6525 Datasheet - Commodore

6525 - TRI-PORT INTERFACE

v -'-'commodore aamicanduct;or group ~~@@ 6525 TRI PORT INTERFACE MPS 6525 TRI-PORT INTERFACE CONCEPT The 6525 TRI PORT Interface (TPI) is designed to simplify the implementation of complex I/O operations in microcomputer systems. It combines two dedicated a bit 110 ports with a third a-bit port programmable for either normal 110 operation or priority interrupt/handshaking control. Depending on the mode selected, the 6525 can provide 24 individually programmable 110 lines or 16 11.

6525 Features

* 24 individually programmable 110 lines or 16 110 lines, 2 handshake lines and 5 interrupt inputs.

* Priority or non-priority interrupts

* Automatic handshaking

* Completely static operation

* Two TTL Drive Capabi Iity

* a directly addressable regist

6525-Commodore.pdf