if you find a SoC for $1 that has 2 Ethernet ports, and a usb host on it, while also having two cores and supporting 32MB of RAM you'll surprise me. rp2350 does all of the above for $1
>>dmitry+(OP)
Have you tested out the 2x PSRAM configuration; if so, have you written anything up about it? :) I've thought about a configuration like that myself but haven't committed to any hardware yet.
>>duskwu+R5
yes i have tested it and no i have not written about it (yet). it does work and with the new ISSI 16MB chips, it gives 32MB of continuous memory!
>>dmitry+Ho
Awesome - I might just have to try it.
How are you handling startup? The approach I had in mind was putting boot flash on the second channel with a separate CS pin from PSRAM and configuring that in OTP; any idea if that would work?
>>duskwu+Bp
Yes, sort of. Basically a tiny loader in OTP that enables nCS1 on some pin, copies code from there to ram on nCS0, reconfigures nCS1 to point to second ram. This does break usb flashing. Use swd.
>>dmitry+Hu
Is there no way to do that without code in OTP? The bootrom is supposed to scan for an IMAGE_DEF on both memory banks, and can use nCS1 as specified in FLASH_DEVINFO. Unless there's something I'm missing, that should be sufficient.