4 ms·
> This enables a $37 part (XCA712T) to be able to fit over 3 Linux-worthy RISC-V processors running at 180 MHz, with 720 kB of block RAM available for caches, F
by Teknoman117 6y ago
> This enables a $37 part (XCA712T) to be able to fit over 3 Linux-worthy RISC-V processors running at 180 MHz, with 720 kB of block RAM available for caches, FIFOs, or anything else.
The $100 Alchitry Au has an XC7A35T and 256 MB of DDR3. Currently waiting for them to come back in stock, they're super neat and are open hardware. They're basically the successor to the Mojo V3.
- jack12 6y ago> are open hardware. Are they? I only see PDFs of schematics on their website, and no claims of being open. Of course with a breakout board like that there isn't really any secret sauce in the "source", just the expertise, trials and errors, and grunt work of layout. At that same level of "schematics available" dev boards, another option for a XC7A35T and 256MB DDR3 are the ones on aliexpress for $50, https://github.com/ChinaQMTECH/QM_XC7A35T_DDR3 https://github.com/ChinaQMTECH/QM_XC7A35T_DDR3, though I don't think they have the transceiver pins exposed and are bring-your-own-jtag-programmer. All the IO is via 0.1" headers, which are going to be lower integrity but a LOT easier and cheaper to use. There's also a $99 XC7A100T board, https://github.com/ChinaQMTECH/QM_XC7A100T_WUKONG_BOARD https://github.com/ChinaQMTECH/QM_XC7A100T_WUKONG_BOARD, with 256MB DDR3, a gigabit ethernet phy, hdmi port, 0.1" headers and PMOD headers, and with some transceiver pins exposed.