Re: Serial Link between Mac and IIgs

[oz390gta <oz390gta@gmail.com>]

On Jan 19, 7:00 pm, spectrumda...@nospam.com (Ewen) wrote:
> oz390gta <oz390...@gmail.com> wrote:
> > I have been trying to set up a stable/fast serial link between my IIgs
> > (ROM03) and my MacPro with a Keyspan USB to serial adapter. This
> > connection works fine with ADTPro and it is quite quick at 115200
> > kbps. When I try a serial link with ProTerm on the GS and zterm on my
> > Mac I can not get a reliable connection above 9600 kbps. I ideally
> > want to transfer files between the machines at a half decent speed in
> > SHK format so I am not stuck with having to convert SHK to DSK or 2mg
> > files before sending them via ADTPro.
>
> >  Am I using the right software? The hardware seems OK as it works with
> > ADTPro. Am I running into some limitations I don't know about?
>
> As others have said, the best you can expect under normal circumstances
> is 9600 baud. If your IIgs is acclerated, although the port will not run
> any faster, the software driving it will, so you may achieve a slight
> improvement. Using a separate serial card I think can improve matters,
> but that I have never tried. Others may be able to help on that score.
>
> The fastest connection between your IIgs and a Mac is to use Ethernet,
> not serial. You would need an Ethernet card in the IIgs, such as the
> Uthernet card, and then install Marinetti, and use my Freeware SAFE2 FTP
> program. With an accelerated IIgs, I have achieved very fast transfer
> speeds to a Mac under FTP, almost to the limit of the 10base connection.
> Ethernet transfers are of course error free. The advantage as wel, is
> that it need not be a Mac, as any computer running FTP can be at the
> other end. If your Ethernet LAN is connected to a router, you can also
> work across the net.
>
> Cheers - Ewen

I have an Uthernet card but for some reason it is very unreliable and
very poor speeds. I can get SAFE2 working sometimes but it will only
transfer a few 200k before giving me errors. I have given up on the
uthernet card for the moment. I might revisit it one day.

Craig