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    Tibook power management: OS X vs. OS 9

    There's a person on the Garden that uploaded a system folder containing the 9.2.2 installation from the restore disc from my machine, and it doesn't include any extensions that look relevant. So I don't think it's drivers or anything like that. Having spent some more time with the machine...
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    Tibook power management: OS X vs. OS 9

    OK, so it is possible! Do you have anything special in extensions or control panel, beyond Energy Saver? Nothing like a Powerbook Extras extension or something?
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    Tibook power management: OS X vs. OS 9

    I bought myself a very nice 867 MHz Titanium Powerbook to run OS 9. It came with Leopard installed and I used it for a short while before I swapped the spinning drive for an SSD and installed OS 9 by mounting it as a Firewire Target Disk and copying the OS 9.2.2 installation over from my G4...
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    Development of Nubus graphics card outputting to HDMI?

    Even my G4 that can run a much higher resolution I stick to 1024x768 or thereabouts. Everything just becomes to small if I go higher.
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    Introducing (and interest check) CircuitTalk: LocalTalk for PowerMac G4

    TBH even just having labelled solder pads would be fine, an (optional) 2.54mm header would also work. I don't think that's a stupid idea at all. An internal port could also be used for USB wifi or bluetooth/wireless keyboard connectivity.
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    Introducing (and interest check) CircuitTalk: LocalTalk for PowerMac G4

    One extra external USB port probably isn't so interesting, no. I use my Lombard for making music, and once I sketched out an audio-over-USB/MIDI-over-serial interface that would fit in the battery bay (with a flex cable to the modem connector on the mainboard), but to call that niche is probably...
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    Introducing (and interest check) CircuitTalk: LocalTalk for PowerMac G4

    The Powerbook Lombard (and I suspect Pismo) use the same modem board. I put a Stealth Serial port in mine. It doesn't fit physically, unfortunately, but I did get it to work with the keyboard detached. Allegedly there's an extra USB port on the connector (see the pinout Alex Hixon published)...
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    TelePort ADB Modem Protocol?

    Yeah, it'd be a different kind of project of course. Good luck with it!
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    TelePort ADB Modem Protocol?

    I get that, but I'm wondering if it's more work to figure out how they did than to just make a new driver that acts as a serial port. Assuming that you'd be making new hardware anyway.
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    TelePort ADB Modem Protocol?

    Isn't ADB completely documented? Would it be substantially less work to do that from nothing? I assume you want to reuse their drivers, but are they really that much work?
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    TelePort ADB Modem Protocol?

    Always wondered about this one. Isn't ADB extremely slow?
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    Pro Audio Spectrum 16 PatchPanel - Schematic Development for Reproduction

    Here is some information on the custom chips: http://www.dosdays.co.uk/topics/retro_review_pas16_pt1.php
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    Pro Audio Spectrum 16 PatchPanel - Schematic Development for Reproduction

    The optocoupler is used for the MIDI input.
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    Pro Audio Spectrum 16 PatchPanel - Schematic Development for Reproduction

    Have you tried following the traces backwards from the jacks? It'll go through at least some passives, maybe the opamps. Either it goes through the custom IC or directly to the port.
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    Pro Audio Spectrum 16 PatchPanel - Schematic Development for Reproduction

    I'm counting 5 quad op amps (LF347) in the half of the board closest to the output, so I strongly doubt it's sending all-digital signals to the Patch Panel. There's also the Yamaha YMF chip, which is a synth IC, and it's companion DAC, the YAC512, so there is definitely something analogue...
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    Pro Audio Spectrum 16 PatchPanel - Schematic Development for Reproduction

    Can the computer tell if the box is connected or not? I'd put a scope on it to see what the computer is sending to the box. The MIDI lines, for instance, are bound to be more or less straight through and easily identified. As for the audio, one technique that was common in musical instruments...
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    Reducing noise in a 7100 - thoughts?

    I put a Noctua in the PSU in mine and found it did make quite a bit of difference. I also replaced the CPU fan, but I don't remember with what. As far as I remember it was hard to find something that fit. All in all it's quite a bit better now, but not perfect.
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    Reverse Engineering the Macintosh LC Logicboard

    I've made a couple of boards with QFPs and I'm not sure I will again unless forced. I had access to a fairly good setup with an oven and used stencils, and every time I populated one it was 5 minutes in the oven, then hours of sweating, shouting and self-loathing as I tried to clean up all the...
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    Reverse Engineering the Macintosh LC Logicboard

    Amazing work! Fingers crossed :) The LC was our first family computer. I wonder where I'd been without it.
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    Active ADB extender?

    I bought a 5m S-video cable with the naive expectation that it would be possible to put my 7100 in a cupboard. Unfortunately, it doesn't seem to work. Sometimes I can get the keyboard to turn the machine on, but it doesn't work after boot-up. I am running an Extended II, teardrop mouse, and a...
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