+++ Day is Coming!
Hayes earned their +++ modem escape sequence patent on October 22, 1985. This October 22nd, join us in celebrating 40 years of the three-plus salute — and let’s +++ ourselves back to 1985!
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The Basement BBS
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A +++ (firmware/software) solution was needed in part because not all computers back then implemented the full RS232 Standard. So, doing things like flashing the DTR pin on/off would not work, for example. Pictured below is the RS232 connector for the Atari 8 bit. Note the missing (unimplemented) pins in the connector.