The PC87322VF incorporates a Floppy Disk Controller (FDC) two full function UARTs an enhanced parallel port and IDE interface control logic in one chip The PC87322VF includes standard AT address decoding for on-chip functions and a Configuration Register set offering a single chip solution to the most commonly used ISA EISA and MicroChannel peripherals The on-chip FDC is software compatible to the PC8477 which contains a superset of the mDP8473 and NEC mPD765 and the N82077 floppy disk controller functions The on-chip analog data separator requires no external components and supports the 4 MB drive format as well as the other standard floppy drives used with 5 25 and 3 5 media Automatic media sense support is provided In the PC87322VF the UARTs are equivalent to two NS16450s or PC16550s The bidirectional parallel port maintains complete compatibility with the ISA EISA and MicroChannel parallel ports The enhanced parallel port is compatible with the IEEE 1284 standard and also supports EPP Ver 1 7