HP 49G / HP 50G memory

[DavidM]

(11-15-2017 06:54 PM)groskwik Wrote:  For my HP 50G and even my HP 49G that I still use I always have this question about memory storage. I know that flash memory is safer as it won't be lost in case of memory lost. Is there any advantage of port 0 or port 1 over port 2 ?

Thanks

Programs and objects stored in port 0 are accessed and executed directly, while objects in ports 1 and 2 require the calculator O/S to perform bank switching (and possibly copying of the objects to temporary memory as well). Generally speaking, this means that executing code from port 0 will perform better than the same code stored in port 1 or 2.

The delay of a single port 1/2 object being accessed is negligible, but if you are executing a program repeatedly, say in a loop, the accumulated effect is noticeable.