Re: ADT via direct modem connection

[pausch@saaf.se (Paul Schlyter)]

In article <9njlq2$fre$1@nserve1.acs.ucalgary.ca>,
Byron Desnoyers Winmill <wbdesnoy@acs5.acs.ucalgary.ca> wrote:
 
> The issue is that the iMac (typically) does not have a serial port.
 
OK, then transfer your Apple II disk images to a normal Mac and then
use a floppy disk to transfer them to your iMac....
 
....ooops!  The iMac doesn't have a floppy drive either... !!!!  Now,
_what_ does the iMac actually have ???????????   :-)))
 
> There are a few things which I'm uncertain on though: I believe that modems
> treat particular sequences of characters as control codes.  For example:
> '+++' to enter the modem's command mode,
 
Not quite.  To make your modem reenter command mode, the proper protocol
is:
             (pause 1 sec)  '+++'  (pause 1 sec)
 
i.e. only if you sorround the '+++' with pauses will they cause the
modem to enter command mode.  If ADT encounters three '+' following
one another in a disk image it won't pause, so this is no problem.
 
 
> and probably XON/XOFF for software flow control.
 
This can be turned on and off.
 
Another thing to consider is hardware flow control via the RTS/CTS
lines: you must then feed the modem the proper signals, or else it
won't transfer any data.
 
-- 
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