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INTRODUCTION
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| The PCCOM V2.0 & V5.1 is
a high performance, easy to use RS232/RS422 device driver for PC/XT, PC/AT,
PC/386, PC/486 or compatibles. Under MS/DOS environment, you can set up
your serial ports by PCCOM device driver, and these serial ports can be
treated as COM1: and COM2: devices. The setup procedure provides flexible
functions to specify the configuration of multi-serial card, that is,
the hardware configurations of I/O port number, I/O port address, interrupt
and interrupt vector are user selectable.
After the device driver is installed, It takes over communication between CPU and multi-serial cards such as four port card, eight port card, ... etc. For each I/O port, the service routine handles a ring buffer to keep track of all I/O data. Moreover, the PCCOM provides library routines (C, PASCAL, BASIC, FoxPro) and DOS communication interface (DOS device driver, BIOS call) for several access levels. The PCCOM V2.0 is an upgrade version of PCCOM V1.0 software it combines
with PCCOM V1.0 and SERIAL DRIVER utilities. While PCCOM V5.1 is on
upgrade version of PCCOM V2.0 software, that supports both ISA &
PCI series cards. Therefore, PCCOM V2.0 & V5.1 device driver supports
up to 64 ports and each serial port may be either 8250, 16450, or 16550
(FIFO) chip.
The features of PCCOM are: *Support RS232/RS422 device driver under MS/DOS. *I/O port number, I/O port address, interrupt, interrupt vector, and ring buffer size selectable. *Communication parameters (baud rate, parity, ... etc. ) selectable. *Device name is specified by the user and it can be treated as a file to perform I/O operations. *The device driver start up by directives of CONFIG.SYS file. *Up to 64 ports can be driven and each serial port may be either 8250, 16450, or 16550 (FIFO) chip which are detected by PCCOM automatically. *Support C, PASCAL, and BASIC, FoxPro language library routines to link user's program. *Support RS232/RS422 diagnostic programs, file transfer, and virtual terminal evaluator software. *Virtual terminal evaluator provides graphics capability.
Comparisons between PCCOM V2.0 and PCCOM V1.0 plus SERIAL DRIVER: *Upgrade version of PCCOM V1.0 and combines with PCCOM V1.0 plus SERIAL DRIVER. *New installation procedure. (need not make serial driver). *Provides DOS device driver features which are COM1: and COM2: like. *Supports 8250, 16450, and 16550 drivers. *More than 8 ports use common IRQ (up to 24 ports). *More than 8 ports in one device driver (up to 64 ports). *More than 8K bytes ring buffer is used in one port (up to 32K bytes). *Support ISA bus communication interface ( it means IRQ select can be 2, 3, 4, 5, 6, 7, 10, 11, 12, 14, 15). *Provides both BIOS call and DOS device driver interface. *Provides C, PASCAL, BASIC, FOXPRO libraries.
Comparison between PCCOM V5.1 and PCCOM V2.0: *Supports both ISA and PCI series cards. |
