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HP Forums / HP Calculators (and very old HP Computers) / General Forum v / HP Portable PLUS Prototype

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HP Portable PLUS Prototype
07-06-2014, 04:28 PM
Post: #1
Dave Frederickson Offline
Senior Member
 		Posts: 2,249
Joined: Dec 2013
HP Portable PLUS Prototype
Here're some pics of my Portable PLUS prototype. The computer was received with the enhanced display, but has been returned to it's original configuration thanks to a forum member.

Click images to zoom.

[Image: Front.JPG] [Image: Back.JPG] [Image: Bottom.JPG]

That's the Portable PLUS side of the 82985A Monitor Interface where the battery door is located. The serial number has been penciled-in to be visible. Note the 9999 date code.

Boot screen showing the Config EPROM version 1. Production units had alpha versions.

[Image: Boot.JPG] [Image: MB.JPG] [Image: Mon+Con+.JPG] [Image: MEM.JPG]

The motherboard doesn't have a battery disable jumper and the plastic shield over the battery's positive terminal is hand-made.

Dave
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HP Portable PLUS Prototype - Dave Frederickson - 07-06-2014 04:28 PM



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