4 ms·
PicoMEM by FreddyV – All in One 8-Bit ISA Expansion Card
- vkoskiv 2y agoA similar project for PCMCIA[1] is being developed by yyzkevin. Really exciting IMO, not yet available, but I submitted a response to their google sheet, hoping to get one of these when the preorders start. [1] https://www.youtube.com/watch?v=YoJ12leojwo https://www.youtube.com/watch?v=YoJ12leojwo
- actionfromafar 2y agowonder if it will work in the 99% standard Amiga 600 and Amiga 1200 PCMCIA slots. :)
- yyzkevin 2y agoI tested on Amiga 1200 without any issues.
- terinjokes 2y agoI've also started working on a modern PCMCIA card, so this is pretty exciting to me. Do you have a GitHub or IRC I can follow?
- yyzkevin 2y agoI am active on discord. I think we talked about this previously, lorwan related, a while ago.
- terinjokes 2y agoAh yes, so we did in 2022! Glad to see you're still hacking on this.
- polpo 2y agoIt’s interesting to note that the WiFi on the PicoMEM is based on code from yyzkevin originally from his PCMCIA project. And the PicoMEM uses PSRAM code from my PicoGUS project. And then PicoGUS uses Sound Blaster code from yyzkevin. And now I’m getting inspiration from how PicoMEM does address decoding. And so on and so on… This is a pretty cool little open source community we’ve created around the RP2040, cross-pollinating each others’ projects.
- crote 2y agoI'm quite surprised they stuck with the off-the-shelf Pi Pico module. When you're designing your own PCB already, why not just use the bare RP2040 chip? It'd save them an awful lot of money, and they clearly already have the necessary hardware design skills. The only part you can't trivially clone is the wifi module, really.
- linkpuff 2y agoI believe it is done that way because it helps replacing the component if needed without having to order a new bespoke pcb Edit: Also, the rp2040 is harder to solder than the other chips in the board due to the different packaging, so that might play a role on it
- naoru 2y agoLook at PicoGUS [0], at first it was a similar semi-prototype board with an off-the-shelf Pico module and then it was redesigned into a neat simple expansion card. Give it some time. [0] https://picog.us/ https://picog.us/
- yyzkevin 2y agoRegulatory/Licensing and complexity of pcb design for rf and assembly issues and all that aside, if you look up the cost on the CYW43 wireless chip, it costs more than the Pico W module last I checked. Wireless is a very popular feature on PicoMEM from the discussions I see and from my own personal use.
- numpad0 2y agoNo, it doesn't save an awful lot at small scale(in my gut feeling <200 units). Engineering time saving far outweighs paying $4 extra for Pico.
- nubinetwork 2y ago6 wait states seems awfully slow, how come it takes so long to address memory on the card?
- gadyke 2y agoIt's because it's accessed via SPI PSRAM rather than the on-die SRAM on offer for the 128Kb.
- jasongill 2y ago> NE2000 Now that is a name I haven't heard in a long time
- boricj 2y ago> Now that is a name I haven't heard in a long time Hopefully, that's a name that will stay buried in the 20th century. "Was the NE2000 really that bad?" (https://news.ycombinator.com/item?id=26755293 https://news.ycombinator.com/item?id=26755293)
- actionfromafar 2y agoStill better than the 3c501 :-D
- whizzter 2y agoFunny to see the FreddyV nick again, he made (according to my musician friend) the most accurate (at the time) XM-replayer for small demoscene productions. There was many replayers back in those days but tracking what FastTracker2 did bug-for-bug with regards to effects like arpeggios and volume slides made it quite tricky to get things to sound correctly in the third party players.
- FreddyVFR 2y agoHi, Yes, it is me :) I also released Mod Master XT recently that play .XM on XT computers.