Boca Research 2x2 Manuel D’Utilisation

Introduction

• Two Startech SPP/ECP/EPP/parallel ports
• Bi-directional port capability
• 16-byte FIFO for ECP modes
• 8-bit DMA channel

A Note on Parallel Port Settings

Parallel port settings are defined as follows:

Output Only

Output Only.

. .

. . This setting defines the parallel port as a

standard uni-directional I/O only port for use with a printer.

SPP (standard)

. This setting defines the parallel port as a

standard bi-directional port for use with a printer.

EPP (enhanced parallel port)

. This setting defines the

parallel port as an 8-bit bi-directional port for use with hard
drives, tape backup systems, and other 8-bit bi-directional
devices.

ECP (extended capabilities port)

. This settings defines the

parallel port as a high-performance 8-bit bi-directional port
for use with hard drives, tape backup systems, high-
performance printers, and CD-ROM drives. This mode also
uses DMA to increase performance and reduce system
overhead.

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2/11/99, 11:02 AM