Delta Data Systems PMAC PCI - Base Board Connector Pinouts; J1: Display Port Connector; J1 JDISP (14-Pin Connector)

PMAC-PC Hardware Reference
PMAC-PCI Base Board Connector Pinouts 43
BASE BOARD CONNECTOR PINOUTS
J1: Display Port Connector
J1 JDISP (14-Pin Connector)
Front View
Pin #
Symbol
Function
Description
Notes
1
Vdd
Output
+5V Power
Power supply out
2
Vss
Common
PMAC Common
3
Rs
Output
Read Strobe
TTL signal out
4
Vee
Output
Contrast Adjust VEE
0 TO +5 VDC *
5
E
Output
Display Enable
High is enable
6
R/W
Output
Read or Write
TTL signal out
7
DB1
Output
Display Data 1
8
DB0
Output
Display Data 0
9
DB3
Output
Display Data 3
10
DB2
Output
Display Data 2
11
DB5
Output
Display Data 5
12
DB4
Output
Display Data 4
13
DB7
Output
Display Data 7
14
DB6
Output
Display Data 6
* Controlled by potentiometer R1
The JDISP connector is used to drive the 2-line x 24-character (Acc-12), 2 x 40 (Acc-12A) LCD, or the 2
x 40 vacuum fluorescent (Acc 12C) display unit. The DISPLAY command may be used to send messages
and values to the display.
See Also:
Program Commands: Display
Accessories; Acc-12, 12A, 12C, Acc-16D
Memory Map: Y:$0780 - $07D1