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HP Classic Series Display Driver
11-14-2016, 11:04 AM
Post: #15
RE: HP Classic Series Display Driver
(11-14-2016 07:45 AM)PANAMATIK Wrote:  Hi Harald,

"Make Classics great again".

A very nice and awesome project. Impressive! My congratulations.

It is a full repair kit for the classic models (not display drivers and card reader).

How can I order?

If you need some help for the HP-55 and 70 emulation, please ask.

I made a similar design for the woodstock models, which replaces the complete board, but still no prototype made. If I finally make it, it will consume only 20mA when display is on and nothing in sleep mode. It will have real Continuous Memory because it never will be powered down, and it can display alphanumeric like yours, and of course Infrared printing and GPS.


Hi Bernhard,

most of the work was done by Tony. The PIC is running his code and he adapted it for the different keyboard layout and wrote the code to send the display data to my controller. I struggle a bit with the huge, but very impressive PIC assembler code he has written. I have done a bit of assembler programming on Atemels, but no where near to this level.

I was going to give a few prototypes to people who would like to play with them. I'll put you on the list Smile

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HP Classic Series Display Driver - Harald - 08-31-2016, 01:41 PM
RE: HP Classic Series Display Driver - Harald - 11-14-2016 11:04 AM

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