Extended Capabilities (Parallel) Port An upgrade to the original parallel port on a PC, which gives you: Transfer rates of more that two million bytes per second; bidirectional 8-bit operation (a standard parallel port has only 4 input bits); support for CD-ROM and scanner connections; 16-byte FIFO buffer; support for run length coding data compression.
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- TN 0078 Proposed ECP Interface to replace the memory board of the Mark IV.