ACT available

[PANAMATIK]

"HP-29E Ir" printing!

After IR printing on HP82240B with the "HP-25E Ir" was already possible since some weeks, today I made the HP-29E ready for printing its 98 program steps in PRGM mode, and I added tracing operations in RUN mode. Because the HP-29 has additional mnemonics and different internal program codes compared to the HP-25, I still had to work on this software part and needed double the time, because the ACT flash program memory is completely full! But finally I got the HP-29E to become a real IR printing device.


I also found the (what I think) best place for the IR diode.



I made only two 1mm drill holes behind the diode, where its pins can be plugged into a socket, which is fixed inside the case. Thus you can remove the diode for charging. Or you don't use the charger at all, because internal charging isn't recommended anyway. Then you can fix the diode at this place without socket. Internally two small wires are connected/soldered to the new ACT.

Next image shows a printout with some typical HP-29C mnemonics like LBL , STO i, RTN etc. without any meaning. I programmed all possible instructions and read the internal program codes by the ACTs serial interface and then implemented a decoder for them.



In about two weeks I will release the IR Version 1.04 for field update.

For anybody, who is interested in how the IR printer is implemented, you can have a look into the source code.

https://drive.google.com/file/d/0Bwx8KUf...sp=sharing

There is also the table of all HP25/ HP29C program step codes for download

http://www.panamatik.de/ProgramCodes.pdf

Bernhard