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

john_newcombe · 29th Sep 2019, 2:56 pm

I am running my own code as a com file under CP/M (Bios 1.4) accessing the controller directly with the commands you mention. I have followed the Xebec guide for protocol details etc. I think the issue I have is more fundamental. I think I need to pop the scope on the select and other control lines to see what is happening. My code works ok on the emulator, it is the real hardware and the scsi2sd in particular that seem to be the issue at the moment. Naturally I will keep you posted.

29th Sep 2019, 2:56 pm	#240
john_newcombe Hexode Join Date: Apr 2019 Location: Skipton, North Yorkshire, UK. Posts: 252	Re: Gemini 80-Bus System I am running my own code as a com file under CP/M (Bios 1.4) accessing the controller directly with the commands you mention. I have followed the Xebec guide for protocol details etc. I think the issue I have is more fundamental. I think I need to pop the scope on the select and other control lines to see what is happening. My code works ok on the emulator, it is the real hardware and the scsi2sd in particular that seem to be the issue at the moment. Naturally I will keep you posted.