Sharp mz-3500 Manual For Use page 151

Section A:
System
inte~face
A.7.1. Memo~y o~ganization afte~ loading function modules
For example, let us discuss a situation with th~ee modules loaded into
memo~y, one of them being inactive. The arrows show the path of system
calls through the modules:
c
c
[
EOS - system kernel (or bank manager)
LOADER
(Prog~am
loader)
active function module
inactive function module
The graphic shows that system calls are passed through all function
modules. Should two similar modules be loaded, both of them intercept-
ing the same system call, the one loaded first is not referred to until
the second has terminated its function. The file executor makes use of
this facility to allow for nested execution of command files.
EOS System manual
Daeumling & Zimmermann
Page 14