Rainbow Floppy Controller

This document contains a series of six schematic sheets detailing the design of the floppy disk controller for the Rainbow 100 system. The schematics cover the following sections:

• FDC: Primary controller circuitry using the 1793 disk controller chip.
• Drive Connectors: Interface connections for drives A-B and C-D.
• Control/Status Ports: Logic for managing drive selection and status monitoring.
• Write Precompensation: Circuitry to adjust write signals.
• Read Data: Logic for processing read signals.
• Data Separator and Read Clock VCO: Components for data extraction and timing synchronization.