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Forum Index : Microcontroller and PC projects : Colour Maximite 1.5? or something
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| matherp Guru  Joined: 11/12/2012 Location: United KingdomPosts: 9115 |
Quick note for those waiting for boards: They should finish production today and I've paid for 1 week shipping I'll put in some firmware but for future updates you will need a male-male USB-A - USB-A cable as used for updating the CMM2 over USB |
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atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 722 |
Peter, one more Board left for me? THX |
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| matherp Guru Joined: 11/12/2012 Location: United KingdomPosts: 9115 |
No - sorry. Once they are tested I'll post all the design files |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4233 |
Atmega, You can have the board reserved for me. I will order one later, when I have more free time. May, I expect. Arrange with Peter how to get it shipped once he has them. Volhout PicomiteVGA PETSCII ROBOTS |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 722 |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 722 |
Volhout, thank you very much. I will take over |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 722 |
Peter, i have send you a PM via the Forum Messenger. Please ACK Receive;-) Dietmar |
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Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
What size is the PCB, Peter? I'm considering designing an acrylic case. I don't need cutout details or anything at this stage, although fixing centres might be handy. It might be a simple rectangular tube with PCB fixing holes and a slot for the volume control yet. 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: 9115 |
Board is 75,100 Fixings are at 3,3 72,3 3,97, 72,97 Holes are 3.5mm |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
Thanks. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2350 |
hi Peter, an interesting idea came up in discussions: given USB HOST mode being available, does the picomite even need to have an SD slot taking up 4 GPIO pins? instead, a USB to SD adapter could be used to gain the same functionality:  or even simpler, just plug in a USB flash drive - so the SD card slot on the front of a picomite would be replaced with a USB socket with a stumpy USB flash drive plugged in. as an added bonus, this would also mean users would no longer need to find an SD to USB adapter if they wished to plug the flash storage into their PC. cheers, rob :-) Edited 2024-01-31 22:57 by robert.rozee |
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| Volhout Guru Joined: 05/03/2018 Location: NetherlandsPosts: 4233 |
Supporting keyboard, mouse, controllers (hid) is completely different from memory devices. I guess we will loose all flash slots when these libraries are added. Volhout Edited 2024-02-01 02:16 by Volhout PicomiteVGA PETSCII ROBOTS |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2350 |
valid point - does anyone know what the code overhead for including MSC support in TinyUSB is? i'm picking it will not be enormous (<50k), and the cost may well be worthwhile when compared to gaining back 4 GPIO pins and achieving potentially better flash storage performance. cheers, rob :-) |
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| atmega8 Guru Joined: 19/11/2013 Location: GermanyPosts: 722 |
We reinvent the IBM PC Edited 2024-02-01 02:31 by atmega8 |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2350 |
 i was thinking that myself earlier on! the speed of the USB bus (12MHz) is probably not that much different to what was achievable on an an original XT motherboard (ISA bus) with a 4.77MHz clock, 8-bits wide, and 6 clock cycles per transaction. actually, 12MHz USB may even be a tad faster.i may need to do some testing with a couple of 4-port hubs daisy chained... mouse, keyboard, 2x gamepads, storage, I/O expander - that already consumes 7 USB ports! cheers, rob :-) |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
Why mess about? There's no OS anyway - you can't make the most of any drives. Use 16MB of flash (the maximum that a RP2040 can handle) and even drive B: is optional. Be careful not to lose what the PicoMite is good at by overloading it with stuff that might cripple it. We keep losing flash slots, for example, but there is *no possible* replacement for them as there is no CHAIN command. . Edited 2024-02-01 02:59 by Mixtel90 Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| lizby Guru Joined: 17/05/2016 Location: United StatesPosts: 3150 |
Or perhaps, "no present replacement" (considering how many times we have seen the "not possible" achieved). ~ Edited 2024-02-01 03:10 by lizby PicoMite, Armmite F4, SensorKits, MMBasic Hardware, Games, etc. on fruitoftheshed |
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| Mixtel90 Guru Joined: 05/10/2019 Location: United KingdomPosts: 6787 |
Unless the RP2040 is suddenly blessed with a lot more RAM I suspect it's not possible. :) Mick Zilog Inside! nascom.info for Nascom & Gemini Preliminary MMBasic docs & my PCB designs |
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| robert.rozee Guru Joined: 31/12/2012 Location: New ZealandPosts: 2350 |
well, there seems to be considerable enthusiasm in this thread for Peter's success with sony PS3 and PS4 controllers, along with USB mouse, and quite a bit of excitement when No0ne got USB keyboard support working. beyond that, having MSC replace SD cards seems like a relatively small step with a good return - especially considering the sporadic issues raised over SD cards not always working reliably for some folks. i am quite confident that the picomite will nicely survive any move to a unified peripheral bus. incidentally, the original IBM PC (before the XT), when it first was created lacked an operating system; it had as little as 64k of RAM and booted directly to BASIC. sound familiar? cheers, rob :-) Edited 2024-02-01 03:19 by robert.rozee |
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thwill Guru Joined: 16/09/2019 Location: United KingdomPosts: 4039 |
I can no longer restrain myself ... Can we not take a moment (month or two) to quietly appreciate the eggs that the Golden Goose has delivered rather than debating how we might also catch, cook and eat said goose ... after which incidentally, it will be incapable of laying any future eggs. IMO you've given Peter more than enough nudges, can we perhaps see what (no obligation) he comes up with next, or perhaps someone could step-up and do some work on the PicoMite firmware themselves? I'm sure CHAIN is implementable, as is breaking the function/command-slot limitation, but Peter shouldn't be expected to do it.  Best wishes, Tom Edited 2024-02-01 03:26 by thwill Game*Mite, CMM2 Welcome Tape, Creaky old text adventures |
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