Vector 4 - Page 170

YECTOR 4
TECHNICAL INFORMATION
SECTION II - SET UP MEMORY FOR 128K OR 256K RAM
ummary: This section describes jumper connections used to employ
optional 256Kbyte RAM (doubling normal 128Kbyte memory capacity).
2.1 Configurations
The jumper options described here apply to all drive configurations of the
Vector 4 currently available (both floppy-only and hard- floppy systems).
Boards of both Revision § and Revision 1 are covered.
2.2 Location And Positi
To configure memory for 256Kbyte RAM, locate Jumper Area B on the Vector
4 SBC. Refer to Exhibit VI-12 (Vector 4 SBC Component Drawing) for
location information.
MEMORY SIZE CONNECT PADS: REV. { REV. 1
128Kbytes (standard- configuration) 1-3 1-2
256Kbytes (optional configuration) 2-3 2-3
Be sure to cut connections between pads not being used.
09-01-82
7200-0001
IV
2-1