2018-05-24 15:59:07 +00:00
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Fun fact:
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The letter 'Z' does not appear at all in the lyrics to the song.
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(Noticed when I had to edge comparison for uppercase off by one)
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2018-05-23 15:59:56 +00:00
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Challenges:
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+ 6-channel audio
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+ Fitting it all in 48k (want to avoid disk routines if can)
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+ Printing the ASCII art simple code (takes longer than 50Hz)
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2018-05-23 20:09:44 +00:00
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ASCII Art Size
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The ASCII art is roughly 7k.
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You can LZ4 compress it and decompress on the fly, saving 3k or
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so even when factoring in the decompression code.
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The problem is decompression is slower (pauses the music) and
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can't be run at the same time as the music decompression is
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happening unless we duplicate a lot of code.
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May revisit if we need the room.
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2018-05-23 15:59:56 +00:00
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2018-05-23 18:07:19 +00:00
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Goal: Binary fits in 16k (16384 bytes)
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2018-05-23 15:59:56 +00:00
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2018-05-23 18:07:19 +00:00
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note size (bytes)
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--------------------- ------
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2018-05-23 16:50:12 +00:00
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initial music player: 2078
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add raw ascii art: 9142
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add 3-channel music+lyrics,then slim a bit: 18787
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initial 40 col support: 18864
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2018-05-23 18:07:19 +00:00
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have art loading properly 40col: 18910
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2018-05-23 20:04:27 +00:00
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lz4 encode the ascii art: 15529
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revert because lz4 code not re-entrant: 18910
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2018-05-24 03:49:18 +00:00
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add 4-channel music (KR4): 20128
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2018-05-24 14:33:05 +00:00
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add cursor (a bit distracting) 20162
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2018-05-22 03:46:47 +00:00
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Memory Map
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Lowmem: 4k
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2018-05-24 03:49:18 +00:00
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Code: 20k (8k=audio, 5k=lyrics, 3k=art)
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2018-05-22 03:46:47 +00:00
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Sound buffers: 14k
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2018-05-24 03:49:18 +00:00
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