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Most recently, after formatting the flash drive with Apple HD SC setup and trying to copy ~3mb of Monkey Island to the drive: Sorry, a system error occurred. "Finder" address error After this the CF card is hosed, to the extent that it prevents booting. Then I stick it into my canon SLR...

Initializing the drive with a patched drive setup results in a very fast drive, but it's too unstable to use for anything besides benchmarks. Every time I've tried to install or copy anything, it spews bus errors. I've compared all the drive settings I could find in HDT for both slow and fast...

Ack, hold on guys. The drive is very unstable for any purpose besides benchmarking. Investigating further...

My compact flash perf issues have been fixed (though not explained). When I initialize the drive with HDT, it has a 500k/sec bottleneck. When I initialize it with a patched version of Apple HD SC Setup 7.3.5 (located here...

TylerEss, success! The CF card, when initialized with HDT was limited to 500k/sec. After I initialized it with the patched version of Apple HD SC Setup (located at ftp://grijan.cjb.net:21000/macintosh/Software/Utilities/hd_sc_setup_735-patched.sea.bin) and updated the disk driver, transfer...

I do not have an aztec monster. I have an acard 7720u SCSI->IDE and a fast compact flash card, so what I have to say is of limited value to this thread. I'm posting here because I see a similar performance limit with my setup, and suspect a common cause. The default HDT driver settings for...

ojfd, I stand corrected. I'd RTFM if I had a manual, but they're hard to find for 15 year old software. I don't want to take this thread too far off topic, but for what it's worth my flash setup displays a SCSI dialogue for the device driver, not IDE.

ojfd, HDT 3.0.2 has no such functionality outside the FWB configure app. Just volunteering info that may be relevant to the problem. Yell at someone else.

FYI, FWB Configure 3.0.2 looks nothing like that. I don't have an aztec, but my SE/30 CF card setup has similar performance, and is presented like a SCSI device, not IDE. Take a look- I haven't tried editing any of the settings. Looks like it would be all too easy to fubar up my drive.

The random read test is quite good, so any task that accesses a lot of small scattered files would do well. But yeah, I have to agree with you. At this point the only solid advantage to the CF setup is its silent operation.

Norton corroborates the results. I've timed large file transfers, too. There's a very real and unexplained 530k/sec transfer limit. None of the few jumper settings on the 7720u and CF adapter are relevant to this problem, either. Not sure where to take it from here.

I found that thread this morning, very interesting. HDT is appealing as a benchmark because it gives absolute results, rather than numbers relative to a classic or 6100. Pretty sure I have an old norton CD around. Will give it a try.

Bam. It was an ordeal getting HD Toolkit to run on this setup, as it requires 7.5.3. 500k a second is surprising, and quite a bit less than the SE/30 should be capable of. This same flash card setup did 5 megs/second on my 840av with 1500 operations. Still, the access time and seek time are...

FYI, the Acard aec7720u SCSI to IDE converter will work with an old mac flawlessly. I have system 7.5 installing on a flash card right now. The compact flash card is a Sandisk extreme IV, so I have high expectations for disk benchmarks. Will post numbers soon.

This upgrade replaces so many of the Plus's features they might as well have just made a motherboard replacement. Seriously, CPU, memory bus, scsi bus, video...after that what's the point of the rest of the Mac Plus?

Hmm, I don't quite get it either. An x-ray would be pretty useful right now. Can you verify F12? I think I should have made that one yellow instead of green.

Let me clarify, we've mapped all 86 visible leads on the board. There's still the matter of the caps and resistors. The plan is still to make a wire harness. I'm putting the Turbo 040 where the HD used to be, so I'll need the connector to be flexible. Trash80- My first impulse is to use wire...

Oh, and please do check the red pins too, just to be safe. I'm putting my only SE/30 at risk

tt - just probe the soldered edges of the resistors to see which pin they go to. If one side maps to multiple pins with zero resistance, that's likely ground or 5V. At this point there's no way for us to find out if there is anything beneath the socket, aside from x-raying it. I'll chance it.

tt - NICE WORK! I've updated the pinout with your info. We've accounted for all 86 leads that go from the CPU to the daystar slot. I've examined the capacitors on the various non-se/30 daystar adapters I own, and it looks like they're merely charge "buffers" intended to sustain +5v at all...