Macintosh emulator v0.02b

PicoCalc
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It’s based on umac for the pico. Download uf2 here: Release 20250508 · benob/picocalc-umac · GitHub

Use right-shift to toggle mouse, enter to click, space for precise mouse movement. Ctrl-Alt-F1 reboots in bootsel mode.

There are two resolutions you can pick from: the picocalc-native 320x320 but a lot of software is not made for this resolution, and the original 512x342 which requires scrolling the virtual screen.

SD card is unsupported and there is probably a ton of bugs.

Have fun

– edit –
One bug is the key ‘a’ does not work. There is a hack in the original project I need to look at.

13 Likes
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YES!!! One of my ambitions for the PicoCalc has been beaten before I could even try! Ohhh I’d love to look into USB OTG support for real mouse input!

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And bluetooth on the w variants!?

Also if someone has a pimonori, more ram allows for system 7, but I don’t own one.

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This is so cool will test it today.

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There is a lot of code in the project I started from (GitHub - evansm7/pico-mac: Run the popular umac emulator right on your Pi Pico!) to handle usb peripherals. I wiped it in my repo since I don’t have the hardware, but you may be able to make it work.

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Will this work on the pico 2 w?

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You mean the uf2 I released? Yes they do.

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I love it good job. Tested on both pico H and pico 2 w.

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Yay! Another thing for me to play with, when I get my PicoCalc.

Thank you.

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I’m going to trump quicker posters and say double yay. Well done.

The itch for a PicoCalc delivery is getting unbearable. As for now, I’m off to AliExpress to look for 512x342 LCD panels. Ok, one more yay for a total of three.

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I have one without BT/Wifi but it will need to be compiled for it.

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WOW that is so so COOL. Good job.

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Ran it on my PicoCalc with the Pico 2W.

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Here is a new release with SD card support. HFS disk images (often .img, .dsk) can be copied at the root of the SDcard under the name umac0.img (only a single disk). If one is found, it will be loaded instead of the default disk. Disk images placed on the SD card are writable! I also changed the virutal screen scrolling to better follow the pointer.

I tried a bunch of games from https://www.macintoshrepository.org and Epyx Rogue worked on the pico2 for example. When downloading, make sure that the software is for macos 3.x, for the 68k CPU and that it does not require much memory. Let me know what you are able to make work.

There are uf2 for pico2 and pico (untested) here:

Remember, right shift toggles mouse movement, click with return. ctrl-alt-del reboots, ctrl-alt-F1 to bootsel.

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There seems to be a issue for the pico version pico 2 version is fine.

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Would this need to be recompiled for the Pimoroni pico 2 plus?

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I don’t have one so I don’t know whether it is compatible. I would say yes, you need to specify the board kind with cmake.

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Release v0.03b fixes reading a disk image from /umac0.img off the SD-card on the pico1. Also works on pico2.

1 Like