At 02:16 PM 9/24/2003 -0700, John Pearson wrote:
>I highly doubt it - I've never come across a single RS232 port that doesn't
>work fine with 5V levels
>(many thousand products in the field).
>Has anyone ...?

It's a problem of margins.
RS-232 is designed to work in steel mills, under very adverse conditions.

When you cheat, you spend some of the margin.
If the other guy spent your half already, then you're in trouble.

Same thing on serial bit rates. Both of you can't be 6% off in opposite
directions, but one of you can.

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