Was I dreaming when I remembered this....

[tonyyeb]

... didn't someone come out with some kind of accelerator card for the A600 that fitted over the 68000?

Cheers

[DoogUK]

I know the apollo A630 and A620 accelerators did.


Edit: looking on the big book of amiga hardware all accelerators for the A600 did.

[Darrin]

Why do I get the feeling that this is going to lead into a discussion for a "clip on" accelerator for the MiniMig v1.1.

 :-D

[bloodline]

A massive waste of time! I don't know why the MiniMig doesn't just have the 68K signals run to the edge of the board, for an edge connector.

[motorollin]

What boards would that allow us to use? A2000 accelerator cards?

--
moto

[bloodline]

None of the Amiga boards would work as the MiniMig is 3.3Volt and the Amiga is 5Volt... and I was only suggesting providing the 68K signals, not all the other gumpf the Amiga connectors provided. I suppose one could build a proper Edge or CPU conector on the MiniMig, which would bump the Voltage as well as provide the proper signals.

[motorollin]

Cool! Of course the Minimig is supposed to be an all-in-one solution, so removing the 68000 would be against the idea of the Minimig. But maybe a future version could have the 68000 on an Amiga edge connector-compatible card which could be removed and replaced with an accelerator if desired.

[EDIT]
Thinking about it, real Amigas can have a built-in CPU and a connector for an external one, so no need for the 68000 to be removable - just an EXT jumper I suppose?
[/EDIT]

--
moto

[downix]

I actually have a CPU connector for MiniMig designed, but finding the right socket/edge design is a pain in the butt.

[bloodline]

downix wrote:
I actually have a CPU connector for MiniMig designed, but finding the right socket/edge design is a pain in the butt.

I know I'm being a pain... but couldn't you add a shifter and then serialise the 68K bus, I'm pretty sure it could be done if the Serial bus ran at a much higher rate than the 7Mhz 68k... that way you'd only need a few pins to connect with... more expensive logic, but simpler connector..

[ChuckT]

I suppose you could just add jumper wires or posts to add on another board:

http://www.expresspcb.com/

You can get connectors from here but I don't know if they have what you want:
http://www.digikey.com/

I was reading here that you could add posts or copper wires for connectivity:

http://www.ddj.com/hpc-high-performance-computing/206504117

This site can make plastic housing for the Minimig:
http://www.envplastics.com/

[bloodline]

ChuckT wrote:
I suppose you could just add jumper wires or posts to add on another board:

http://www.expresspcb.com/

You can get connectors from here but I don't know if they have what you want:
http://www.digikey.com/

I was reading here that you could add posts or copper wires for connectivity:

http://www.ddj.com/hpc-high-performance-computing/206504117

This site can make plastic housing for the Minimig:
http://www.envplastics.com/

Ok, that would give you a Clockport style header, but with a full 68k Bus... that would seem the most sensible idea... cheap and simple.

[freqmax]

Just use this:
http://www.xilinx.com/products/silicon_solutions/fpgas/virtex/virtex4/capabilities/powerpc.htm
"Virtex™-4 FX platform FPGAs provides up to two PowerPC® 405, 32-bit RISC processor cores in a single device."

The softcore MC68020 etc.. + AGA chipset can then be fitted in the logic matrix with room to spare.

No need for connectors, serialisation etc..
Hm, Dual PowerPC.. now that would be a cool "accelerator" :crazy:

[bloodline]

freqmax wrote:
Just use this:
http://www.xilinx.com/products/silicon_solutions/fpgas/virtex/virtex4/capabilities/powerpc.htm
"Virtex™-4 FX platform FPGAs provides up to two PowerPC® 405, 32-bit RISC processor cores in a single device."

The softcore MC68020 etc.. + AGA chipset can then be fitted in the logic matrix with room to spare.

No need for connectors, serialisation etc..
Hm, Dual PowerPC.. now that would be a cool "accelerator" :crazy:

Even with only one PPC... there simpy wouldn't be enough room for even the current Minimig... otherwise it would make a good chip to use!

[alexh]

If anyone is gong to develop another MiniMig board, they could do worse than put a 68040/68060 socket down.

A 50 euro MC68060RC50 running at 100MHz will be better than anything you can get in an FPGA for many years to come.

[freqmax]

Yep, but that MC68060RC50 also need some serious soldering. I think that it's possible to get away with a of-the-shelf developer board with softcore cpu.

Btw, who sold those 50 EUR CPUs?