41CL: Can someone to explain this index?

[Ángel Martin]

(07-03-2018 09:58 AM)Podalirius Wrote:  in the instruction to insert the Library#4 in page 4 on write in Alpha register
"804040-8120" where 804040 is the address of page 4 and 120 is the address of LIB#4.
But the '8' in 8120 what is? It is possible to have other value in place of this?
I searched in sy41cl, mem_ref, cl_memory and cl_extreme manuals.

My understanding is that the "8" digit in that string is required for compatibility reasons with other functions that use a similar format in ALPHA. So it needs to be there, and no other value is allowed.

An easier way to plug the Library#4 is to use the YFNX - the YFunctions Extreme. The PLUG function in that module will allow you to specify page #4 as destination.