GRAPH-LEX 71

[J-F Garnier]

Great attempt to rebuild the "GRAPHIC module" for the HP-71B !
I didn't work on this part of code since 2006 !

Indeed the LEX is based on the poll handler mechanism, and so could be expanded to support other types of graphics devices, such as HP-GL plotters or graphics displays.

Actually, one reason why I didn't go so far in the poll handler code disassembly and documentation is that, at the time, I had the project to rewrite this part for an HP-GL plotter. I have a special relation with HP-GL, for reasons that the readers of my article in the RCL 40 book will understand.

I gave up with this project, that would have been fairly complex since the poll handler interface is not documented, and the interest is finally very limited for me, I don't have any HP-GL compatible devices to drive.

J-F