Yup, jumpers set correctly. I think it is the extra load that gave me the trouble and I misinterpreted that. Both boards were 6 chip originally. Do you know what C140 actually does?

Mega ST's are effectively STFM workstations with blitters and more RAM. They also have a battery backed clock, CPU bus slot and no modulator. So, RGB or high res only. They came in 1, 2 or 4 MB configurations. For the most part they are as upgradable as any STF. Have a gander at this; http://www.exx...

OK, so I have a few machines that need fixing. I have just moved house and have finally got a bit of a work area that doesn't mean the kitchen table. I have successfully repaired a few boxes over the years and probably forgotten more than I can remember. :? Gear is limited but spirits are high. I ha...

Yeah, G'day. Not actually an Aussie, I'm Kiwi. Anyway, long time Atari user and started out with an 800XL, which I still have. I have a pretty big collection of machines, Falcon's, TT's MegaSTE's, Jaguar, 2600, 130XE, Lynx..... the list goes on as does the Wife's impatience. Also a few Amiga's... I ...