adapting sidecar to CPU fast slot connector

[Jope]

Since you've gotten that far, it shouldn't be a difficult task for you?

You need to change the card edge into a female connector (perhaps use two 86 pin connectors and a load of wire) and then you need to get the missing signals from the A500's motherboard. (check the schematics for those)

Try and keep the wires as short as you can.

Some cards might have problems - I'm willing to bet that the A2000 bus has some minor differences in comparison to the A500.

[Jope]

Is there a 28Mhz clock signal available on the A500 mobo?

Yes! Look at the schematics near the Agnus, IIRC.

[Jope]

that_punk_guy wrote:
http://www.aminet.net/hard/hack/2000slot.lha ?

I don't know if that's what you're after, but just in case you haven't come across it yet... :-)

That's for a Zorro II slot.

[Jope]

Cyberus wrote:
Well, what I meant is, how do I go about getting the 28MHz to  the connector? It's just a case of taking it off the clock line on the motherboard and soldering a wire to pin 9 of the female connector on the mobo?
Or more importantly, a better question would be:
Is, and why is, the clock signal needed by an accelerator sitting in the CPU fast slot? Surely the accelerator generates its own clock signal?

Well, if you like, you can try it without the 28MHz signal, bu t otherwise you need to snipe it off the A500's mobo somewhere. Check the schematics. The Agnus has a 28MHz pin IIRC.

[Jope]

The A500 edge connector puts out a 7Mhz signal right? It's a long shot but one could include a clock multiplier to feed the 28Mhz pin on the adaptor? Maybe that wouldn't sync properly, I don't know

Yes, why not.. I guess that's what the Supra Turbo 28 did..

Then again, since this is a homebrew mod requiring a ton of wire anyway, one more can't hurt so it can be tapped off the Amiga's internal 28MHz clock. :-)