In Search of 15C+ ROM image

[Stevetuc]

(07-08-2022 04:11 AM)Divasson Wrote:  

(06-24-2022 04:30 AM)Katie Wasserman Wrote:  Version 4/11/11

Version 4/15/11

Version 8/19/09

Hi all,

Has anyone implemented the changes in the original HP15c ROM to be able to address 128 registers? Does anyone know what is the required patch? (apparently it did not involve many bytes, and the actual memory seems not to be an issue in the Atmel implementation) I know there have been some discussions about it but cannot find actual details on it.

This is discussed in an earlier archived thread.
https://archived.hpcalc.org/museumforum/...08646.html
Olivier De Smet has produced a rom patch with 224 registers and J F Garnier one with 192 registers.
Hopefully they will make the patches available on the forum.