OT-ish : Centronics printer port timing

From: Chuck McManis <cmcmanis_at_mcmanis.com>
Date: Mon Jan 8 12:13:39 2001

At 07:05 PM 1/8/2001 +0000, you wrote:
>This is sort-of off-topic, but....

Not OTish at all, the Centtonics printer that started this mess is more
than 10 yrs old.

>On which edge of Stb/ (i.e. pin 1 of the 36 pin centronics connector) is
>the data necessarily valid. I'd assumed it was the falling edge of stb/
>(and several printers seem to confirm this), but at least one computer has
>the data lines changing as stb/ goes low, and they're stable as it goes
>high again.

The one Centronics line printer I used at Intel needed the data stable at
the leading edge of STROBE*. I don't know what the setup time was though.

--Chuck
Received on Mon Jan 08 2001 - 12:13:39 GMT