Motorola MVME1X7P Programmer's Reference Manual page 189

NOELBBSY
DISMST
DISSRAM
REVEROM
MPIRQEN
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from the retry and the board does not lose its turn on the
VMEbus. For this reason, it is recommended that this bit
remain low.
When this bit is high, the early release feature of bus busy
feature on the VMEbus is disabled. The VMEchip2 drives
BBSY low whenever VMEbus AS is low. When this bit
is low, the early release feature of bus busy feature on the
VMEbus is not disabled.
When this bit is high, the
illuminates on assertion of Local Bus Reset or when the
VMEchip2 ASIC is driving Local Bus Busy. When this
bit is low, the LED on the MVME1x7P illuminates
VME
on assertion of Local Bus Reset, when the VMEchip2 is
driving Local Bus Busy, or when the VMEchip2 is driving
the VMEbus address strobe.
(The signal is also available at J2, the Remote Reset
connector behind the front panel. This connector allows
the Reset, Abort, and LED functions to be extended to the
exterior of the enclosure containing the board.)
When this bit is high, the SRAM decoder in the
VMEchip2 is disabled. When this bit is low, the SRAM
decoder in the VMEchip2 is enabled. Because the SRAM
decoder in the VMEchip2 is not used on the MVME1x7P,
this bit must be set.
This function is not used on the MVME1x7P. This bit
must not be set.
This function is not used on the MVME1x7P. This bit
must not be set.
LCSR Programming Model
LED on the MVME1x7P
VME
2
2-99