Appears to be a technical design document from 2 years ago, although I can't tell if anyone ever used it to create his/her own board (let alone use it for mass production). Shame, if I'm right.
"GRETA is supposed to expand an Amiga 500 by 8 MB SDRAM, an ethernet controller as well as a port for MicroSD cards and a freely usable I/O-port. It seems that the development of the board has been finished but since 2013 obviously the programming of the FPGA was not continued: Currently GRETA only offers additional memory. All other features still have to be programmed. The documentation of the projects are available on Github under the GNU General Public License."
I'm not loving GPL for "dumb" blocks of hardware designs. SRAM glue and SD card boilerplate would benefit from a more liberal license. Commercial fees charged by the big boys for some of this crap is truly absurd. And it barely works.
Want to craft a tool to generate it and release under GPL? Right on. But the output? Please consider other options. I know so many people wrestling with this stuff.
Emulator code, cpu cores, etc. may benefit from GPL depending on your leanings. I just don't see it for some of the basic blinky-blink stuff.
You might want to look out for the Vampire cards (http://www.apollo-accelerators.com) - they have one out for the A600, the A500 one is almost ready, and after that comes one for the A1200 :)
You mean slow RAM expansion slot? Isn't it connected to chipset side, right. So limited in capacity and slow.
On some Amiga models I actually saw this expansion "slow RAM" as true chip RAM, could play samples, set up copper lists, set Denise to display bitplanes from it, etc.
That's the Apollo 68k accelerator right? If so, that could be great, though I wonder if it'd result in too much data travelling through the A500 expansion port.
Sure, that makes sense, but I was replying to the suggestion that the Vampire could be part of the A500 accelerator linked to at the top of this thread.
