Re: HP87-HP87XM Autostart Battery? Message #4 Posted by Fred Ellers on 24 Mar 2000, 7:09 p.m., in response to message #3 by Joe
Joe
You read me right-I am struggling to reactivate an HP 87XM and think I recall that the early PCs had a small battery to retain some essential information and if that battery finally ran down, the PC would no longer start up. Since the HP87 has been in storage for about 15 years, i thought that might be the problem.
You are quite right in correcting me on the interface and channel. The HP87 I have was set up to use HP-IB connector, my mistake, and had mass storage set on ":d770", printer on 705 etc hence I called channel it 7.
It has turned out that the twin floppy drive was at fault and I have since found a working floppy and am slowly recovering the programs I wrote some 20 years ago. I am afraid that at one point I used a later type of 5 1/4 floppy to copy off of my original and first generation 5 1/4 disks and that is a current problem as well. The drive is an 82901M.
Some of the keyboard keys respond either slowly or not all on the first try so I am not certain but it seems to me that the HP-87 has lost some of it's memory on the HP graphics lanquage in running the plotter.
I appreciate your comments particularly since no one else has come back
Regards, Fred
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