General-Purpose Readable Switch (S4 Pin 5) - Motorola MVME162P-344 Series Installation And Use Manual

General-Purpose Readable Switch (S4 Pin 5)

Switch S4 is similar in function to the general-purpose readable jumper
headers found on earlier MVME162/172 series boards. S4 provides eight
software-readable switch segments. These switches can be read as bits in
a register (at address $FFF4202C) in the MC2 General-Purpose Inputs
register in the Petra ASIC (refer to the Programmer's Reference Guide for
details). Bit GPI7 is associated with switch segment 1; bit GPI0 is
associated with switch segment 8. The bit values are read as a 0 when the
switch is on, and as a 1 when the switch is off. The MVME162P4 is
shipped from the factory with S4 set to all 0s (all switches set to
diagrammed below.
If the MVME162Bug firmware is installed, four bits are user-definable
(i.e., switch segments 1-4). If the MVME162Bug firmware is not installed,
seven bits are user-definable (i.e., segments 1-4 and segments 6-8).
Note
.
S4
OFF
GPI7
GPI6
GPI5
GPI4
GPI3
GPI2
GPI1
GPI0
Flash Selected
(factory configuration)
http://www.motorola.com/computer/literature
Switch segment 5 (GPI3) is reserved to select either the Flash
memory map (switch set to
(switch set to ). GPI3 is not user-definable.
OFF
162 BUG Installed (default)
ON
USER-DEFINABLE
1
USER-DEFINABLE
USER-DEFINABLE
USER-DEFINABLE
ON=FLASH; OFF=EPROM
5
REFER TO DEBUG MANUAL
REFER TO DEBUG MANUAL
8 REFER TO DEBUG MANUAL
Preparing the Board
) or the EPROM memory map
ON
User Code Installed
USER-DEFINABLE
USER-DEFINABLE
USER-DEFINABLE
USER-DEFINABLE
ON=FLASH; OFF=EPROM
REFER TO DEBUG MANUAL
REFER TO DEBUG MANUAL
REFER TO DEBUG MANUAL
2735 0004
1
), as
ON
1-17