Easy wifi display and keyboard for the HP-75c
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09-22-2019, 09:41 AM
(This post was last modified: 09-22-2019 09:42 AM by J-F Garnier.)
Post: #16
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RE: Easy wifi display and keyboard for the HP-75c
(09-21-2019 10:24 PM)vassilisprevelakis Wrote: I know that the KEYBOARD IS command is part of the HP-75 IO ROM, but I have not found a LEX file for the HP-75 (NOT THE 71B, I have that) with the KEYBOARD IS command. I don't know such LEX for the 75, but since we have the I/O ROM sources, it could be a nice project to build a standalone KEYBOARD IS LEX file, using the HP85 assembler. As for the HP85, adapting a ROM keyword to a RAM-based LEX requires some precautions, such as replacing the absolute JMP/JSR with indexed versions, and maybe other changes that I don't remember/know. J-F |
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