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

JohnBHanson · 19th May 2019, 8:36 am

You need to take the address of the patch 6ef, add the base of the bios f300 to get f9ef and then
work out
f9ef - dd00 + 0200 = 1eef

This should be 20h and you need to change it to 01h

Try that.

19th May 2019, 8:36 am	#65
JohnBHanson Heptode Join Date: Aug 2009 Location: Worthing, Sussex, UK. Posts: 661	Re: Gemini 80-Bus System You need to take the address of the patch 6ef, add the base of the bios f300 to get f9ef and then work out f9ef - dd00 + 0200 = 1eef This should be 20h and you need to change it to 01h Try that.