Product information guide

EQUITY Ill+ (12 MHz)
Connector Pin Assignments
Parallel Port Connector
13
00000000000
25
00000000000
PIN NO.
SIGNAL NAME
DIRECTION
1 - STROBE
0
2 DATA0
0
3 DATA1
0
4 DATA2
0
5 DATA3
0
6 DATA4
0
7 DATA5
0
0 DATA6
0
9 DATA7
0
10 - ACK
I
11
+ BUSY
I
12 +PE
I
13
+ SLCT
I
14
- AIJTOFT
I
15 - ERROR
I
16 - INIT
I
17 - SLCTIN
I
16 GND
19 GND
20 GND
21 GND
22 GND
23 GND
24 GND
25 GND
DESCRlPTKlN
Printer Data Bit 0
Printer Data Bit 1
Printer Data Bit 2
Printer Data Bit 3
Printer Data Bit 4
Printer Data Bit 5
Printer Data Bit 6
Printer Data Bit 7
Acknowledge
Printer Busy
End of Paper
Printer Select
Auto Feed
Printer Error
Printer Inltiallze
Prlnter Select In
Ground
Ground
Ground
Ground
Grwnd
Ground
Ground
Ground
Serial Port Connector
12345
(od)
[o o o oJ
6 7 8 9
PIN NO.
SIGNAL NAME
DIRECTION
DESCRIPTION
CRDET
RXDT
TXDT
DTR
SG
DSR
RTS
CTS
Data Carrier Detect
Receive Data
Transmit Data
Data Terminal Ready
Signal Ground
Data Set Ready
Request to Send
Clear to Send
9
RI
I Ring Indicator
Keyboard Connector
I
I
EQlll + - 2
12/l 2188
Equity Series Computers
Pin Number
Signal Name
I
1 Clock
2 Data
3
Not Connected
4 Ground
5
+5 VDC
-
Ground
Main Circuit Board
Jumper
Function
123456
A
B
Prohibited
* Set CPU clock (6/8/12 MHz)
L
A A
Prohibited
B A
Use CPU clock for NPX clock
A B
* Use 8 MHz clock for NPX clock
B B
Prohibited
A
* 2 wait cycles for EPROM (note 1)
B
1 wait cycle for EPROM (note 1)
A A *
4 wait cycles (note 2)
B A
3 wait cycles (note 2)
A B
2 wait cycles (note 2)
B B
1 wait cycle (note 2)
* Factory Settings
Notes:
1.
Selectable wait states only available at 12 MHz.
2.
Wait cycles for external 16-bit devices. These
selectable wait cycles are available at 12 MHz only.