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the state of things

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Jeff Epler 2025-03-22 11:32:55 -05:00
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# Pico Micro Mac (pico-umac)
v0.21-fruitjam 22 March 2025
I (@jepler) have run roughshod across the code, breaking things willy-nilly and adding
* 512x342 & 640x480 digital output on HSTX
* PIO USB
* PSRAM support
* Some Sound support
* To enable that, some VIA timer 2 support
The two main variants offered are the "400kB" mac with a 640x480 resolution & a
4MB mac with 512x342 resolution (presented centered on a 640x480 display).
For now, I2S is on pins A1 (data) A2 (LRCK) A3 (bit clock). With any luck it'll be moved to the on-board I2S soon.
What works?
* System beep
* A fair amount of hypercard, though not playing melodies with 'play "Boing" "a b c"'
* Hypercard 'play "Boing"' does play audio though (as does 'beep')
* Dark Castle including audio
* After Dark screensavers including audio
What almost works
* Glider was working, but my sound changes made it boot with an error about missing coprocessor?? (appears linked to the timer2 implementation)
There are artifacts that you can grab from the latest Actions build, at least until they expire.
Some good Mac software:
* https://archive.org/details/HyperCardBootSystem7
* https://archive.org/details/mac_DarkCastle_1_2
* https://archive.org/details/AfterDark2
v0.21 20 December 2024