Altair32 Emulator

From: Cini, Richard <RCini_at_congressfinancial.com>
Date: Fri Nov 15 09:56:12 2002

John:

        The way the telnet server within the Altair32 works is that it's
activated upon the "first" access of a CPU I/O port by a running program.
So, for example, if you are running a program that doesn't interact with any
of the console I/O ports (0/1, 20/21 octal), the telnet server will not be
activated and any telnet client will bomb out, complaining that no server is
found.

        So, the sequence I use is to run HyperTerm and "disconnect" from the
telnet port (UDP port 23 by the way -- the standard telnet port). Then, I
run the emulator, attach disks and "boot" CP/M. I run ZoneAlarm, so I get a
notification that a telnet server is starting (with a TCP address of
127.0.0.1), so I allow the access then "connect" HyperTerm.

        If you don't run ZoneAlarm, you just have to guess the timing when
connecting. When booting CP/M, it's no more than a few seconds. If you look
at the front panel address LEDs, you can "see" that it drops into an idle
loop (the address LEDs appear to only reference a tight range of addresses).
This is the signal that the CBIOS is waiting for a "live" connection.

        If you prefer, you can use the built-in Windows Console. That
doesn't have the same connection problems as telnet. With telnet, however,
you should be able to reach your Altair across a subnet (although I've never
tried it).

        The disks are full with stuff, and there certainly should be more
than 2-3 files. The CP/M 2.2 disk probably has 25 files on it.

Rich
Received on Fri Nov 15 2002 - 09:56:12 GMT