Introduction
2
– Overview
VL-586-1 Reference Manual
STD/STD32 B
US
C
OMPATIBILITY
The VL-586-1 CPU card complies with certain subsets of the STD 32 Bus specification that
allow it to communicate with STD 80 compatible 8-bit and STD 32 compatible 16-bit I/O and
memory cards. In addition, the card fully complies with the STD 80 Bus specification using a
bus speed of 8.33 MHz. The CPU card is compatible with all I/O and memory cards that adhere
to STD 80 specifications.
PC/104-
P
LUS
C
OMPATIBILITY
The VL-586-1’s PC/104-
Plus
expansion site allows PC/104 and PC/104-
Plus
modules to be
stacked directly on the board. This permits the use of high speed video modules and "local" I/O
expansion in systems using multiple processor cards. Use of on-board modules requires an
empty card slot space next to the VL-586-1 board. Both standard PC/104 and PC/104-
Plus
(PCI
32-bit, 33 MHz) based modules are supported.
O
N
-B
OARD
M
EMORY
DRAM
The on-board DRAM socket (U11) accepts one standard 72-pin SO DIMM module. A
variety of sizes may be used (16M, 32M or 64M.) Fast Page Mode and EDO type modules are
supported, provided they are 70ns or faster. Both 5V or 3.3V modules can be used (jumper
selectable.)
BBSRAM
The (-p) version of the VL-586-1 includes 512K of on-board Battery-Backed Static
RAM for non-volatile storage of information. This RAM is accessible through a 64K page frame
at E0000h in the main memory map.
CMOS RAM
Standard setup values are stored in a small battery-backed CMOS RAM chip.
FLASH
The VL-586-1 on-board ROM socket (U3) accepts 128Kx8 or 512Kx8, 32 pin plastic
PLCC
or 32 pin J-lead ceramic part(s). A Flash Disk System and Embedded DOS are included
which allow the card to boot to the A: prompt without user configuration.
H
ARD
D
ISK AND
F
LOPPY
D
ISK
I
NTERFACE
A 40-pin IDE hard disk drive interface supports modes 1 through 4 via a PCI based controller. A
34-pin floppy disk drive interface is also included on the VL-586-1 card for connection to
industry standard 3½" floppy drives. Each interface supports two drives, and will work with
externally mounted or in-rack devices.
S
ERIAL
P
ORTS
The two on-board serial ports are hardware and software compatible with 16550 type UARTs
with 16 byte FIFOs. Baud rates are programmable from 50 baud to 115K baud. COM1 is a
standard RS-232 interface, COM2 can be jumpered for RS-232, RS-422, or RS-485 operation.
Summary of Contents for VL-586-1
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