HP-71B Enhanced Math LEX

[Dave Frederickson]

(08-20-2020 08:11 PM)Erwin Wrote:  

(08-14-2020 09:06 PM)Dave Frederickson Wrote:  I will concede that the "ROM" image is available if we're following the same understanding as in the HP-71B Software IDS Volume 1, Sect. 3.6 Plug-In ROM and Independent RAM.

"The format of a plug-in ROM module is the same as for a RAM module configured as an Independent RAM, with the exception of the first eight nibbles of the module which contain the Stand Alone Module ID."

"Throughout the following discussion, the term ROM will be used as a general name for a stand alone memory module, whether it be a plug-in ROM module or an Independent RAM."

Hello, so as far as I understand it makes no difference how to define the math module?

It makes no difference as long as you don't plan on running the Service Module Plug-in ROM diagnostic. In that case the diagnostic reports an error as the image doesn't have ROM checksums as defined in the IDS.
As an alternative, the "PorT" command PTTEST$ from the CMT TOOLS can be used to verify the IRAM/EPROM checksum.