10 ms·
A rp2350 with psram and microsd could probably do a commendable job at pretending to be an entire Atari ST while providing a bootload of extra low latency goodi
by Lerc 1y ago
A rp2350 with psram and microsd could probably do a commendable job at pretending to be an entire Atari ST while providing a bootload of extra low latency goodies at the same time
- bitwize 1y agoI refer to the RP2xxx chips as "headless Amigas" because their PIO modules essentially function like Coppers: they are simple state machines that offload I/O functionality off the CPU. I think there's a very strong future in emulation of achieving FPGA-like latency by using a Raspberry Pi Pico/Pico2 to emulate each of the target machine's subsystems/chips.
- Lerc 1y agoHave you seen https://github.com/floooh/chips https://github.com/floooh/chips A bunch of PIO linked chips using these interfaces would feel like a weird blend of software and hardware that stands separately to the FPGA world. I have wondered if it would actually work as a larger scale paradigm. Imagine a single piece of silicon with a bunch of RP2xxxx level processor/ram blocks with PIO links between them all. I'm not sure how it would come out compared to FPGAs for balance of flexibility/cost/power consumption/etc. but I suspect it could find a niche. antirez mentioned running some of these on RP2040's