Universe Configuration Registers
6-7
6.2.1 Initialization Values
Some of the Universe registers have recommended initialization values, as
described in the table below. Please see the
Universe User’s Manual
for more infor-
mation on the available power-up options.
Table 6-2. Recommended Initialization Values for Universe
Configure
Register
Hex Default
Notes
PCI space, control, and
status
PCI_BS
0080,0001
PCI base address, mapped to
I/O space
PCI_CSR
0000,0045
Parity error response, bus mas-
ter, and target I/O enabled
SYSFAIL* assertion
VCSR_CLR
4000,0000
De-assert SYSFAIL on VMEbus
(typically written at power-up/
init.)
VMEbus transaction
characteristics
MAST_CTL
00D0,0000
Set maximum number of
retries, posted write transfer
count, request level and mode,
release mode, and burst size
VMEbus timeout and
other misc. params.
MISC_CTL
3000,0000
Set VMEbus timeout to 64µs
Timer values
LMISC
Do not alter
Additional PCI timing params.
VME Master Image 0
(PCI Slave Image 0)
LSI0_BS
C000,0000
VME master base address
LSI0_BD
F800,0000
VME master window size
LSI0_TO
0000,0000
VME master translation offset.
(Default to zero—can be any
address on 4K boundary)
LSI0_CTL
8082,1000
Enable image and set A32
address space, max. 32-bit
data width for VMEbus
VME Slave Image 0
VSI0_BS
C000,0000
VME slave base address
VSI0_BD
C800,000
VME slave window size
VSI0_TO
4000,0000
VME slave translation offset
VSI0_CTL
8062,0000
Enable image, set A32 address
space, data AM code, and
supervisor
VMEbus Register Access
Image Control
VRAI_BS
0000,1000
Mailbox base address
VRAI_CTL
8060,0000
Enable and set for data AM
code and supervisor
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