Dumping Sharp PC-1500 ROM modules

[Jeff_Birt]

I did not realize that the Rheem Heat Master was the name of the package. I thought perhaps it was model number. Line 7000 might be the main entry point with RUN "HD"...but no, line 11000 has a GOSUB 'HD'. It is a very odd layout for a program. Thanks for pointing out the name.

Both these are ROM modules that plug into the 40-pin connector on the back. As you mentioned there was also modules that plugged into the 60-pin connector on the side. This provided for a few more signals and of course there was not the size constraint you had with the tiny 40-pin module.