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grsbanks · (This post was last modified: 06-21-2017 12:37 PM by grsbanks.)

Any group of 4x7 bytes that is all zeros is omitted from the dump, so if you don't see the lines 0x00 or 0x04 then there's nothing in there Smile

The other registers aren't dumped because they don't exist. They are part of the Saturn CPU register set, and the Saturn CPU is an evolution of the Nut processor in the '41.

BTW, I'm working at full speed on a tool to decode/encode raw files for the soon-to-come DM42 right now but a lot of this can also be used for the DM41 since the DM42/HP-42S uses an extended version of the DM41/HP-41C instruction set.