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