76 lines
1.5 KiB
Markdown
76 lines
1.5 KiB
Markdown
# machine
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I like uxn's idea of it being 16 bit because its 0 to 65535 or -32768 to 32767 which fits in your head nicely.
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## memory
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ideas for memory (ram) is going to be a giant hashmap of some kind, or maybe like picolisp?
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picolisp has 64 bit machine words, a cell is 2 words
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## types
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number (fixed point numbers), symbols (string), cons-pairs (lists)
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0000 0000 0000 0000 0000 0000 0000 0000
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tfff xxxx yyyy zzzz
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0rgb xxxx yyyy zzzz
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mmrr rrrg ggb0 0000 {xxxx xxxx yyyy yyyy zzzz zzzz} {xxxx xxxx yyyy yyyy zzzz zzzz} vz{xxxx xxxx yyyy yyyy zzzz zzzz}
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rrrx gggy bbbz xxxx yyyy zzzz
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#### 3-3-2 bit rgb
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rrrg ggbb xxxx yyyy
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triangles
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textures
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## devices
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### screen
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default screen is a single 2 triangle square face with a single dynamic texture that can be drawn on it
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### keyboard
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ASCII/UTF8 encoded values
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### mouse/joystick
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Theoretically a modern controller could be mapped into 3 mouse/joystick devices
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A nes controller could be mapped onto 1 mouse/joystick device
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x axis -> J1 -> J2 -> Dpad left/right
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y axis -> J1 -> J2 -> Dpad up/down
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button 1 -> A -> t1 -> select
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button 2 -> B -> t2 -> start
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button 3 -> X -> b2 -> "meta button like controller start"
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button 4 -> Y -> b2 -> unused
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xxxx yyyy 1234
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x (4 bits)
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y (4 bits)
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1 is button 1 pressed?
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2 is button 2 pressed?
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3 is button 3 pressed?
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4 is button 4 pressed?
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### sound/music
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This one is going to be the hardest most likely, but its prolly going to be something like the backend dac for ORCA.
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### network/filesystem
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9p filesystem/network by default.
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Have an easy way to network.
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