Table of Contents
Advertisement
Operating Instructions
3
Software Initialization
Multi-MPU Programming Considerations
Local Reset Operation
3-8
8. Port commands to the 82596CA must be written as two 16-bit
writes: upper word first and lower word second.
9. The CD2401 appears repeatedly from $FFF45200 to $FFF45FFF
on the MVME177. If the local bus timer is enabled, the access times
out and terminates by a TEA signal.
Most functions that have been enabled with switches or jumpers on
other modules are enabled by setting control registers on the
MVME177. At power up or reset, the EPROMs that contain the
177Bug debugging package set up the default values of many of
these registers.
Specific programming details may be determined by study of the
M68060 Microprocessor User's Manual. You can also check the details
of all the MVME177 onboard registers as given in the Single Board
Computers Programmer's Reference Guide.
Good programming practice dictates that only one MPU at a time
has control of the MVME177 control registers.
Of particular note are:
Registers that modify the address map
Registers that require two cycles to access
VMEbus interrupt request registers
Local reset (LRST) is a subset of system reset (SRST). Local reset can
be generated five ways:
Expiration of the watchdog timer
Advertisement
Table of Contents
