Appendix A
Specifications
© National Instruments Corporation
A- 3
VXIpc-850 Series User Manual
VMEbus Capability Codes
Capability Code
Description
A32, A24, A16 (master)
VMEbus master A32, A24, and A16 addressing
A32, A24, A16 (slave)
VMEbus slave A32, A24, and A16 addressing
D64, D32, D16, D08(EO)
(master)
VMEbus master D64, D32, D16, and D08 data sizes
D64, D32, D16, D08(EO)
(slave)
VMEbus slave D64, D32, D16, and D08 data sizes
BLT, MBLT (master)
VMEbus master block and D64 transfers
BLT, MBLT (slave)
VMEbus slave block and D64 transfers
RMW (master)
VMEbus master read/modify/write transfers
RMW (slave)
VMEbus slave read/modify/write transfers
RETRY (master)
VMEbus master retry support
RETRY (slave)
VMEbus slave retry support
FSD
First slot detector
SCON
VMEbus System Controller (Automatic Detection)
PRI, RRS
Prioritized or Round Robin Select arbiter
ROR, FAIR
Release on Request and FAIR bus requester
IH(7–1)
Interrupt handler for levels 7–1
I(7–1)
Interrupt requester for levels 7–1
D32, D16, D08(O)
(Interrupt Handler)
VMEbus D32, D16, D08(O) interrupt handler
D32, D16, D08(O)
(Interrupter)
VMEbus D32, D16, D08(O) interrupter
ROAK, RORA
Release on Acknowledge or Register Access interrupter
BTO(
x
)
VMEbus bus timer (programmable limit)
LOCK
Can lock the VMEbus for indivisible transfers
Adding RAM
To add RAM to the VXIpc-850, remove the top cover and add SIMM
modules to the two empty SIMM sockets. The maximum amount of
RAM that can be added to a standard configuration of 16 MB is
64 MB, yielding a total of 80 MB. By replacing the 16 MB SIMMs,
you can have a total of 128 MB.