Re: LZ: RS-232 & RS-422 Standards

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Re: LZ: RS-232 & RS-422 Standards

>No. What I meant is that the Mac OS and serial hardware handle the ports,
>meaning that applications cannot manipulate the individual lines on the
>port directly. The only link cable that is capable of turning RS-232 into
>TI protocol is the TI GRAPH-LINK. Homebuilt links rely on the ability to
>manipulate the signalling lines of the serial port directly. Macs do not
>allow this (to my knowledge). This does not matter for standard RS-232
>equipment, but it makes it impossible to use unsophisticated hacks like
>the "$4" serial port link.
>
>-Isaac
>
>--
>Isaac Salpeter
>the ticalc.org project
>isaac@ticalc.org
>--


i think I'm going to have to agree with Isaac, my knowledge of the mac
serial hardware is limited, I spend most of my time looking at the software
aspect of the mac, but from what I've read in Inside Macintosh is that you
'out' to the port, and then the rom takes care of how it gets 'out'ed.


                                     -C.J.-
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