Lm/Sig Control Register; Table 1-19. Vme Registers - Motorola MVME2600 Series Reference Manual

Board Description and Memory Maps
1
PCI I/O Address
0000 1000
0000 1001
0000 1002
0000 1003
0000 1004
0000 1005
0000 1006

LM/SIG Control Register

REG
BIT SD7
FIELD SET
SIG1
OPER
RESET 0
1-40

Table 1-19. VME Registers

SIG/LM Control Register
SIG/LM Status Register
VMEbus Location Monitor Upper Base Address
VMEbus Location Monitor Lower Base Address
VMEbus Semaphore Register 1
VMEbus Semaphore Register 2
VMEbus Geographical Address Status
These registers are described in the following sub-sections.
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).
LM/SIG Control Register - Offset $1000
SD6 SD5
SET SET
SIG0 LM1
0 0
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.
Function
SD4 SD3 SD2
SET CLR CLR
LM0 SIG1 SIG0
WRITE-ONLY
0 0
SD1 SD0
CLR CLR
LM1 LM0
0 0 0