HP-71B MultiMod ROM Emulator User Manual
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01-18-2021, 04:39 AM
(This post was last modified: 01-18-2021 08:30 PM by Sylvain Cote.)
Post: #3
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RE: HP-71B MultiMod ROM Emulator User Manual
Mark,
I did a first pass reading and I have not completely double checked with the Hardware IDS but if you follow the H-IDS, then there is an error at page 6: this line Code: -------[ROM ID code]-------- Flag Addr Chip ; Comment should be Code: -------[ROM ID code]-------- Flag Addr Chip ; Comment There are other errors in the example, if I have understood correctly of course. From what I can deduce, the only reason the Flag field exist is because you need a way to specify the hard-coded ROM, otherwise the [Nibble 4 : Last Chip] field should be enough. Sylvain 5-nibble ID code as described in Hardware IDS Nibble 0 : Address Space Size Code: Value Memory Size Nibble 1 : Reserved Nibble 2 : Device Type Code: 0 : RAM Nibble 3 : Device Class Code: Memory : 0..F : Unassigned Nibble 4 : Last Chip Code: bit 3 : Last chip in module Edit: rework Address Space Size table to add byte sizes |
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