FDC9793P / FDC9793

FDC9793P / FDC9793 is a specialized Integrated Circuit (IC) used as a Floppy Disk Controller/Formatter. It was originally produced by manufacturers like Philips and Standard Microsystems (SMC), primarily for high-density floppy disk support in legacy computing systems.

Technical Details

• Function: It serves as a floppy drive control chip, often paired with an interface circuit (such as the FDC9229BT) to manage data rates and formatting.
• Performance: Compared to standard controllers like the 1772, the FDC9793 was designed to support higher data rates.
• Historical Context: It was famously used in early workstation hardware, such as the pre-production Acorn A500, to enable high-density floppy support.
• Part Numbers: Often listed as FDC9793 SMC8816 or under the Philips brand.

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