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HP-41CX w/ XF-Module - just curious
07-25-2019, 07:06 PM (This post was last modified: 07-25-2019 07:06 PM by Sylvain Cote.)
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RE: HP-41CX w/ XF-Module - just curious
(07-25-2019 07:00 PM)JurgenRo Wrote:  
(07-25-2019 04:16 PM)Sylvain Cote Wrote:  
(07-25-2019 12:44 PM)burkhard Wrote:  →So... Would the Extended Functions / Memory Module plugged into a CX add any Extended Memory? Would the user now have 248 (=2×124) extended registers?
Incorrect, the RAM part of the X-Function/Memory (inside the CX or in the plug-in module) is hardwired to memory address 0x040 to 0x0BF.
So when you plug a X-F/M module into a HP-41CX you create a bus contention because the internal module and the plug-in module actually fight to put their memory into the same address space.
It would seems that I was too technical and thus not clear enough, the simple answer is no, even if you plug a X-F/M into a CX you still only have 124 registers available.
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RE: HP-41CX w/ XF-Module - just curious - Sylvain Cote - 07-25-2019 07:06 PM

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