MOS Technology
Type	Public
Founded	1969
Defunct	2001
Headquarters	Norristown, Pennsylvania
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MOS Technology, Inc. (MOS) is a now-defunct semiconductor company that focused on chips and ICs mainly used in early 8-bit computers. It was also known as Commodore Semiconductor Group (CSG) when Commodore bought it in 1976 to exclusively design chips for their line of computers.

CPU Families

• 4510
• 6501
• 6502
• 6503
• 6504
• 6505
• 6507
• 6508
• 6509
• 6510
• 7501
• 8500
• 8501
• 8502

Peripheral Chips

• 6520 Peripheral Interface Adapter (PIA)
• 6522 Versatile Interface Adapter (VIA)
• 6523/6525 Tri-Port Interface (TPI)
• 6526/8520/8521 Complex Interface Adapter (CIA)
• 6529 Single Port Interface Adapter (SPI/SPIA)
• 6530 ROM/RAM I/O Timer (RRIOT)
• 6532 RAM I/O Timer (RIOT)
• 6545 CRT Controller (CRTC)
• 6551 Asynchronous Communications Interface Adapter (ACIA)
• 6560 Video Interface Chip (VIC), NTSC
• 6561 Video Interface Chip (VIC), PAL
• 6562 Video Interface Chip (VIC), NTSC
• 6566 Video Interface Chip 2 (VIC-II), MaxMachine
• 6567 Video Interface Chip 2 (VIC-II), NTSC
• 6569 Video Interface Chip 2 (VIC-II), PAL
• 6572 Video Interface Chip 2 (VIC-II), PAL-N
• 6573 Video Interface Chip 2 (VIC-II), PAL-M
• 6581/6582/8580 Sound Interface Device (SID)
• 7360/8360 Text Editing Device (TED)
• 8361 Address Generator Unit (AGNUS), NTSC
• 8362 Display Encoder (DENISE)
• 8364 Port Audio UART and Logic (PAULA)
• 8367 Address Generator Unit (AGNUS), PAL
• 8370 "Fat" AGNUS, NTSC
• 8371 "Fat" AGNUS, PAL
• 8372/8375 ECS AGNUS
• 8373 ECS DENISE
• 8374 AGA ALICE