Comment on My business card runs Linux and Ultrix (2022)Comments−mjevans2yThat Atmel chip sounds like quite a heck to work with... the DMA section alone. Also related, 'Improving RAM bandwidth' section.The author's final conclusion about the chip... "Thanks for nothing, Atmel."I wonder if there are better options available today, but I fear anything useful might involve BGA or similar surface mount techniques.−dmitrygr2yI wonder if there are better options available todayRp2350. That’s what I’m basing my next revision of this project on−mjevans2yhttps://www.raspberrypi.com/products/rp2350/0.5MB RAM and 4MB of flash might not sound like a lot, but that's plenty for many micro computer system environments.−dmitrygr2yIt supports QSPI PSRAM natively. So it’ll be a lot faster than doing in manually on ATSAMD21−mmoskal2yAlso M33 vs M0 and higher clock - should be 2-3x faster. And maybe you can do something with the second core.Im super impressed you got this to work! The memories of the SAMD clocks... Shudders.−mjevans1yI found an older HN thread from about a month ago while trying to learn more about the RP2350https://news.ycombinator.com/item?id=41214307It seems that it didn't get much coverage at the time.
Comments
That Atmel chip sounds like quite a heck to work with... the DMA section alone. Also related, 'Improving RAM bandwidth' section.
The author's final conclusion about the chip... "Thanks for nothing, Atmel."
I wonder if there are better options available today, but I fear anything useful might involve BGA or similar surface mount techniques.
Rp2350. That’s what I’m basing my next revision of this project on
https://www.raspberrypi.com/products/rp2350/
0.5MB RAM and 4MB of flash might not sound like a lot, but that's plenty for many micro computer system environments.
It supports QSPI PSRAM natively. So it’ll be a lot faster than doing in manually on ATSAMD21
Also M33 vs M0 and higher clock - should be 2-3x faster. And maybe you can do something with the second core.
Im super impressed you got this to work! The memories of the SAMD clocks... Shudders.
I found an older HN thread from about a month ago while trying to learn more about the RP2350
https://news.ycombinator.com/item?id=41214307
It seems that it didn't get much coverage at the time.