Minimig PCB run - interest thread

[SteveSMS]

Oeh! I want one too! Actually, i want 2. One assembled and one unassembled.

Here's an idea: How about you put a RAM slot on the board (SD-RAM or so), so we can have extra FAST or CHIP ram?  :idea:
That would be VERY nice

Don't know if it's possible though...


Edit: would it be possible to "upload" new "firmware" to the FPGA? For example, an AGA chipset? Maybe through the serial port?

[SteveSMS]

alexh wrote:
Erm, you put the FPGA image on the MMC card. I thought everyone knew that?

I didn't...

alexh wrote:
You wont be able to update to AGA though. Not with the original MiniMig PCB.

o No 32-bit processor (No real point in AGA without an 020+).

o 16-bit RAM (need 32-bit for AGA).

o 12-bit R2R ladder / Video DAC (need 24-bit for AGA)

You might be able to work around the RAM thing if you ran the RAM interface at 2x speed. (Dunno if that is possible, probably have to run everything at 2x speed and divide down inside FPGA).

I guess you could ignore the lack of colours on the screen. (I've not looked that close at the PCB design, perhaps there are more than 12-bits, OCS/ECS only needs 12-bits but you never know.)

But there is no getting round the CPU bit.

Hmm... Ahh well, can't have everything in the world, can you?