MOS Technology 6501

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The 6501 is an eight-bit microprocessor, the first sold by MOS Technology. The 6501 is pin-compatible with the Motorola 6800 and is the first member of the 65xx series of microprocessors.

The 6502 is a 6501 with the pins re-arranged following a lawsuit by Motorola over the 6501's pin arrangement. The 6502 also added a two-phase clock generator, so it only needed a single phase clock input, simplifying system design. See the 6502 article for further details.

This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.

65xx-series CPUs from MOS Technology, second source/clone vendors, and the Western Design Center

MOS 4510 ● MOS 6501 ● MOS 6502 ● WDC 65C02 ● Hudson HuC6280 ● Ricoh 2A03 ● MOS 6507 ● MOS 6508 ● MOS 6509 MOS 6510 (and 7501, 8500, 8501) ● MOS 8502 ● MOS 65CE02 ● WDC 65802 ● WDC 65816 ● Ricoh 5A22 ● Nintendo SA-1