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Serial Solutions Range Product

Manual

/S buffer Set size of all buffers in bytes, buffer is rounded to the nearest power of 2 and must be a

decimal number in the range 32 to 32768. For any serial port opened two buffers of size buffer are

allocated, one for input and the other for output.

/H hardware handshake selects which hardware handshake type to use on the specified ports. This

is used in the following manner: /H range, hs where range specifies the COM port or ports and hs

selects handshake type.

Handshake types available are:

Type 0 RS232 DTR/CTS – The PC only transmits when CTS is input true. When the PC is able to

receive its sets DTR output true. The DSR and DCD inputs are ignored. The RTS output

line is set true in case the external serial device needs a true signal.

Type 4 3 Wire Handshake – Really no handshake at all since the PC transmits irrespective of the

handshake lines. The 3 wires are TxD, RxD and Ground, no other lines are required. Thus

the CTS, DSR and DCD inputs are ignored. The RTS and DTR output line is set true just in

case the external serial device needs a true signal.

Configuring and Installing NEWCOM.SYS

To load the Serial Solutions for DOS device driver an entry needs to be added to the CONFIG.SYS file. Any

simple test editor, EDIT for example, can edit the CONFIG.SYS file. The installation procedure given below

is for a PCI Lynx 8 port RS232 as COM5-COM12

The parameter required by the NEWCOM.SYS follows:

Port Address

/A5-8, 0140

COM ports 5, 6, 7 and 8 are defined with an I/O address range that begins at 0140h and all subsequent

ports have an I/O address that is 8 higher than the previous i.e. if COM5 has an address of 0140h, then

COM6 will have an address of 0148h, COM7 an address of 0150h etc.

PCI Lynx 8 port RS232 Users: /A5-12,0140

SISR, IRC, Range.

/L 0104,11,5-8

0104h is the i/o address SISR, 11 is the IRQ and since the COM port range is COM5 – COM 8 range is

entered as 5-8

PCI Lynx 8 port RS232 Users: /L 0104,11,5-12

Number Buffer.

/B8

8 buffers are defined, though only four ports are in use – this is because buffers in DOS are

assigned in a sequential order from COM1. Since the PCI Quad RS232 has been assigned COM port

values of 5 to 8, all preceding COM ports, must have buffers assigned to them also.

PCI Lynx 8 port RS232 Users: /B12

Buffer Size

/S512

Buffer size set to 512 bytes.

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Brainboxes UC-464 Manual Página 8