Eprom rom dump issue

[rprosperi]

(06-12-2019 10:21 PM)Dave Frederickson Wrote:  When in doubt, examine the image with a hex editor. If the first eight bytes are "3BDDDDED", the Stand Alone Module ID or "IRAM Identifer" then the image is an IRAM, otherwise it's a ROM.

Of interest is the Finance ROM, which has the IRAM Identifier.

https://www.hhcworld.com/files/HP71COMPE...INANCE.ZIP

From the checksum bytes I see that you've version 6.2A of the AMP ROM set. I'm missing ROM02 from that set. If you have it could you please post an image of the EPROM?

Thanks,
Dave

I was going to mention that even one of the HP ROMs ignored the checksum, but I never recall which one it is.

How the heck can you tell the ROM version from just the checksum bytes? Has someone posted all the checksum bytes for these ROMs?? You have amazing recall Dave.