[Coco] Re: Help using the Coco3 with a 1084S-D2 Monitor

[Torsten Dittel]

Hi Hank,

> You guys have any ideas on this one?

I checked your pin out on all 3 components and it looks OK (just to
complete it, pins 6,7,8 on the NEC 3D are the GND lines for R,G,B).

I noticed "glitches" in vertical sync on my 1084S-P1 (AFAIR the only
difference between the P1 and the D2 is a head phone jack) too. The
funny thing is that it's only with one of my two (PAL) CoCo3s. Both work
fine with the NEC 3D. One of the CoCo's is US-made, the other Korean.
The difference is, that the (newer) US model has a new version of the
GIME chip and I guess this is causing the problems because of slightly
different signal timing and/or amplitudes. I never cross-changed the
GIME chips nor checked it out with an oscilloscope.

Hope this helps.

Regards,
Torsten from Germany