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50MHz 68030 Universal PowerCache!

Trash80toHP_Mini

Trash80toHP_Mini

NIGHT STALKER
68040
Belated discovery just now. I pried off the '030 to replace it with the 25MHz proc I just found, thinking I could overclock what I'd assumed was only a 16MHz accelerator. Turns out I must have read the larger, bolder 16B suffix on the the CoPro, the Proc's says 50B and the tiny print on the crystal can says 50MHz. [:)] ]'>

< does happy, happy, joy, joy dance and settles back down >

It was sent to me gratis along with the Macintosh II adapter I'd wanted for reverse engineering by mcd. He didn't have a Kanga in his collection and mine was only bracing one side of the 1400 stacks on the bookshelf. So I sent it along to someone who'd give the poor neglected thing the TLC it deserved.

What comes around goes around in my little world, to the best of my ability anyway. It's wonderful when something I've sent out into the world has come back to me multiplied. Such has happened many times over in my life. I count those blessings and hold them dear.

< realizes he's way far behind in the SE/30/IIsi PowerCache adapter cloning project .  .  . >

 
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Congrats! Mine's not universal, but it still rocks that same 50MHz 030 with FPU!

Out of curiosity, do you get the sound glitch? Mine works fine, but IIRC some people were experiencing issues with sound.

 
Can't use mine yet either, at least not until TechFury brings the LCIII back. That's the only adapter/machine combo I've got. But I've got two active adapters in hand to reverse engineer. I can at least find out what signal lines are connected by the PAL, GAL a/o ROM on board. Working on a way to brute force truth tables out of such ICs with their security fuses blown.

Working on a card spec that'll work as a IIsi or SE/30 adapter once we've got the GAL figured out for populating the cards.

 
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THX, bud, gave it a quick look, but my eyes aren't tracking together and I can't follow that kind of description anyway. I'll have to map it out in Illustrator to grok it.

 
Great stuff! Contention/bus arbitration of a bus master card in the SE/30 vs. the the way it's handled in the IIsi is exactly where the NuBus on SE/30 hack has come to a screeching halt. They use different signals for memory access, which is identified as the crucial difference between the two in DCaDftMF3e.

 
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