256
Parallel (printer) interface
Printer connector
Keyboard/mouse interface
PS/2 connector
Pin number
Signal name
Meaning
I/O
1
_STROBE
Synchronizing output signal for loading PD0-to-PD7 data
O
2-9
RD0-PD7
Output signal for sending the 0th-to-7th bit data
O
10
_ACK
Request pulse generated from the printer immediately after its
BUSY status has been released
I
11
BUSY
DC-level signal indicating whether the printer is ready to
receive data
I
12
PE
DC-level signal denoting that the lack of printer paper has
been detected
I
13
SELECT
DC-level signal denoting the select/directory status of the
printer
I
14
_AUTFD
Input/output signal
O
15
_ERROR
DC-level signal indicating a printer error
I
16
_PRINT
Output signal for initializing the printer controller
O
17
_SLIN
Not used
I/O
18-25
GND
Signal ground
Pin number
Signal name
Description
I/O
1
DATA
Data
I/O
2
Unused
Not used
3
GND
Signal ground
4
+5V
+5V
5
CLOCK
Clock
I/O
6
Unused
Not used
13
1
14
25
6
4
2
1
3
5
Summary of Contents for 3200
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