Advantech PCA-6774 Printer port connector CN4, CompactFlash Socket, Floppy drive connector CN3

2.11 Printer port connector (CN4)

Normally, the parallel port is used to connect the card to a printer. The PCA-6774 includes a multi-mode (ECP/EPP/SPP) parallel port accessed via CN4 and a 26-pin flat-cable connector. You will need an adapter cable if you use a traditional DB-25 connector. The adapter cable has a 26-pin connector on one end, and a DB-25 connector on the other.

The parallel port is designated as LPT1, and can be disabled or changed to LPT2 or LPT3 in the system BIOS setup.

The parallel port interrupt channel is designated to be IRQ7. You can select ECP/EPP DMA channel via BIOS setup.

2.12 CompactFlash Socket

The PCA-6774 provides a 50-pin socket for CompactFlash card type I/II.

2.12.1 CompactFlash (CN5)

The CompactFlash card shares a secondary IDE channel which can be enabled/disabled via the BIOS settings.

2.13 Floppy drive connector (CN3)

You can attach up to two floppy drives to the PCA-6774’s on-board con- troller. You can use any combination of 5.25” (360 KB and 1.2 MB) and/ or 3.5” (720 KB, 1.44 MB, and 2.88 MB) drives.

A20-pin daisy-chain drive connector cable is required for a dual-drive system. On one end of the cable is a 20-pin flat-cable connector. On the other end are two sets of floppy disk drive connectors. Each set consists of a 34-pin flat-cable connector (usually used for 3.5” drives) and a printed-circuit board connector (usually used for 5.25” drives).

2.13.1 Connecting the floppy drive

1.Plug the 20-pin flat-cable connector into CN3. Make sure that the red wire corresponds to pin one on the connector.

2.Attach the appropriate connector on the other end of the cable to the floppy drive(s). You can use only one connector in the set. The

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