Vector Graphic Vector 4 - Page 171

VECTOR " USER'S MANUAL
VECTOR " SPECIFICATIONS
SYSTEM SPECIFICATIONS
The Z80B and 8088-2 CPUs can be individually selected through the use of
Port OCH and Port ODH.
Z80B
8088-2
MgORy
Data Lines
Address Lines
Instructions
Cloc~ Speed
Power Supply
Data Lines
Ad9ress Lines
Instructions
Clock Speed
Power Supply
8
16
158 (including 8080 instructions)
5.1
MHz
+5 V
8
20
235
5.1 MHz
+5 V
PROM - One 4 K 2732 (or an 8 K 2764) and two 2 K 2716s. The 2732 is
used for the Executive system program and the 2716s house the Character
Generators. .
2732 Addressed from OOOOH to OFFFH. This 4 K block is
enabled/disabled through use of Port 02H or 03H. PROM is enabled
(RAM disabled) when bit "0" is 0 and is disabled (RAM enabled)
when
bit "0" is 1.
2716 Used as Character Generators for the standard alphanumeric mode.
RAM - Sixteen 4164s (128 K system), four 74LS189s and one 74LS670.
An additional RAM memory board (using sixteen more 41648) can be added to
increase main memory from 128 K to 256 K.
Serial Ports - Three 8251 USART Chips are used to interface with the
keyboard, serial printer and modem.·
Keyboard
Serial Printer
Rev. A - 9-1-82
OlH (Status/Control)
OOH (Data)
06H (Data)
07H (Status/Control)
7100-0001
X A-I