Brian,
 
Sorry I didn't get back to you sooner.  I missed the first post.
 
Anyhow I've got a couple of points to make, so please bear with me.
 
1)  Any form of SLIP/PPP/TIA/SLIPKNOT/etc is not supported on any of
    the Applied Science systems.  In fact, is it often discouraged because
    most of these programs are poorly written and tend to cause system
    problems with hung connections and processes that never die.
 
    Just a warning.
 
2)  The Gandalf does not provide 8-bit clean connections, through TCP/IP.
    It does provide 8-bit clean connections through serial lines,
    like the class MIAVX1.
 
3)  The Gandalf does provide both 8-bit and 7-bit connections.
    8-bit connections come through if you hit ; instead of RETURN
    after getting a CONNECTED prompt.
 
    Zmodem requires an 8-bit connection, but doesn't care if it's a
    clean connection.  It has all kinds of error correction and recovery
    built into it.  Zmodem was designed for hostile environments like
    TCP/IP.
 
The whole problem here is TCP/IP.  TCP/IP is a packet oriented transmission
protocol.  That means that you get bursts of packets that are re-assembled
at the destination.  Zmodem would really like a serial line, where the data
flow is continuous and uninterrupted.  SLIP/PPP/TIA/SLIPKNOT/etc all require
a serial line connection to operate at peak efficiency.  They need that
continuous data flow.
 
Hope this helped.
 
-Rob
 
Brian J. Bernstein ([log in to unmask]) wrote:
:   (I guess this place is as good as any for this question..)
 
:   I've just started using a SLIP-type program (program on UNIX, client on my A
miga [sorry
: IBM/Mac people:)]) that works fine except for one small problem; it seems that
 my connections to
: Phoenix are not 8bit clean.
 
:   I have always (since about 1991) 'woken-up' the gandalf by pressing ';' inst
ead of return (as
: I was told way back that this would make gandalf 8-bit) and had my settings to
 8N1, AND have
: sucessfully used Zmodem (at least for downloading) for quite some time now. I
would assume that
: since Zmodem works fine (1600+ cps) that the line was 8-bit clean. Now that I
have been using
: this program, 8-bit clean mode does not work, where a 7-bit 'send printable ch
ars only' mode is
: the only way to get this thing going. What is the deal here?
 
:   I have tried going directly to Phoenix through the gandalf, and have tried t
elnet to phoenix
: from the VAX to get 8-bit, but it just doesn't work. Are the connections 8-bit
 clean or have I
: just been pressing ';' for no reason all these years?
 
: Thanks..
 
: ==============================================================================
: Brian J. Bernstein                == Amiga 2500/030/882 25MHz Quantum 105MB
: [log in to unmask] == 1MB Chip, 2MB 16bit fast, 4MB 32bit fast
: http://phoenix.sas.muohio.edu/    == A2286 w/Boca Super X VGA 1MB    A1960
:     users/bernstbj/www/Brian.html == USRobotics v.Everything 28,800
 
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