CM602P, Motorola 6821 PIA Clone, TESTED, (MC6821 MC6820 EF6821) 1pcs | eBay
MC6820
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SWTPC 6800 Microcomputer System : Southwest Technical Products Corporation : Free Download, Borrow, and Streaming : Internet Archive
数字电路中的芯片引脚及主要特性MC6820等通用并行接口(PIA) - 将睿
File:Fairchild 6802 AMI 6820.jpg - Wikimedia Commons
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Références des puces électroniques - «MC6820»
6820 pia for sale | eBay
MC6821 = MC6820 Peripheral Interface Adapter Origineel Motorola | MC6821
Motorola MC6820
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ブルガリア製 MC6820 PIA Pravetz CM602(その他)｜売買されたオークション情報、yahooの商品情報をアーカイブ公開 - オークファン（aucfan.com）
Peripheral Interface Adapter - Wikipedia
Motorola 6800 - Wikipedia
MC6821 Datasheet PDF ( Pinout ) - PERIPHERAL INTERFACE ADAPTER
Vintage Computers Overview - K7MEM
Motorola MC6820L 6820 Peripheral Interface Adapter Sbcdip40 X 1pc for sale online | eBay
Motorola microprocessor
Southwest Technical Products Corporation
M6800 Systems Reference and Data Sheets May 1975
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