[vcf-midatlantic] CTTY in Freedos

systems_glitch systems.glitch at gmail.com
Wed Apr 18 14:25:28 EDT 2018

I do the same -- move stuff around using Linux. I do have Mike Brutman's
mTCP on the DOS install, which is useful for grabbing the occasional thing
over the network using FTP. But, for the most part, I reboot into the Linux
install and copy files over NFS.

Assuming you do get CTTY working, there are some issues with it: anything
that talks directly to video memory will bypass it and be unusable. I found
that the DOS software for my EPROM programmer does that. You might look at
plugging an IP KVM module onto the machine and getting remote access that
way. Being a P4 with ISA, if it's an industrial box, it may already have an
out-of-band (OOB) management module you can talk to over the network.

If you do go the IP KVM route, beware of cables that talk over Cat5 but
aren't an actual IP KVM module. They're really cheap and don't require
power, but also won't do what you want :)


On Wed, Apr 18, 2018 at 1:26 PM, Dave McGuire via vcf-midatlantic <
vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:

> I don't have an answer to your specific question, but how I addressed this
> problem is to build up the system disk to dual-boot Freedom and Linux, with
> Linux able to access the DOS partition. A lot (actually all) of my tape
> imaging activities are done under Linux, but I can easily move stuff in and
> out of the DOS side using civilized network access.
> -Dave
> --
> Dave McGuire, AK4HZ
> New Kensington, PA
> On April 18, 2018 12:44:58 PM Jeff G via vcf-midatlantic <
> vcf-midatlantic at lists.vintagecomputerfederation.org> wrote:
> > Hi all - I'm in the process of building a mega disk-imaging box, er
> really
> > a "vintage computing support center" box to help with creating disks,
> > imaging disks, etc. It even has a Needhams ISA rom burner (and get this,
> > its a P4!). The computer runs Freedos as its main OS. Getting data
> to/from
> > the computer isn't a problem as I have a couple 2gb USB sticks that the
> > BIOS supports as a dos-compatible hard drive, as long as I boot with one
> in
> > it.
> >
> > That said, I was hoping that on occasion to be able to control it from my
> > main computer, and figured a serial cable and CTTY would work, but
> despite
> > having the serial port working via Telix (can talk to my main computer
> > running Putty), CTTY gives me a write error (and the usual
> > abort/retry/fail). Anyone know why that is and how to fix it? I'm
> thinking
> > CTTY is looking at control lines, but I have a serial breakout box on it
> > now and cts/rts criss-crossed as they should.
> >
> > Thanks in advance!
> >
> > Jeff G #3 - aka "Bags"

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