Image:SchneiderSioManualPage2.jpg|Schneider's Schematic (1985)
Image:NoPicture.png|Paul Bauriedl's Schematic (1987)
Image:Tim Riemann RS232.gif|Tim Riemann's Z80 STI Schematic (1996)
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[[File:Rs232cpc.lzh]] - All info and files on topic
[[Category:Peripherals]]