Re: tnc2 eproms...

From: jabennett (mykog@ashtoncomputer.com)
Date: Sat Dec 08 2001 - 07:03:33 EET

  • Next message: Bob Nielsen: "Re: tnc2 eproms..."

    Hi Jeff.

    The latest image is 1.1.8a and is on the TAPR site. I have been using this
    firmware running in the KISS mode on three different linux nodes with no
    problems. In fact, one site has been running for almost a year at this point
    without being touched. A couple of things to try...

    1. Be sure your ftp client is in the binary mode. If not, it would
    definitely corrupt the file data.

    2. You mentioned this was an old TNC2. The original TNC2s only came with 16K
    of RAM. Not sure at which firmware version support for 16K was dropped and
    32K became the standard, but it was early. Binary images written for the 32K
    RAMs will not work if 16K is installed. If you upgrade the memory, be sure
    to read the TNC docs. If I remember correctly, a trace had to be cut and a
    jumper installed. Ditto if the clock speed is changed.

    3. If the LEDs cycle normally, but you are getting garbage on the serial
    output (@9600), you may need to change the OpAmp on the RS-232 output. It
    can appear that the TNC is not working properly if this is the case. The
    replacement is a TL084 (I think). The problem here is the slew rate of the
    earlier parts.

    4. You could have bad RAM.

    To put the TNC in the KISS mode, type KISS Y <cr>RESTART<cr> when the TNC
    command prompt appears. You have to use the RESTART command, not RESET.
    Thereafter, assuming the battery is good, the TNC will remember to go into
    KISS when powered up.

    Hope this helps.

    73, John Bennett
    n4xi

    ----- Original Message -----
    From: "jeff" <glscyb.ybouyvidt@chello212186130208.chello.pl>
    To: "ham" <twalv@sbi.com>
    Sent: Friday, December 07, 2001 9:19 PM
    Subject: tnc2 eproms...

    > I have an old tnc2 that I need to get kiss capability for. I go to
    > ftp.tapr.org to tnc under software_lib and download tnc2v116.bin and
    > burn it.
    > It doesn't boot, I try 1.1.5 same thing. Then I notice looking in the
    > data buffer that the files seem short. So, I download tnc2v113.bin, the
    > version I have in eprom already and compare it to what I have on eprom
    > and lo and behold, it is different.
    > What I downloaded has code up to 0x2bff, about half what is in my eprom.
    >
    > So, how the hell do I get ALL of the eprom binaries????
    >
    > Also, I have an eprom marked 1.1.3 with kiss. It was one that I used
    > with dos nos years ago. The way it worked is after power on you could
    > either go to normal tnc2 v1.1.3 by entering 'h', for Howie code, or it
    > could placed in kiss mode. The problem is I cannot remember how to get
    > it into kiss mode. I can only get it into Howie code. Anybody remember
    > this????
    >
    > Jeff, wd4nmq
    > lzmcyiu@mail.dy.fi
    > -
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