Stuttgart HP Meeting 2024 (replacement Allschwil)

[Dave Frederickson]

(10-21-2024 12:25 PM)rprosperi Wrote:  

(10-21-2024 05:27 AM)Dave Frederickson Wrote:  ROMCOPY may alter the checksum. Depending on the size of the image, ROM and EPROM checksums may be in different memory locations. The dump routine in the Emu71 manual provides a correct dump.

An ongoing topic with different views... lol

A. Dave feels preserving checksums, which aren't used by anything, is important, and extra effort is justified to do so.

B. Bob feels preserving checksums, which aren't used by anything, is not important, and can be safely ignored, saving time and energy to ridicule class A. believers.

I suspect most h/w oriented folks are type A and s/w oriented (and lazy) folks are type B, but 've not conducted research to verify this.

Then there's type C, like HP, who identified the Finance ROM as an IRAM and not a ROM. How should this ROM image be archived?

Checksums are used by the Diagnostic ROM and the CMTTOOLS.

ROMCOPY's purpose is to generate checksums. If checksums aren't important when copying EPROMS then use EPRMCOPY instead which won't insert checksums where they don't belong.