68kMLA Classic Interface

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where to attach activity LED to hard disk?
Posted by: bigmessowires on 2023-11-01 18:18:27
Another intelligence test failure: I have an Apple original hard disk in my IIci. Where do I attach the disk activity LED? I see no connectors of any kind except SCSI and power.

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Posted by: volvo242gt on 2023-11-01 18:42:19
Check on the underside where the SCSI jumpers are. Usually there's a terminal to add one.

Just looked. Doesn't look like IBM provided a terminal for adding a LED.
Posted by: ymk on 2023-11-01 18:52:37
If your drive doesn't have a header, you can add an LED (with resistor) between TRMPWR(+) and /BSY(-).
Posted by: LaPorta on 2023-11-01 18:53:22
Those drives don't have them for certain. There is usually a dual pin terminal on the front of the drive. Does the IIci have a disk light? Ignorance here: I have never used a IIci.
Posted by: Juror22 on 2023-11-01 18:58:54
M
Does the IIci have a disk light?
Yes it does.

For the specs on drives (as well as other items), a nice easy check is here at stason.org (here is the page for this drive) https://stason.org/TULARC/pc/hard-drives-hdd/ibm/DSAS-3360-DESKSTAR-365MB-3-5-SL-SCSI2-FAST.html
Posted by: volvo242gt on 2023-11-01 22:19:58
Those drives don't have them for certain. There is usually a dual pin terminal on the front of the drive. Does the IIci have a disk light? Ignorance here: I have never used a IIci.
Yup, just like on an SE or SE/30. Both the IIcx and IIci have one. Is in the upper right corner, just below the case lid. You can barely make out the lens for it in my avatar.
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