Specifications

PC/II+p Board Technical Reference Manual 53
MT002615 ©1999-2001, Megatel Computer Corporation
7.17.1 Parallel Port Pinout
Table 22 Signals – J904 – Parallel LPT1 Interface
PIN NAME PIN# SIGNAL NAME SIGNAL DESCRIPTION
P1-AFD#
b9 Autofeed Output This active low output causes the printer to
automatically feed one line after each line is printed.
This signal is the complement of bit 1 of the Printer
Control Register.
P1-AKN#
e12 Acknowledge This active low output from the printer indicates it has
received the data and is ready to accept new data.
Bit 6 of the Printer Status Register reads the PACK#
input.
P1-BUSY
d12 Busy Status of the printer; high indicates the printer is busy
and not ready to receive new data. Bit 7 of the Printer
Status Register is the complement of the BUSY
input.
P1-D0
a9 Port Data – Bit0 Bi-directional parallel data bit 0 between host/printer.
P1-D1
d10 Port Data – Bit1 Bi-directional parallel data bit 1 between host/printer.
P1-D2
b10 Port Data – Bit2 Bi-directional parallel data bit 2 between host/printer.
P1-D3
e11 Port Data – Bit3 Bi-directional parallel data bit 3 between host/printer.
P1-D4
d11 Port Data – Bit4 Bi-directional parallel data bit 4 between host/printer.
P1-D5
c11 Port Data – Bit5 Bi-directional parallel data bit 5 between host/printer.
P1-D6
b11 Port Data – Bit6 Bi-directional parallel data bit 6 between host/printer.
P1-D7
a11 Port Data – Bit7 Bi-directional parallel data bit 7 between host/printer.
P1-ERR#
e10 Error This active low signal indicates an error condition at
the printer.
P1-INIT#
c10 Initiate Output This active low signal is bit 2 of the printer control
register. This is used to initiate the printer when low.
P1-PE
c12 Paper End Printer is out of paper status. Bit 5 of the Printer
Status Register reads the PE input.
P1-SLCT
b12 Printer Selected
Status
Active high output from the printer indicates that it
has power on. Bit 4 of the Printer Status Register
reads the SLCT input.
P1-SLIN#
a10 Printer select
input
Active low signal selects the printer. This is the
complement of bit 3 of the Printer Control Register.
P1-STB#
c9 Strobe Output Active low pulse strobes data into the printer. This
output signal is the complement of bit 0 of the Printer
Control Register.