RastPort: Tech Blog – 8520 Complex Interface Adapter Specification
Check the Commodore 64 User Port - Amedeo Valoroso
MOS 6522 Versatile Interface Adapter | Project Area51
8521 – My old computer
MOS Technology CIA - Wikiwand
NMOS/CSG 8364 (PAULA) and 8520 (CIA) datasheets
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6526 Complex Interface Adaptor (CIA) - datasheet : Commodore Semiconductor Group : Free Download, Borrow, and Streaming : Internet Archive
6526 Complex Interface Adaptor (CIA) - datasheet : Commodore Semiconductor Group : Free Download, Borrow, and Streaming : Internet Archive
MOS 6526R4 IC Cia (2 X) pour Commodore C64/SX64/C128 - VC20 #23 83 EUR 60,40 - PicClick FR
pub/cbm/documents/chipdata/
CIA - C64-Wiki
RastPort: Tech Blog – 8520 Complex Interface Adapter Specification
MOS 6522 Versatile Interface Adapter | Project Area51
GitHub - Stealth385/DocsAndLinks
NMOS/CSG 8364 (PAULA) and 8520 (CIA) datasheets
MOS 6526 CIA as a FPGA - Legacy Personal Blogs - Personal Blogs - element14 Community
Computers, Tablets & Network Hardware Genuine part working. Commodore MOS 6526 CIA Chip for Commodore 64/128/1570/1571 fysoline.vn
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What use are the data direction registers in the MOS 6526 CIA? - Retrocomputing Stack Exchange
CIA - C64-Wiki
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