HP-41CY re-initialization ROM
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11-03-2019, 12:10 PM
(This post was last modified: 11-03-2019 02:25 PM by Jurgen Keller.)
Post: #6
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RE: HP-41CY re-initialization ROM
I made an illustration of the problem. Maybe that helps to understand what I'm currently trying to avoid:
This picture inspired me and here is a sketch of the potential solution: This looks adventurous to say the least! As you can see I propose to set the ENROM1 instruction at a page boundary and mask the next page with a ROM. Remember that ENROM1 only works when executed in RAM. Not sure if the HP-41 hardware allows for such page crossing MCODE. I'll give it a try anyway :-) |
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