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Installing Peripherals
8.3.1 STANDARD MODE
The Standard mode is an unidirectional parallel port. It is used for its compatibility with the
IBM PC standard.
8.3.2 EPP MODE
The EPP (Enhanced Parallel Port) mode consists of a hardware independent method of
accessing a parallel port configured as EPP. It provides support for single I/O cycle as well
as the high performance block I/O transfers. The EPP mode always uses the most optimum
method for I/O transfers. For example, if the hardware supports it, EPP mode will perform
32-bit I/O block transfers.
8.3.3 ECP MODE
While the EPP mode may intermix read and write operations without any overhead or
protocol handshaking, the ECP mode negotiates data transfers using a request from the host
and an acknowledgment from the peripheral.
8.4
PS/2 MOUSE
The board provides a PS/2 mouse header (J15) to output the mouse clock and data signals.
An adapter cable is required to make these signals available on a 6-pin PS/2 standard
connector: The cable must provide a 4-pin female header at one end, and a 6-pin female
PS/2 standard connector at the other end:
Connection
Pin #
D es ign atio n
1
1
M O UC LK
2
K B M O U G N D
3
M O UD ATA
4
K B MO U V C C
P in 1
17 .10 ''
Fe m ale
4-p in H ead er
8-7
1
to P in # 4
4
6
2
to P in # 1
2
3
to P in # 3
1
3
5
4
to P in # 5
(C o nn ec tor ba ck view )
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