View Single Post
Old 14th Oct 2020, 9:15 pm   #431
john_newcombe
Hexode
 
Join Date: Apr 2019
Location: Skipton, North Yorkshire, UK.
Posts: 252
Default Re: Gemini 80-Bus System

The Rodime R201 disk in my Gemini MFB is alive and well after a change of 2 TIP121 motor drive transistors. A massive thanks to Daniel Whittaker for telling me about this common fault with these drives. The drive now boots to BIOS 3.4 MFB and has a range of MFB-1 and MFB-2 software stored on it.

The amazing thing is that Daniel was an employee of Gemini and in 1986 was upgrading MFB machines, it turns out that the 'Tested By' stickers on some of my Gemini cards were signed by him in 1986 and so it was Daniel who upgraded my system from MFB-1 to MFB-2. Nice!
john_newcombe is offline