This mini forum is intended to provide a simple means of discussion about the Shelton Instruments Sig-Net computer. If you want to share your own experience or memories, or add relevant information about this system: post a message!

I own a Shelton Signet 200 cabinet, with twin floppy disk drives built-in and a separate monitor.

I am trying to find out if anyone has a copy of CP/M, or other software for this machine please?

Best wishes, Ross

I used to build the signets. I started working with Chris Shelton in 1981 building the signet3 systems and was the main person doing customer support. It was very sad to see the end of the signet in 1994. I was the only one from the early years still supporting the product. I ended up buying all the stock, some 300 units in various forms and provided support to the various end users still using the Signet3 multiuser systems. I would love to hear from any one who might have spoken to me.

I spent many years programming and selling Shelton Sig-net they were designed by a guy called Chris Shelton of Shelton Instruments and they had CPM operating system. I used to program in Microsoft Compiled Basic and the biggest system I sold was a 48 user to Sunseeker Travel in Huddersfield in 1988. Originally it was one processor per screen all connected to a hard disk using sheltons purpose designed ringring system which was a bus between the processors and the z80 running the hard disk. Rhodime made in scotland in 7/14/21 megabytes that formated down to 5/10/15 MB. I have lots more information if your interested.

It would be nice if you could send us some pictures of this rare system!

I Currently own one of these-
without a diskette drive. The case to this machine is easy to remove because it has a little button you can push to unlock it. I''ve been trying to find out who made my system$ and this is the same exact model. thanks old-computers.com!