Location Monitor Lower Base Address Register; Semaphore Register 1 - Motorola MVME2600 Series Reference Manual

Location Monitor Lower Base Address Register

The Location Monitor Lower Base Address Register is an 8-bit register
located at ISA I/O address x1003. The Universe ASIC is programmed so
that this register can be accessed from the VMEbus to provide VMEbus
location monitor function.
REG Location Monitor Lower Base Address Register - Offset $1003
BIT SD7
FIELD VA7
OPER
RESET 0
VA[7:4]
LMEN

Semaphore Register 1

The Semaphore Register 1 is an 8-bit register located at ISA I/O address
x1004. The Universe ASIC is programmed so that this register can be
accessible from the VMEbus. This register can only be updated if bit 7 is
low or if the new value has the most significant bit cleared. When bit 7 is
high, this register will not latch in the new value if the new value has the
most significant bit set.
REG
BIT SD7
FIELD
OPER
RESET 0
SD6 SD5 SD4
VA6 VA5 VA4
R/W
0 0
Lower Base Address for the location monitor function.
This bit must be set to enable the location monitor
function.
Semaphore Register 1 - Offset $1004
SD6 SD5 SD4
0 0
ISA Local Resource Bus
SD3 SD2
LMEN
R
0 0 0
SD3 SD2
SEM1
R/W
0 0 0
1
SD1 SD0
R R
0 0
SD1 SD0
0 0
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