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    ATTO Silicon Express IV Nubus

    I have read some comments here and there suggesting the Silicon Express IV is not bootable. I have just acquired one, and I can confirm that it IS in fact bootable, at least on a Quadra 800, which is the only Mac I have thus far tested it in. The same rules apply as with the SE II - it will...
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    Badly distorted CD audio on Quadra 650/800

    I have a Quadra 650 board converted to a Q800 and installed in my Q800 chassis, with the original caddy loader cd rom drive. System audio on the internal speaker seems to be working completely normally, games etc. all sound fine. Last night, for no particular reason I thought I'd put an audio...
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    Ultrasonic cleaner appears to have killed my Quadra 650 board....

    Man I am having such bad luck with this. I bought another board recently after multiple failed attempts to fix the scsi bus on my Q800. The board I bought had been battery bombed, but the damage was really minimal and it still worked just fine. It had some very minor trace damage and corrosion...
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    ATTO Silicon Express II Nubus

    I recently bought one of these to try out - google turns up almost nothing about this card, so I thought I'd document what I've learned about it. 1. It is bootable, at least on a Quadra 650/800, haven't tried any others yet. It will not find a bootable disk on it's own, but if you boot by some...
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    What is the typical failure mode of resistor networks? (Dale 472G)

    While chasing scsi problems on my Quadra 800, I have determined that RP4, a Dale 472G (bussed, 4.7K) has some abnormal readings on a couple of it's legs, and those same legs do have continuity to the some legs 53C96 scsi controller (no extensive testing yet, not sure which legs specifically)...
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    Advice for diagnosing scsi failure on Quadra 800?

    Any hints or pointers gratefully received! Symptoms: Machine was working fine, I have been using it probably a few hours every other night over the last few weeks, booting from a SCSI2SD v6 attached to the internal scsi. Couple of days ago it started cold booting to the flashing ? disk, but...