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  1. O

    How Does One Explain The Difference In The Size & RAM Usage Of Modern Operating Systems?

    A couple of things that might or might not be correct: - Doesn't RISC generally require larger executables? So the switch from 68k to PPC would have automatically increased code size. - Certain modern processor features require a lot of overhead. Multithreading comes to mind. - To allow true...
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    Macintosh SE/30 logicboard recreation (thread revival)

    Same here. One board; two if it helps getting the order through (or getting into a different volume discount region).
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    Macintosh SE/30 logicboard recreation (thread revival)

    While I'm not sure I'm up to the task I'd still also spring for one board.
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    TAM screen gone blank

    Perhaps because it's CMD-OPT-P-R?
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    which macs need recap

    I seem to recall that the power supplies in the MDD G4 failed quite often; and I think this was also a cap issue.
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    System 6 MIDI Playback/Softsynth Software?

    The "processing horsepower" was definitely lacking in earlier Macs. Incomplete Quicktime Musical Instruments (essentially a preset sample player) were introduced with Quicktime 2 which in turn required System 7. I don't completely remember if the instruments also required an 68030 or higher or...
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    I'm considering buying a Macintosh SE/30, the seller said it has some defects. Is it worth it?

    Check the completed listings on ebay for SE/30s that were actually sold. 300 € might be reasonable for a unit in good condition. Computers that boot but show problems seem to sell for under 200 € in general. But admittedly the prices can also be on the high side. To give you an idea: During the...
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    Trying to fix a IIsi - Power supply oddity + possible display issues?

    I was able to make the IIsi talk to a NEC Multisync EA190M and a Panasonic Panaflat LC50s but not to a DGM 19" display. The latter works with nearly all my classic Macs though - but it also refused to cooperate with a NeXTstation so maybe it's the display itself. I think NEC MultiSync monitors...
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    SE/30 recap with lifted pad

    A couple of interesting things in this circuit: AGND and CMMGND pins are both connected to digital ground. Usually AGND signifies analog ground. For some reason both sides also have different capacitor values for identical circuit positions: C6 is 1uF while C24 is only 0.1uF. Also, the...
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    Video Output Frequency of Macintosh LC - 25hz??

    As I said I will be able to make detailed tests only after I got it recapped. It might well be that you are correct about this. My experiences come mostly from a (recapped) IIsi (same timeframe albeit different video subsystem) which is behaving somewhat strange in the video department. I'm...
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    Video Output Frequency of Macintosh LC - 25hz??

    LC arrived. Dead power supply, logic board probably needs a recap too. But it boots in general. Tests will have to wait after I got everything in order.
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    Video Output Frequency of Macintosh LC - 25hz??

    I'm not sure about this. My experiences with a IIsi are similar: adapter and monitor work with a different computer, adapter works also with the IIsi and a different monitor. Perhaps there is a sync signal that somehow differs. Anyway, I'll be getting an LC soon (condition unknown) and will run...
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    Mac LC and DB15 to VGA adapter problem...

    Not sure if it is "working" in the complete sense. (Please correct me if I'm wrong.) That the floppy gets ejected immediately seems to indicate that the LC is not booting from the hard drive. Hence it's waiting for a bootable floppy - which the floppy in the movie obviously isn't. If it were...
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    Mac LC and DB15 to VGA adapter problem...

    Yes, the "Pomeranian" part gave this away somewhat. Anyway, I've recapped a IIsi, a Performa 475 and an SE/30 so far; so if everything else fails it would at least not mean shipping the machine around the globe... Another thing: I think without the VRAM upgrade the LC supports only 512 x 384...
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    Mac LC and DB15 to VGA adapter problem...

    Dresden, Germany. If you were located in Zgorcelec or Jelenia Gora...
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    Mac LC and DB15 to VGA adapter problem...

    Just out of curiosity: Roughly where in Poland are you located?
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    Mac LC and DB15 to VGA adapter problem...

    I don't think I've seen such an LC "in the flesh" myself so far; the ones I've seen always had the (unused) cutout for a second floppy drive. So it seems Apple made a case revision at one point. I'm only mentioning this since you talked about buying a second case which seems to be constructed...
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    Color Classic II without audio

    Having separate digital and analog grounds is not uncommon where I come from; no idea if this is also done with the Classic II though. Usually those are then tied together at a single point in or near the power supply (unless there are also separate supply lines for digital and analog IC's)...
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    Apple "mistake? video 512 x 342 vs. 512 x 384

    3 - 6 - 12 - 24 - 48 - 96 - 192 - 384 - 768
  20. O

    Apple "mistake? video 512 x 342 vs. 512 x 384

    Another thing worth considering: The Apple II had a vertical resolution of 192 pixels - exactly half of 384...
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