Post Reply 
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...
Find all posts by this user
Quote this message in a reply
Post Reply 


Messages In This Thread
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



User(s) browsing this thread: 1 Guest(s)