VersaLogic VL-586-1, Reference Manual

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Card Insertion and Extraction
40 – Installation VL-586-1 Reference Manual
Card Insertion and Extraction
Cards should be inserted or removed from the STD Bus card cage only when the system power is
off. If you meet resistance when extracting a card, make sure the retainer bar on the card cage is
out of the way.
C
ARD
I
NSTALLATION
The VL-586-1 card can be used alone, as a single board computer; as the only computer in a card
cage with other I/O cards; or in conjunction with several other CPUs in a multiprocessing
arrangement.
Cards must be oriented correctly in the card cage (usually with the card ejector toward the top of
the card cage). Refer to the card cage documentation for the correct way to insert STD/STD 32
Bus cards.
Caution
Cards inserted upside down can cause severe damage to the circuit card, the
motherboard, and possibly the power supply.
C
ARD
P
LACEMENT
The CPU can be inserted into any available slot in an STD/STD 32 Bus card cage. When using
an STD 32 card cage, the left most slot position is designated as Slot X and is not bussed in
parallel with the other slots. Do not insert the CPU or any I/O card into this slot; it is reserved for
a bus arbiter or a power supply card.
STD 80 B
US
I
NSTALLATION
G
UIDELINES
An 8-bit STD 80 card cage (like VersaLogic's VX-Series) can be used if cost savings are a prime
consideration over performance, however, the use of 8-bit cages greater than six slots is not
recommended due to the high performance bus drivers used on the VL-586-1. An 8-bit STD Bus
card cage may be a good choice in small embedded control systems, especially if all I/O cards
are 8-bit STD 80 Bus cards, or if the system is a single-board (CPU only) design.
Multiprocessing is not supported in 8-bit cages. Dynamic bus sizing signals on the CPU card
automatically determine the restricted data bus width, and will divide 16-bit memory and I/O
transactions into two separate 8-bit cycles. No jumper configuration is needed on the CPU card,
however, some 16-bit I/O cards might need to be specially jumpered to operate with an 8-bit data
bus.
STD 32 B
US
I
NSTALLATION
G
UIDELINES
The VL-586-1 card complies with all STD 32 specifications. If the CPU is used with other STD
32 compatible I/O cards, the highest performance will be realized by plugging all the cards into
an STD 32 card cage.
A variety of STD 80 (8-bit) and STD 32 (8 or 16-bit) cards can be mixed in an STD 32 card
cage. Dynamic bus sizing signals automatically determine the data bus width.