FIC A360 - Manual (Page 177)

Pin Assignments
Bit 7 of the Printer status register is the complement
Of the BUSY input. Refer to parallel port description
for use of this pin in ECP and EPP mode.
This active low outputs select motor Drives 1.
12 PE/WDATA#_T/_D12:I/O Another status output from the printer, a high
indicating that printer is out of paper.
Bit 5 of the printer status register reads the PE input.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
This active low high current driver provide the
encoded data to the disk drive.
Each falling edge cause a flux transfer on the media.
13 SLCT/WGATE#_T/_D12:I/O This high active output from the printer indicates that it
has power on.
Bit 4 of the printer status register read the SLCT input.
Refer to parallel port description for use of this pin in
ECP and EPP mode.
This active low high current driver allows current to
flow through the write head.
It become active just prior to writing to the diskette.
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
FIC A550 Service Manual
B-3