The FlexPort 42s ISA provides four high speed RS232 compliant ports and two parallel ports which can be used with devices such as modems, terminals, printers, etc. The 16550 UARTs have 16 bytes of transmit and receive FIFO buffer. The importance of this large FIFO is to off load CPU tasks and allow for smooth running and error free operation. This FlexPort board is capable of fast 115 kbps operation (operating system permitting).
Technical Specifications
Ports: 4 serial, 2 parallel
Connectors: 37 pin D-sub to 4 DB-9, 2 DB-25
UARTs: 16C550
Addresses: flexible addresses, COM 1-8 & custom addresses available