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CY(4)			    BSD Programmer's Manual			 CY(4)

NAME
     cy - driver for Cyclades Cyclom-Y Multiport Serial Cards.

SYNOPSIS
     cy<n> at isa? irq <irq> iomem <address>
     cy<n> at pci?

     where:

     <irq> is the IRQ line to be used.
     <address> is the memory address to be used.

     For example, a Cyclom-8Yo installed with the factory defaults (0xd4000,
     IRQ10), would be configured as:

     cy0 at isa? irq 10 iomem 0xd4000

     A Cyclom-YeP or a Cyclom-8YoP (PCI) would need just the following line:

     cy0 at pci?

DESCRIPTION
     This driver supports the following Cyclom-Y boards:

     Cyclom-8Yo/ISA    (8 ports, octopus DB-25 cable)
     Cyclom-8YoP/PCI   (8 ports, octopus DB-25 cable)
     Cyclom-8Ys	       (8 ports, RJ-12 connectors)
     Cyclom-Ye/ISA     (8 to 32 ports, external Serial Modules)
     Cyclom-YeP/PCI    (8 to 32 ports, external Serial Modules)

     Cyclom-Y boards are based on the CD1400 serial processor. Each CD1400
     chip controls 4 channels and has a RISC processor inside.

     Speeds up to 115.2kbps are supported in all lines. Maximum sustained
     throughput without invoking flow control will depend on the interrupt la-
     tency in your system, but it is typically above 50 kbps/s per channel.

CONFIGURATION
     All Cyclom-Y boards for the ISA bus occupies 8kB of memory address and
     one IRQ line per board; Cyclom-Y/PCI boards occupies 16kB of memory ad-
     dress.  No I/O address space is required.

     For ISA boards, the memory address is selected by the dip-switches 1-6.
     The settings for the most common configurations are given below. The Cy-
     clom-Y can be configured to use any 8kB window below 1MB.

		SW1	SW2	SW3    SW4     SW5    SW6
     0xD0000   CLOSE   CLOSE   CLOSE   OPEN   CLOSE   OPEN
     0xD2000   OPEN    CLOSE   CLOSE   OPEN   CLOSE   OPEN
     0xD4000   CLOSE   OPEN    CLOSE   OPEN   CLOSE   OPEN
     0xD6000   OPEN    OPEN    CLOSE   OPEN   CLOSE   OPEN
     0xD8000   CLOSE   CLOSE   OPEN    OPEN   CLOSE   OPEN
     0xDA000   OPEN    CLOSE   OPEN    OPEN   CLOSE   OPEN
     0xDC000   CLOSE   OPEN    OPEN    OPEN   CLOSE   OPEN
     0xDE000   OPEN    OPEN    OPEN    OPEN   CLOSE   OPEN

     The IRQ is selected by the dip-switches 7-12. To configure the IRQ, set
     the dip-switch corresponding to the selected IRQ to "CLOSE" (IRQ's are
     indicated on the PCB silk screen). Possible IRQ's are 5, 9, 10, 11, 12,
     15.

     For PCI boards, no hardware configuration is required.

IOCTLS
     The Cyclom-Y drivers implement all the standard ioctls for serial drivers
     (see com(4)).

CABLING
     All Cyclom-Y boards provide RS-232C interface (DTE configuration).

     Use straight-through cables to connect modems and other DCE devices.  Use
     a null-modem cable to connect terminals, printers and other DTE devices.

     The pinouts for the DB-25 models follow the RS-232 standard.

     The pinouts for the Cyclom-8Ys (RJ-12) are : 1-DTR, 2-TxD, 3-Gnd, 4-CTS,
     5-RxD, 6-DCD (if you hold the board with the component side up and with
     the RJ-12 jacks facing you, the pin 1 is at your right). Notice that RTS
     is missing. If you want to keep your modems in the default configuration,
     connect RTS and DTR together in the modem side.

FILES
     /dev/ttyy[0-3][a-p]  files through which board is accessed

SEE ALSO
     MAKEDEV(8),  com(4),  tty(4)

AUTHORS
     Marcio Saito (marcio@cyclades.com), Ivan Passos (ivan@cyclades.com)

 BSD/OS				  19 Nov 1997				     2
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