General Description
The ACT818 is a high-speed, general-purpose pipeline register with an on-board diagnostic register for performing serial diagnostics and/or writable control store loading.

FEATUREs
■ On-line and off-line system diagnostics
■ Swaps the contents of diagnostic register and output register
■ Diagnostic register and diagnostic testing
■ Cascadable for wide control words as used in microprogramming
■ Edge-triggered D registers
■ Outputs source/sink 24 mA
■ ACT818 has TTL-compatible inputs
■ ACT818 is functionally- and pin-compatible to AMD Am29818 and MMI 74S818

APPLICATIONs
• Register for microprogram control store
• Status register
• Data register
• Instruction register
• Interrupt mask register
• Pipeline register
• General purpose register
• Parallel-serial/serial-parallel converter