UK Vintage Radio Repair and Restoration Discussion Forum - View Single Post - Gemini 80-Bus System

john_newcombe · 20th May 2019, 8:37 am

Thats it. Booted to CP/M (32k and 64k) all files visible etc. and able to run programs as expected. I can't quite believe it really!

John: Thank you so much for you help, it has been invaluable.

I need to get my head around a couple of things now. The disk images are 35 track images (gemddds) and it would make sense for these to be 80 track (gemqdds). Naturally I could extend the disk image file with 'e5' blocks but I suspect there is more to it than that.

The second thing I would like to understand better is the issues you had in creating the 64k version of CP/M. I will re-read your posts on the matter.

In terms of hardware, I will try and fix the IVC today, boot to CP/M and add my real floppy disk as a second drive.

I will write up the Gotek settings today/tomorrow and post them here and on glasstty.

Once again, many thanks.

20th May 2019, 8:37 am	#69
john_newcombe Hexode Join Date: Apr 2019 Location: Skipton, North Yorkshire, UK. Posts: 252	Re: Gemini 80-Bus System Thats it. Booted to CP/M (32k and 64k) all files visible etc. and able to run programs as expected. I can't quite believe it really! John: Thank you so much for you help, it has been invaluable. I need to get my head around a couple of things now. The disk images are 35 track images (gemddds) and it would make sense for these to be 80 track (gemqdds). Naturally I could extend the disk image file with 'e5' blocks but I suspect there is more to it than that. The second thing I would like to understand better is the issues you had in creating the 64k version of CP/M. I will re-read your posts on the matter. In terms of hardware, I will try and fix the IVC today, boot to CP/M and add my real floppy disk as a second drive. I will write up the Gotek settings today/tomorrow and post them here and on glasstty. Once again, many thanks.