2-6
Computer Group Literature Center Web Site
Startup and Operation
2
4. You may configure Port B of the Z85230 serial communications
controller with a serial interface module (SIM), which you install at
connector J15 on the MVME162P4 board. Five serial interface
modules are available:
– EIA-232-D DTE (SIMM05)
– EIA-232-D DCE (SIMM06)
– EIA-530 DTE (SIMM07)
– EIA-530 DCE (SIMM08)
– EIA-485, or EIA-422 DTE or DCE (all with SIMM09)
For information on removing and/or installing a SIM, refer to
Chapter 1.
Table 2-2. Software-Readable Switches
Bit No.
S4 Segment
Function
GPI0
8
When set to 1 (high), instructs the debugger to use local static RAM for
its work page (variables, stack, vector tables, etc.).
GPI1
7
When set to 1 (high), instructs the debugger to use the default
setup/operation parameters in ROM instead of the user setup/operation
parameters in NVRAM. The effect is the same as pressing the
RESET
and
ABORT
switches simultaneously.
This feature can be helpful in the event the user setup is corrupted or
does not meet a sanity check. Refer to the ENV command description
for the Flash/ROM defaults.
GPI2
6
Reserved for future use.
GPI3
5
When set to 0 (low), informs the debugger that it is executing out of
Flash memory. When set to 1 (high), it informs the debugger that it is
executing out of the PROM.
GPI4
4
Open to your application.
GPI5
3
Open to your application.
GPI6
2
Open to your application.
GPI7
1
Open to your application.
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