ADLINK Technology ReadyBoard 620, Reference Manual

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Chapter 3 Hardware
18 Reference Manual ReadyBoard 620
Floppy/Parallel Interface
The Super I/O controller (W83627HF) provides the floppy controller and the parallel port controller. The
floppy controller and the parallel port controller share the same output connector (J18) on the board and the
device selection is made in the BIOS Setup Utility.
•
Floppy port controller only supports one floppy drive, in the standard formats, such as 360 kB, 720 kB,
1.2 MB, 1.44 MB, or 2.88 MB drives.
•
Parallel port controller supports standard parallel, bi-directional, ECP and EPP protocols.
Table 3-4 describes the floppy/parallel port pin/signals with 26-pins, 2 rows, consecutive (1, 14) with 2 mm
pin spacing.
3F8-3FF Serial Port 1 (COM1)
778-77A Parallel Port (ECP Extensions) (Port 378+400)
CF8-CFF PCI Bus Configuration Address and Data
NOTE Due to the multiplexed nature of the signals for the floppy and parallel
ports, you can only connect one of these devices at a time. Refer to Chapter
4, BIOS Setup Utility later in this manual to enter the BIOS Setup for
selecting the floppy or parallel device. A reboot is necessary for the change
of BIOS settings to take affect.
Table 3-4. Floppy/Parallel Interface Pin/Signal Descriptions (J18)
Pin # Signal Description
1 Strobe* Parallel Strobe* – This is an output signal used to strobe data into the printer. I/
O pin in ECP/EPP mode.
2 PD0
INDEX*
Parallel Port Data 0 – These pins (0 to 7) provide parallel port data signals.
Floppy Index – Detects head positioned over the beginning of a track.
3 PD1
TRK0*
Parallel Port Data 1 – See pin 2 (PD0) for more information.
Floppy Track 0 – Detects when head is positioned over track 0.
4 PD2
WPRT*
Parallel Port Data 2 – See pin 2 (PD0) for more information.
Floppy Write Protect – Senses if diskette is write protected.
5 PD3
RDATA*
Parallel Port Data 3 – See pin 2 (PD0) for more information.
Floppy Read Data – Raw serial bit stream from the drive for read operations.
6 PD4
DSKCHG*
Parallel Port Data 4 – See pin 2 (PD0) for more information.
Floppy Disk Change – Senses when drive door is open or the diskette has been
changed since the last drive selection.
7 PD5 Parallel Port Data 5 – See pin 2 (PD0) for more information.
8 PD6 Parallel Port Data 6 – See pin 2 (PD0) for more information.
9 PD7 Parallel Port Data 7 – See pin 2 (PD0) for more information.
10 ACK*
DS1*
Parallel Acknowledge * – This is a status output signal from the printer. A Low
State indicates it has received the data and is ready to accept new data.
Floppy Drive Select 1 – Select drive 1.
Table 3-3. I/O Address Map (Continued)