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HP-41 - Memory modules
04-10-2019, 02:25 AM
Post: #6
RE: HP-41
(04-09-2019 11:19 PM)albertofenini Wrote:  First of all, thanks everyone for the answers
May be, I should just go back to read the manual, so let me apology if the question was dumb.
I'll try to make myself more clear.
If I reset my HP41C by keeping pressed the Key <- , turning on and letting the key
the unit says memory lost, which is exactly what I expect and to me means the machine is empty
If I press PRGM it says 00 REG 46
Then I'm able to store data in a register up to <number> STO 16
after that, it says NON EXISTENT
If I insert the module 82106A, and repeat the reset procedure, when entering PRGM it keeps
saying 00 REG 46 while I was expecting a bigger value because of the module,
but I can store date in registers up to <number> STO 80, I get NON EXISTENT if try to store
in REG 81.
This makes me think that the module works, as I get more registers.
As I said, I should probably goes back to the basic concept of the structure which I have somehow
forgotten,
however if anyone can explain me this I will be grateful.
take care !

Adding RAM modules initially allocates the new extra RAM as additional storage registers (16 increased to 80 - which is correct as each module adds 64 registers), however you can change the allocation (between program steps and storage registers) using the SIZE command. XEQ SIZE prompts for 3-digit number, and then changes the number of storage registers to the number you specify ( 00 thru NNN-1 ).

--Bob Prosperi
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Messages In This Thread
HP-41 - Memory modules - albertofenini - 04-08-2019, 07:26 AM
RE: HP-41 - grsbanks - 04-08-2019, 07:59 AM
RE: HP-41 - Jurgen Keller - 04-08-2019, 06:42 PM
RE: HP-41 - grsbanks - 04-09-2019, 07:39 AM
RE: HP-41 - albertofenini - 04-09-2019, 11:19 PM
RE: HP-41 - rprosperi - 04-10-2019 02:25 AM
RE: HP-41 - grsbanks - 04-10-2019, 05:11 AM
RE: HP-41 - albertofenini - 04-10-2019, 11:19 AM
RE: HP-41 - Memory modules - Sylvain Cote - 04-21-2019, 01:52 PM
RE: HP-41 - Memory modules - rprosperi - 04-21-2019, 03:31 PM
RE: HP-41 - Memory modules - Sylvain Cote - 04-21-2019, 03:48 PM
RE: HP-41 - Memory modules - rprosperi - 04-21-2019, 04:17 PM
RE: HP-41 - Massimo Gnerucci - 04-10-2019, 11:29 AM
RE: HP-41 - rprosperi - 04-10-2019, 12:44 PM
RE: HP-41 - Memory modules - Dave Britten - 04-10-2019, 04:01 PM
RE: HP-41 - Memory modules - Dave Britten - 04-10-2019, 07:05 PM
RE: HP-41 - Memory modules - Dave Britten - 04-10-2019, 08:18 PM
RE: HP-41 - grsbanks - 04-10-2019, 11:35 AM
RE: HP-41 - albertofenini - 04-10-2019, 11:42 AM



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