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Updated 2023-07-12: Hello, Guest! Welcome back, and be sure to check out
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trag's latest activity
T
trag
replied to the thread
Soldering new vram onto Quadra 630 motherboard?
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Very cool. Did they ever use this newer Valkyrie design in any machines? Unfortunately, it doesn't seem to do a contrast/compare...
Feb 27, 2024
T
trag
replied to the thread
SCSI for Dummies Thread - How to properly use SCSI
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That's the article I wrote way back when. By today's standards, way too much detail on the soldering and probably some of the...
Feb 26, 2024
T
trag
replied to the thread
Soldering new vram onto Quadra 630 motherboard?
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Because these are DRAMs, they interleave the addresses. So adding one address line would add two address bits to the address space...
Feb 25, 2024
T
trag
replied to the thread
Do 32-pin, 400mil SOJ sockets still exist?
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They're great. They have weird sockets like the ROM/cache sockets for many old world PCI Macs (x500, 6400, 6500, X100 PDS, G3 Perch)...
Feb 25, 2024
T
trag
replied to the thread
Attempting to patch the SuperMac S900/Umax Pulsar's Open Firmware with "The Great Gazelle PCI Hack"
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Whether the Bandit is "seen" at F2000000 or F4000000 seems to be determined by how pins 186 and 187 on the Bandit are biased. In other...
Feb 25, 2024
T
trag
replied to the thread
Replacement Power Supply in Quadra 605
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I think that Phoenix Connectors also has those connectors. At least, I remember sourcing some for adapting ATX PS to the Umax S900...
Feb 25, 2024
T
trag
replied to the thread
How fast does the IWM/SWIM communicate on the bus?
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Did you see the work where the HD20 (floppy interface) was analyzed and I can't remember the result -- some kind of peripheral was...
Feb 25, 2024
T
trag
replied to the thread
ZZJ's Shenanigans
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Unsolicited, but my experience with UTSource is that many (most?) of their listed prices on parts are a fantasy. Request an actual...
Feb 25, 2024
T
trag
replied to the thread
Attempting to patch the SuperMac S900/Umax Pulsar's Open Firmware with "The Great Gazelle PCI Hack"
.
I may not have been reading the 2.1 spec, but what I remember is 4 PCI slots (interchangeable devices) or 10 fixed devices for signal...
Feb 25, 2024
T
trag
replied to the thread
Attempting to patch the SuperMac S900/Umax Pulsar's Open Firmware with "The Great Gazelle PCI Hack"
.
This probably isn't helpful for the effort at hand, but.... The PCI Device Numbers (F, E, D) are which PCI Address line is tied to the...
Feb 25, 2024
T
trag
replied to the thread
SCSI for Dummies Thread - How to properly use SCSI
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Software and flash chip are larger on the PowerDomain than on the PC version of the card. The PC firmware won't fit. It's been more...
Feb 25, 2024
T
trag
replied to the thread
Mac OS 8.6 for (some) Unsupported G3s and G4s
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The G4 Mac Minis came with a 7447a processor and an ATI Radeon 9200 graphics chip. Is this adaptation of 8.6 likely to work on the G4...
Feb 23, 2024
T
trag
replied to the thread
Re-finish IO shield for SE/30 reloaded?
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Yes. I had to find my old posting because I couldn't remember...
Feb 12, 2024
T
trag
replied to the thread
Re-finish IO shield for SE/30 reloaded?
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What metal is the SE/30 shield? IF it is iron based, then a wash of phosphoric acid is a good choice. I've bought this treatment...
Feb 12, 2024
T
trag
replied to the thread
7100 questions
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We've also seen a few users where the SCSI connector (DB25) is just so old that it's dirty/oxidized. A good contact cleaner spraying...
Feb 6, 2024
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