PCL4P can be used in the development of real and protected mode applications
The Personal Communications Library for Pascal (PCL4P) supports real and protected mode DOS, COM1 through COM20 to 115200, 4+ ports concurrently, many Dumb multiport boards, 16550, 16650, 16750 UARTs, interrupt driven, RTS/CTS flow control, any UART address and IRQ, and all memory models. Supports Borland Pascal with Objects, and Turbo Pascal, version 6.0 and up. For RS232, RS422, RS485.
PCL4P can be used in the development of real and protected mode applications running under DOS. The shareware version of PCL4P is fully functional. you can free download PCL4P 6.2 now.