On Mon, 5 Sep 2022, Tom Stepleton wrote:
Or at least there as something that was sold in this way. Here is its
brochure:

http://www.bitsavers.org/pdf/sykes/brochures/Sykes_Comm-Stor_5100_Brochure.pdf

Interesting!

(What is an IMF?)

IMF = internal machine fix
The 5100/5110 had a mechanism to load resident binary routines into memory in order to patch ROS (=ROM) routines or to add a driver (e.g. the Plot feature). Basically, you load a program that then relocates the resident part to the end of free memory, patches some entry points in RWS (=RAM) and adjusts the end-of-memory value.

Christian

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