Specifications

Little Board/P5i Technical Manual
3–24
Table 3–8 Standard and PS/2 Mode Register Bit Definitions (Cont.)
Signal
Name Full Name Description
PE Paper end Reflects the status of the PE input. 1 indicates
paper end.
-ACK Acknowledge Reflects the status of the ACK input. 0
indicates a printer received a character..
-BUSY Busy Reflects the complement of the BUSY input. 0
indicates a printer is busy.
STROBE Strobe This bit is inverted and output to the -STROBE
pin.
AUTOFD Auto feed This bit is inverted and output to the -AUTOFD
pin.
-INIT Initiate output This bit is output to the -INIT pin.
SLC Printer select
input
This bit is inverted and output to the pin. It
selects a printer.
IRQE Interrupt request
enable
When set to 1, interrupts are enabled. An
interrupt is generated by the positive-going -
ACK input.
PCD Parallel control
direction
When set to 1, port is in input mode. In printer
mode, the printer is always in output mode
regardless of the state of this bit.
PD0-PD7 Parallel Data Bits
3.11.2 EPP and ECP Operation
The board’s parallel port is compliant with the IEEE-1284 Extended Capabilities Port Protocol and ISA
Standard (Rev 1.09, January 7, 1993), developed by Microsoft. Contact IEEE Customer Service and
request IEEE Std 1284 for information about EPP and ECP operation.
IEEE Customer Service
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PO Box 1331
Piscataway, NJ 08855-1331 USA
Phone: (800) 678-IEEE (in the US and Canada)
[phone] (outside the US and Canada)
FAX: [phone]
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