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Saving the state of HP41 CL to PC
12-29-2017, 07:07 AM (This post was last modified: 12-29-2017 08:30 AM by Ángel Martin.)
Post: #15
RE: Saving the state of HP41 CL to PC
The PWRX has a simplified version of the code listed in the manual, pls. refer to the previous posting in this thread. The display is showing the right information: from RAM block > to Flash Block for the YWALL case, and from Flash block > to RAM block in YRALL case.

With F01 set the 804 RAM block should also be included, which you're reporting it's not the case. That's definitely fishy.

I don't know if on V5 boards the "1F8" sector is erased by individual blocks or as a whole. As I mentioned in the previous post, the program assumes the sector is erasable by blocks, and that's why the code has two YFERASE instructions - one for the 1FE block and another for the 1FF block.

If on V5 boards the 1F8 sector erases as a whole then two things will happen:
1. the contents of blocks 1F8 to 1FD will be lost.
2. the second YFERASE will also wipe out the previous writing of RAM 800 to flash 1FE.

Hope this clarifies...

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Saving the state of HP41 CL to PC - PeterP - 12-27-2017, 11:30 PM
RE: Saving the state of HP41 CL to PC - Ángel Martin - 12-29-2017 07:07 AM



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