So I’m in the process of trying to reverse engineer some custom PALs from a Commodore Amiga Dataflyer 500. It would be ideal to read those PALs directly, however I don’t have a compatible PAL reading...
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2-wire digital voltage display accuracy
I had a few needs to for a simple voltage display that can handle the range of +5v to +12v. There’s a few different applications like displaying the state of a battery, a state of a power supply and so on. I was...
HP Agilent 5382A tear down with photos
I recently tore down an Agilent E5382A Flying Lead Set. I used a Torx T-4 bit to remove the (4) tiny tiny screws. This adapter has a 90-pin connector that comes from HP logic analyzer cards, and then goes out to single...
Evaluating Battery Backup Solutions for CPAP machines
I recently had a need to provide a battery backup solution for a CPAP machine. A CPAP machine helps people, who suffer from sleep apnea, get a good night’s rest. About 20 million Americans suffer from this...
How to mount HPUX 10.20 VxFS logical volumes in a modern linux environment
This is a problem that I’ve wanted to tackle for quite some time. Since I’m using SCSI2SD and also messing around with a few different logic analyzers, I’ve got several HDD images that include both...
Effects of upgrading SCSI2SD from v5 (4.8.3) to v6 (6.2.1) analysis HP 16700A
If you compare this graph with the previous one in this post, there’s a few things you should notice: First, the overall boot is happening about 1 minute quicker, with a fully loaded chassis coming in around 2:35...
