Multi Calculator Kit

[PANAMATIK]

(10-28-2017 09:56 AM)Harald Wrote:  Hi Bernhard,

As far as I know, all the models included in Tonys software are true emulations running the original microcode.
My bord will support all the modells Tonys board does.
The big advantage of using the original display drivers is, that no soldering is required and the modification is fully and easily reversable. The downside is that the display drivers cannot be turned off and therefore a low power version is not possible. The difficulty with the original HP display drivers is, that they supply the system clock and data to the drivers has to be synchronised to that clock and the timing needs to be fairly accurate. This is why I have used a (renesas) controller with a DMA to interface between Tonys PIC and the HP display drivers.

The Main advantages of Bernhards boards is above all (in my opinion) the low power mode and all the fancy features on top of the emulation of the original models.

Cheers,
Harald

Thanks for the corrections. I didn't know Tony emulates all the ROM codes. I just calculated how this could be done with 128k Flash. The sum of all ROM codes of all models is more than 128k. Surely he compressed the 10-bit codes, this would be still 80-100k, but leaving about the same amount for PIC code as in my concept.

I will definitely want to have your Classic board.

Bernhard