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Forum Index : Microcontroller and PC projects : Picocalc done properly?
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thwill Guru  Joined: 16/09/2019 Location: United KingdomPosts: 4286 |
I must have hallucinated this then: https://www.youtube.com/watch?v=8bx2vpwuXoo EDIT: Note that some LCDs you cannot BLIT from, either because they are "crap" or because their MISO pin isn't connected ... which *might* include the LCD on the PicoCalc which may be the origin of your statement. Best wishes, Tom Edited 2025-06-10 04:15 by thwill MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| Gadgetguy Regular Member  Joined: 26/04/2025 Location: FrancePosts: 85 |
Wow. I never realized that the gamemite is not hdmi. Would gamemite games run on the picocalc? But even if not, the proposed new lcd based design would likely run gamemite games? This is superb news, thank you! Edited 2025-06-10 04:24 by Gadgetguy |
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| thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4286 |
The Game*Mite uses a cheap ILI9341 320x240 LCD. Possibly not (especially with the RP2040), the larger display is slower to update and requires more RAM for any framebuffers (I do not believe you can create a framebuffer for just a 320x240 slice of the display). Also I'm not 100% certain but something someone (you?) said on the ClockworkPi forum makes me wonder whether the MISO pin on the display is working, and if not, then no BLIT from the display is possible which may be used by some games ... but now I think about it, maybe not. Someone did try porting the Game*Mite version of Flappy Bird and found it too slow. I'm pretty certain it would ... though the a larger screen might need to be accounted for. Best wishes, Tom MMBasic for Linux, Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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| Gadgetguy Regular Member Joined: 26/04/2025 Location: FrancePosts: 85 |
Thank you Tom for the reply. I am not sure what the MISO pin is, so it was not me posting about it. So I will try to experiment with Game*Mite games on the picocalc, just as an experiment. And I hope that the concept "better Picocalc" proposed by Peter turns into something I could buy Edited 2025-06-10 04:56 by Gadgetguy |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7772 |
AFAIK the ILI9341 has everything working, including the MISO pin. It supports transparent text etc. ILI9488 has problems with MISO. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 10169 |
a4b0920f-57c3-42e8-86d7-5f8a6c7d734a.pdf     |
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| dddns Guru Joined: 20/09/2024 Location: GermanyPosts: 462 |
Very nice, that you separated the keyboard! Is there a reason, why you didn't use i2c port expanders? |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 7772 |
It's cheaper not to? :) 72 switches. 16 IO per expander. 5 expander chips and the wiring is much, much more difficult than a matrix. Multiplexing keyboards is the time-honoured way to do things and there's no shortage of GPIO pins here. Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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