IBM 3194Q Base Logic Board with Floppy Drive Controller 1614961

IBM 3194Q Base Logic Board with Floppy Drive Controller 1614961

The IBM 3194Q is a base logic board and control module used in IBM System/3 and compatible computer systems. This is the primary circuit board assembly that manages processor control, memory arbitration, and peripheral I/O—particularly floppy drive control via the integrated 1614961 controller. As a foundational component of the 3194 control subsystem, this board represents mid-1970s IBM mainframe-era solid-state switching and logic design.

Specifications & What's Included

• Make/Model: IBM 3194Q
• Part Number: 1614961
• Board Type: Base Logic Control Module
• Integrated Floppy Drive Controller
• Condition: Used, pulled from working environment
• Note: Faceplate is missing; circuit board assembly is complete and intact

Applications

The IBM 3194Q base logic board was engineered as the control heart of System/3 environments, managing the interaction between the main processor, memory subsystem, and peripheral devices including floppy disk drives, card readers, and printers. This board is a critical component for anyone restoring or maintaining vintage IBM System/3 installations or operating System/3 emulation and legacy computing environments. The integrated floppy drive controller on this board made it essential for data I/O operations during the System/3 era. This is 1970s-era IBM computer architecture—a period when discrete and early integrated logic was giving way to more sophisticated control systems on a single board.