The BBSIO2 2 Port Serial I/O

Low Cost
1/2 ISA Slot
Industry Standard DB9M Connectors
High Speed 16C550 UARTs with FIFOs
Shared or Individual IRQs
PC/XT/AT/386/486/Pentium Compatible

The BBSIO2 provides 2 high speed Serial Ports at low cost. The Industry Standard DB9S connnectors connect to external devices. The board uses 16C550 UARTS with FIFO for fast data flow. The addresses may be selected in unused address space as to not conflict with existing ports. IRQs may be either cascaded to one IRQ or each port may have it's own IRQ selected. Works with DOS and Windows!