joevt's latest activity
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Hey Guest, MARCHintosh 2026 is upon us. Check out community projects, join GlobalTalk, and have fun!
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Jjoevt replied to the thread Shopping for Power Macintosh 7300 ram.Service Source for the 7300 says the DIMMs must be 5V and that fast paged DIMMs also work...
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Jjoevt replied to the thread Beige PowerPC G3 - IDE HardDrive Replacment?.They all have different version numbers and therefore different 3 MiB checksums and different 4 MiB checksums. They all have different...
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Jjoevt replied to the thread Reconnaissance: Modern Diagnostics for your Classic Mac.I had some more Serial Test Manager notes at https://tinkerdifferent.com/threads/new-diagnostic-tool.4593/post-39652
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Jjoevt replied to the thread Beige PowerPC G3 - IDE HardDrive Replacment?.Does that apply to all 4 revisions of the Beige G3 firmware? Does that apply to Mac OS 9 as well? I've seen Mac OS 9 is able to see...
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Jjoevt replied to the thread Imaging a Bootable Mac OS 9 CD the Hard Way.Was this image 2352/2048 times bigger than the partition created from disk2s1? If so, then it does contain all of the partitions. It's...
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Jjoevt replied to the thread Imaging a Bootable Mac OS 9 CD the Hard Way.A CD has multiple "slices": diskutil list /dev/disk18 /dev/disk18 (internal, physical): #: TYPE NAME...
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Jjoevt replied to the thread USB-Serial Adapter and Cable Options.My serial cable notes at #10
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Jjoevt replied to the thread Reconnaissance: Modern Diagnostics for your Classic Mac.Old World Power Macs have a Serial Test Manager (STM) On a Power Mac G3, it has a menu and prompt like this: >...
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Jjoevt replied to the thread Apple Network Server 700 boot issue.The default boot-device is disk2:aix disk2 is a devalias for /bandit/53c825@11/sd@2,0 The default diag-device is cd fd:diags which I...
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Jjoevt replied to the thread Battery bombed motherboard challenge.Is it the first of these? 1987-03 - 97851DB6 - MacII (800k v1) 1987-12 - 9779D2C4 - MacII (800k v2)
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Jjoevt replied to the thread Drop-In G4 CPU transplant: To G3 B/W from G4 Yikes possible?.My suggestion of creating an Open Firmware script to patch the firmware won't work if you can't boot into Open Firmware. Startup the...
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Jjoevt replied to the thread Apple ][ Card Audio Characteristics.Apple II sound is 1-bit but it's not just a square wave. There's same oscilloscope captures in this video:
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Jjoevt replied to the thread Drop-In G4 CPU transplant: To G3 B/W from G4 Yikes possible?.The firmware updaters from PowerLogix and Sonnet for G4 upgrades do not appear to be in the form of an Open Firmware script so they...
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Jjoevt replied to the thread Apple Network Server MacOS based ROMs found.@startvec.>'excp stores the default exception handler which is _exception This does a throw of the exception vector number. Maybe it can...
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Jjoevt replied to the thread Apple Network Server MacOS based ROMs found.I have a Trace for Open Firmware script that can show what's getting executed. It needs more work but can do some simple stuff. It...