-------- In message <569b8b2e.5070...@rubidium.dyndns.org>, Magnus Danielson writes:
>>> I think you should develop that line of thought, to detail why it helps >>> on GPIB and why not on serial. >> >> It's really very simple: RS-232 sends blind, you don't even need to >> know if there is a receiver or what it does. If the receiver cannot >> keep op, data is simply lost. >> >> GPIB handshakes every byte, so the actions of the receiving end affects >> the transmitting end - in particular if the receiver cannot keep up. > >OK, you where thinking about the flow-control. > >You can have RS-232 wired up to do flow-control (hardware-flow-control), But the important point is you don't have to do that, all you need is two wires: GND-GND and TXD->RXD With GPIB that option does not exist, sender and receiver are always in lock-step. Therefore, talk-only mode is a big advantage in terms of decoupling on RS-232 and makes almost no difference on GPIB. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.