Tugo Logic

This document contains a set of four electrical engineering schematic diagrams for the TU60 tape drive logic system manufactured by Digital Equipment Corporation.

• Page 1 provides a physical layout of the circuit board (M7760), including the positioning of integrated circuits (ICs), resistors, and capacitors, along with a complete parts list.
• Page 2 details the logic interface, showing the control circuitry for input/output operations, drive selection, and data movement.
• Page 3 depicts the formatter logic, which handles data formatting, timing, and error checking (CRC) processes for tape reading and writing.
• Page 4 illustrates the specific CRC (Cyclic Redundancy Check) logic circuit, utilizing shift registers to ensure data integrity during transmission.