NOP ; 2 2
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F_1: JSR delay ; 6 (+13) 19
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ASL ; 2 2 = 31
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BCS T_2_SW ; 2/3
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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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F_2: JSR delay ; 6 (+13)
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ASL ; 2
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BCS T_3_SW ; 2/3
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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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F_3: JSR delay ; 6 (+13)
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ASL ; 2
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BCS T_4_SW ; 2/3
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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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F_4: JSR delay ; 6 (+13)
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ASL ; 2
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BCS T_5_SW ; 2/3
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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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F_5: JSR delay ; 6 (+13)
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ASL ; 2
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BCS T_6_SW ; 2/3
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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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F_6: JSR delay ; 6 (+13)
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ASL ; 2
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BCS T_7_SW ; 2/3
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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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F_7: JSR delay ; 6 (+13)
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ASL ; 2
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BCS T_8_SW ; 2/3 2 2
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NOP ; 2 2 2
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NOP ; 2 2 2
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NOP ; 2 2 2
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NOP ; 2 2 2
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F_8: INY ; 2 2 2
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BNE F_NX ; 2/3 3 = 31 2
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INC BTC_H ; 5 5
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DEX ; 2 2
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BNE F_RD ; 2/3 3 = 31
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RTS
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; click speaker on transitions
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T_1_SW: STA spkr ; 4 [SW]itch to [T]rue on BIT [1]
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BCS T_1 ; 3 (always)
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T_2_SW: STA spkr ; 4 [SW]itch to [T]rue on BIT [2]
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BCS T_2 ; 3 (always)
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T_3_SW: STA spkr ; 4 [SW]itch to [T]rue on BIT [3]
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BCS T_3 ; 3 (always)
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T_4_SW: STA spkr ; 4 [SW]itch to [T]rue on BIT [4]
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BCS T_4 ; 3 (always)
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T_5_SW: STA spkr ; 4 [SW]itch to [T]rue on BIT [5]
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BCS T_5 ; 3 (always)
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T_6_SW: STA spkr ; 4 [SW]itch to [T]rue on BIT [6]
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BCS T_6 ; 3 (always)
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T_7_SW: STA spkr ; 4 [SW]itch to [T]rue on BIT [7]
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BCS T_7 ; 3 (always)
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T_8_SW: STA spkr ; 4 [SW]itch to [T]rue on BIT [8]
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BCS T_8 ; 3 (always)
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F_1_SW: STA spkr ; 4 [SW]itch to [F]alse on BIT [1]
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BCC F_1 ; 3 (always)
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F_2_SW: STA spkr ; 4 [SW]itch to [F]alse on BIT [2]
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BCC F_2 ; 3 (always)
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F_3_SW: STA spkr ; 4 [SW]itch to [F]alse on BIT [3]
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BCC F_3 ; 3 (always)
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F_4_SW: STA spkr ; 4 [SW]itch to [F]alse on BIT [4]
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BCC F_4 ; 3 (always)
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F_5_SW: STA spkr ; 4 [SW]itch to [F]alse on BIT [5]
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BCC F_5 ; 3 (always)
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F_6_SW: STA spkr ; 4 [SW]itch to [F]alse on BIT [6]
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BCC F_6 ; 3 (always)
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F_7_SW: STA spkr ; 4 [SW]itch to [F]alse on BIT [7]
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BCC F_7 ; 3 (always)
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F_8_SW: STA spkr ; 4 [SW]itch to [F]alse on BIT [8]
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BCC F_8 ; 3 (always)
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; loop here as long as BITs are [T]rue (aka 1)
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T_NX: NOP ; 2
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NOP ; 2
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NOP ; 2
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BIT $00 ; 3
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T_RD: LDA (BTC_L),y ; 5
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ASL ; 2
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BCC F_1_SW ; 2/3
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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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T_1: JSR delay ; 6 (+13)
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ASL ; 2
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BCC F_2_SW ; 2/3
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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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T_2: JSR delay ; 6 (+13)
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ASL ; 2
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BCC F_3_SW ; 2/3
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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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T_3: JSR delay ; 6 (+13)
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ASL ; 2
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BCC F_4_SW ; 2/3
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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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T_4: JSR delay ; 6 (+13)
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ASL ; 2
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BCC F_5_SW ; 2/3
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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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T_5: JSR delay ; 6 (+13)
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ASL ; 2
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BCC F_6_SW ; 2/3
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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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T_6: JSR delay ; 6 (+13)
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ASL ; 2
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BCC F_7_SW ; 2/3
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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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T_7: JSR delay ; 6 (+13)
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ASL ; 2
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BCC F_8_SW ; 2/3
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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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T_8: INY ; 2
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BNE T_NX ; 2/3
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INC BTC_H ; 5
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DEX ; 2
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BNE T_RD ; 2/3
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RTS
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delay:
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nop ; 2
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nop ; 2
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BIT $00 ; 3
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RTS ; 6 = 13
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@ -122,12 +122,12 @@ zappo_inner_loop:
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sta (OUTL),Y
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sta (GBASL),Y
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lda #150
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lda #250
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jsr wait
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ldy #19
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lda $00
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lda #$00
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sta (OUTL),Y
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sta (GBASL),Y
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iny
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@ -15,7 +15,7 @@ PLASMA: plasma.o
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ld65 -o PLASMA plasma.o -C $(LINKER_SCRIPTS)/apple2_8000.inc
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plasma.o: plasma.s \
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do_plasma.s init_plasma.s \
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do_plasma.s init_plasma.s scroll_off.s \
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../zp.inc ../hardware.inc ../qload.inc
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ca65 -o plasma.o plasma.s -l plasma.lst
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@ -86,7 +86,14 @@ div8_loop:
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jsr do_plasma
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; drop
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lda DRAW_PAGE
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eor #$20
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sta DRAW_PAGE
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jsr scroll_off
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lda #25
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jsr wait_ticks
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;=============================
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; do purple/green
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jsr do_plasma
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; drop
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lda DRAW_PAGE
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eor #$20
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sta DRAW_PAGE
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jsr scroll_off
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lda #25
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jsr wait_ticks
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;=============================
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jsr do_plasma
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; drop
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lda DRAW_PAGE
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eor #$20
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sta DRAW_PAGE
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jsr scroll_off
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rts
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.include "init_plasma.s"
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.include "do_plasma.s"
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.include "../hgr_clear_screen.s"
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.include "scroll_off.s"
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.include "../irq_wait.s"
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;.include "hgr_table.s"
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; note, this should scroll while still moving
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; don't have time to do that
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scroll_off:
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ldx #0
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scroll_off_outer_loop:
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lda hposn_low,X
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sta GBASL
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lda hposn_high,X
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clc
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adc DRAW_PAGE
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sta GBASH
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ldy #39
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lda #00
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scroll_off_inner_loop:
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sta (GBASL),Y
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dey
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bpl scroll_off_inner_loop
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lda #50
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jsr wait
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inx
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cpx #192
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bne scroll_off_outer_loop
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rts
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