Motorola MVME2300 Series - Manual (Page 62)

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Board Description and Memory Maps
1
These registers are described in the following subsections.
LM/SIG Control Register
The LM/SIG Control register is an 8-bit register located at ISA I/O address
x1000. This register provides a method to generate software interrupts.
The Universe ASIC is programmed so that this register can be accessed
from the VMEbus to generate software interrupts to the processor(s).
SET_SIG1
Writing a 1 to this bit will set the SIG1 status bit.
SET_SIG0
Writing a 1 to this bit will set the SIG0 status bit.
Table 1-19. VME Registers
PCI I/O Address Function
0000 1000 SIG/LM Control Register
0000 1001 SIG/LM Status Register
0000 1002 VMEbus Location Monitor Upper Base Address
0000 1003 VMEbus Location Monitor Lower Base Address
0000 1004 VMEbus Semaphore Register 1
0000 1005 VMEbus Semaphore Register 2
0000 1006 VMEbus Geographical Address Status
REG LM/SIG Control Register - Offset $1000
BIT SD7 SD6 SD5 SD4 SD3 SD2 SD1 SD0
FIELD
SET
SIG1
SET
SIG0
SET
LM1
SET
LM0
CLR
SIG1
CLR
SIG0
CLR
LM1 CLR
LM0
OPER WRITE-ONLY
RESET 0 0 0 0 0 0 0 0