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Regarding its worth-
You're the first person I know of that has one of these genuine Daystar SE/30 adapters. That doesn't necessarily make it valuable though, the availability of japanese adapters with an extra PDS pass-through slot (which yours lacks) puts a ceiling on its worth. I'd wager...
Bunsen, that was my thought exactly. Didn't Magma make a nubus expansion chassis?
I was mostly trying to get a decent Marathon frame rate out of my SE/30. Even with a 40MHz 68040 my colorboard 264 just can't push enough pixels, even though PDS is (supposedly) much faster than Nubus. I don't...
zuiko21 - interesting. Given the damning evidence of multiple FPUs I'll find some time to do surgery on the IISI card.
Bunsen - agreed about the oscillator. Looks like the nubus hz is independent of the PDS hz. Testing a nubus card in the SE/30 is problematic though, the monitor tube is...
The thread previously mentioned is here http://68kmla.org/forums/viewtopic.php?f=7&t=14479&p=141865
I replaced the 40mhz oscillator on the nubus adapter (same as a IISI's main oscillator) with a 31.3344 oscillator (same as the SE/30). It was a long shot, so I kept my expectations low...
Bunsen mentioned in the other thread that the IISI nubus adapter might be hard wired to work with a 20mhz system (like the IISI). Over clocking the SE/30 to 20MHz isn't an option, so I under-clocked the nubus adapter to match the SE/30's 31.3344MHz oscillator. No effect. Still zebra'd.
Now...
Does not work. The SE/30 zebra striped and wouldn't boot. A definitive bust. There's no mention of this in any of the forum searches, so I thought I'd throw it into the public knowledge.
My only guess is that it has something to do with multiple 68882s in the system at once. But the only...
It shouldn't hurt anything. The whole card is 5V, so no chance of mixing voltages. There's only about 4 pins that differ between the cards, and they're signal, not power.
Trag- that's plausible. I'm going to experiment with variable numbers of caps to see if it makes a difference. I'll be using a Turbo040, so if anything has power requirements enough for this to matter, that's it.
tt- the project is happening, but on hold due to obligatory holiday vacationing...
TT, I'd be surprised if it worked. The PLA chip on the daystar adapter connects to pins on the powercache that, according to apple's cache slot spec, are unused. This means daystar was leveraging unused cache slot pins in an ad-hoc fashion. These pins are inactive when the card is in a IICI...
I've managed to get my hands on a IICX adapter, and have completed the pinout page. In theory, this diagram could be used to wire up an adapter between Daystar accelerators and any 68030 socket.
http://hiddenkingdom.net/temp/pinout.htm
My only remaining question is this: the card has 8 small...
I count 96 pins, which rules out the IICI or IISI/SE30 which have 120 pins. The LC PDS is 96 pin, but it's electrically incompatible with the SE.
That card was made for an SE. As for the fitment issues, who knows?
From what I've observed, the four factors are the scsi-ide bridge, the scsi bus, the driver, and cpu speed. All other things being equal:
1) An IDE drive and an IDE CF card exhibited equal performance problems when used with the bridge
2) The choice of driver made a profound difference in...
I've tried both Apple HD SC Setup and Drive Setup 1.6.
I'm much closer to solving this now. The issue is in how Drive Setup is patched with device settings so it recognizes the flash drive.
Using ResEdit, I would open Drive Setup and add a device entry called "SANDISK,*", which would then...
I'm using a vanilla install of 7.5.5, which lacks a scsi manager extension. Just to recap:
Initialize the CF card with HDT = slow but functional
Initialize the CF card with patched Apple HD SC Setup = fast but hard system crash within seconds of writing data to it. Afterwards, system will...
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