FIC M295 User Manual

Page of 175
 
Pin Assignments
 
14 AFD#/DSB#_D14,_P14/_D12:O,O/O 
This output goes low to cause the printer to automatically 
feed one line after each line is printed. 
The AFD# output is the complement of bit 1 of the printer 
control register. 
Refer to parallel pot description for use of this pin in ECP 
and EPP mode. 
15  ERR#/HDSEL_T/D12:I/O 
A low on this input from the printer indicates that there is 
a error condition at the printer. 
Bit 3 of the printer status register reads the ERR# input.  
Refer to parallel port description for use of this pin in ECP 
and EPP mode. 
This high current output selects the floppy disk side for 
reading or writing.  
A logic “1” on this pin means side 0 will be accessed 
while a logic “0” means side 1 will be acessed. 
16 INIT#/DIR#_D14,_P14/D12:O,O/O 
This output is bit 2 of the printer control register. This is 
used to initiate the printer when low.  
Refer to parallel port description for use of this pin in ECP 
and EPP mode. 
This high current low active output determines the 
direction of the head movement. 
A logic “1” on this pin means outward motion, while a 
logic “0” means inward motion. 
17 SLIN#/STEP#_D14,_P14/_D12:O,O/O  This 
active low output selects the printer. 
This is the complement of bit 3 of the printer control 
register.  
Refer to parallel port description for use of this pin in ECP 
and EPP mode. 
This active low high current driver issues s low pulse for 
each track to track movement of the head. 
18 GND: 
Ground 
19 GND: 
Ground 
20 GND: 
Ground 
21 GND: 
Ground 
22 GND: 
Ground 
23 GND: 
Ground 
24 GND: 
Ground 
25 GND: 
Ground 
 
B.4  PS/2 Mouse / Ext. Keyboard Mini-DIN Connector 
Following is the pin assignment of the PS/2 connector: 
 
No Signal 
Description 
Type 
1 MOUSE_CLK 
External 
clock for mouse or keyboard 
I/O 
EKB_CLK 
External clock for mouse or keyboard 
I/O 
+5vs 
5v power supply 
4 Gnd 
Ground 
EKB_DATA 
External data for mouse or keyboard 
I/O 
MOUSE_DATA 
External data for mouse or keyboard 
I/O 
 
 
FIC M295 / M296 Service Manual 
B-3