HP41 ROM images related: started it all over again Message #5 Posted by Vieira, Luiz C. (Brazil) on 22 Nov 2009, 8:03 p.m., in response to message #4 by Meindert Kuipers
Hi, Meindert;
thanks again for your (always necessary and welcome) advise.
I transferred all HP41 related data I have about the HP41 (>4GB) to a laptop (Acer, could not afford an HP) and then I started it all over: I set comm speed to 181.82kbps (32), JTAG speed to 146.3kbps (40, half of the default speed), USB Timeout to 1000 msecs, FLASH prgm and Sector erase timeout to 2000 msecs. Then I uploaded the 1.51 firmware version to the MLDL2018A again and erased all its memory. Now I am (slowwwwly) uploading all ROM images again. Well, now I think I am eliminating some, if not all, future issues.
In time: I used HEXEDIT to inspect the interrupt locations and ROM versions of the three printer ROM I mentioned in the beginning of this thread, from within the interfaces themselves, i.e., their original ROM data, not their images, and found out they have identical values stored on them. The discrepancies I found were not from the ROM modules. Lotta work to do, then...
Best regards.
Luiz (Brazil)
Edited: 22 Nov 2009, 8:07 p.m.
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