DESCRIPTION
The ST78C36/36A is a monolithic Parallel Port Interface for use with IBM PC compatible platforms.
Operation as a standard Centronics printer port is the default, but software may re-configure the device to support bi-directional IBM PS/2 parallel port, Enhanced Parallel Port (EPP), or the Extended Capabilities Port (ECP, as defined by Hewlett Packard and Microsoft) modes.
The ECP modes are supported by a 16 byte FIFO that may be accessed by programmed I/O or DMA cycles.

FEATURES
• IBM AT bus compatible
• Bi-directional port capability
• 16 byte FIFO for ECP modes
• On-chip oscillator (ST78C36A, ST78C36CQ64)
• Software selectable Interrupt (5, 7, or 9) and 8-bit DMA channel (ST78C36CQ64)