Epson Equity III+ Produkthandbuch - Seite 6
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EQUITY Ill+ (10 MHz)
Connector Pin Assignments
Parallel Port Connector
1 3
2 5
PIN NO.
SIGNAL NAME
1
2
DATA6
3
DATA1
4
DATA2
5
DATA3
6
DATA4
7
DATA5
6
DATA6
9
DATA7
10
11
+ BUSY
12
+PE
13
+ SLCT
14
15
-ERROR
16
16
GND
19
GND
GND
21
GND
GND
22
23
GND
24
GND
25
GND
Serial Port Connector
1
2
3
4
5
6
7
8
9
PIN NO.
SIGNAL NAME
1
CRDET
2
RXDT
3
TXDT
4
DTR
5
SG
6
DSR
7
RTS
a
CTS
9
RI
Keyboard Connector
Pin Number
EQIII + - 6
DIRECTION
0
0
Printer Data Bit 0
0
Printer Data Bii 1
0
Printer Data Bit 2
0
Printer Data Bii 3
0
Printer Data Btt 4
0
Printer Data
Data Bk 6
0
Printer
Data Bit 7
0
Printer
I
Acknowledge
Printer Busy
I
I
End of Paper
I
Printer Select
Auto Feed
Printer Error
Printer lnltiallze
I
Printer Select In
Ground
Ground
Ground
Ground
Ground
Ground
Ground
Ground
I
Data Carrier Detect
I
Receive Data
0
Transmit Data
0
Data Terminal Ready
Signal Ground
Data Set
Ready
Request to Send
I
Clear to Send
I
Ring Indicator
Signal Name
1
Clock
2
Data
3
Not Connected
4
Ground
5
Ground
12/12/88
CN6
Main Circuit Board
I
I
Jumper
I
1
2
3
4
5
6
* Set CPU clock (6/8/10 MHz)
Prohibited
Prohibited
Use CPU clock for NPX clock
Use 8 MHz clock for NPX clock
l
Prohibited
* 2 wait cycles for EPROM (note 1)
A
1 wait cycle for EPROM (note 1)
B
* 4 wait cycles (note 2)
A
A
3 wait cycles (note 2)
B A
2 wait cycles (note 2)
A
B
1 wait cycle (note 2)
B
B
* Factory Settings
Notes:
Selectable wait states only available at 10 MHz.
1.
2.
W ait cycles for external 16-bit devices. These
selectable wait cycles are available at 10 MHz only.
Equity Series Computers
1