Cable Installation
12 – DOS Based Quick Start
VL-486-4 Reference Manual
Cable Installation
To bring the header connectors on the VL-486-4 CPU card out to PC/AT and industry standard
pinouts, the VersaLogic cable assemblies listed below are required.
Table 2: Cable Assemblies.
Connector
Part #
Description
Connects to:
J1 COM1
9575
1 ft. 10-pin IDC to DB-9P
External equipment (e.g., modem)
or
9551
6 ft. 10-pin IDC to DB-25S
(Null Modem)
DTE device (e.g., host PC)
J2 Digital I/O
9582
3 ft. 34-pin IDC to 50-pin IDC
Opto 22 rack
J3 LPT1
9576
1 ft. 20-pin IDC to DB-25S
External printer
J4 COM2
9575
1 ft. 10-pin IDC to DB-9S
External equipment (e.g., modem)
J5 CT/DIO/INT
N/A
Miscellaneous user circuitry
J6 DMA
N/A
Miscellaneous user circuitry
L1 Speaker
N/A
External 8
Ω
speaker
CMOS RAM Setup
The VL-486-4 CPU card uses battery-backed, non-volatile CMOS RAM provided by the real
time clock chip to store system configuration settings. You can change these system settings with
the Setup program (accessed manually at system boot.) The configuration information is read by
the CPU upon system reset.
The Setup program is permanently stored in ROM, and can be run with or without an operating
system present. To run Setup, reset the CPU card and press the
DEL
key when prompted.
Select “
BASIC CMOS CONFIGURATION
” to display a summary of the information stored in
the CMOS RAM. To change the values shown you must enter new information. Use the cursor
keys to move the highlight bar to the desired entry field, the press the
–
or
+
keys to change the
values.
When you are finished, exit to the main Setup menu and select “
WRITE TO CMOS AND
EXIT
” to save the changes and exit the Setup program.
