28
Setting
SPP
(Standard Parallel Port)
ECP
(Extended Capabilities Port)
EPP
(Enhanced Parallel Port)
Function
Allows normal speed operation but in one
direction only.
Allows parallel port to operate in bidirectional
mode and at a speed higher than the maxi-
mum data transfer rate.
Allows bidirectional parallel port operation at
maximum speed.
I/O Address
3BC-3BE Hex
378-37A Hex (default)
278-27A Hex
The parallel connector on your system board can be set to any of the
following system I/O addresses:
Floppy Disk Drive Controller
The 586TXD system board is equipped with a shrouded floppy disk
header that supports two standard floppy disk drives. You can install
any 360KB, 720KB, 1.2MB, 1.44MB, or 2.88MB floppy disk drives. To
prevent improper floppy cable installation, the shrouded floppy disk
header has a keying mechanism. The 34-pin connector on the floppy
cable can be placed into the header only if pin 1 of the connector is
aligned with pin 1 of the header.
Connecting the Floppy Disk Cable
1. Install the 34-pin header con-
nector into the shrouded floppy
disk header (U28) on the sys-
tem board. The colored edge of
the ribbon should be aligned
with pin 1 of connector U28.
