TCP/IP for RT-11

From: Megan <mbg_at_world.std.com>
Date: Sun Aug 23 14:52:54 1998

>OK, I've found the TCP/IP distributions on the Kent University web site.
>The thing is, they're on RX02 disk images of some sort. How on earth do
>I deal with these? They obviosly aren't compatible with Bob Supnik's
>Emulator, at least I couldn't access them.

There is an RX02 emulation in Bob's package (that I remember). The only
thing I can think of which might affect whether they are readable is
whether the disk images you have are sector-by-sector image copies, or
block-by-block image copies. If they were copied using one technique,
but read using the other, then you'll actually be mixing unrelated
sectors together to form a block.

I would have to check the source (or ask Bob) which technique is supposed
to be used to make image RX01/02 copies so that they work.

>I'm wanting to use them on my SMS-1000. It is a PDP-11/73, 4Mb RAM,
>Ethernet, and a funky drive controller which in the case of the 5.25"
>floppy I believe is able to emulate either a RX50 (how it currently is
>set) or a RX02. I'm wondering if the RX02 mode requires the model with
>the 8" drive, which I just happen to have in a shed out back (obviously
>not as decked out, and with a dead hard drive, but still a /73).

Umm... 8" is what pretty much defines RX02s... I don't know of an RX02
which was other than 8" (except for the advanced development RX's which
communicated with the controller via FDDI back in 1983 or so which I
got working using a modified DY handler).

                                        Megan Gentry
                                        Former RT-11 Developer

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Received on Sun Aug 23 1998 - 14:52:54 BST

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