19 Nov
2018
19 Nov
'18
1:48 p.m.
On Nov 19, 2018, at 4:01 PM, Alan Perry via cctech
<cctech at classiccmp.org> wrote:
On 11/19/18 12:18 PM, Warner Losh wrote:
>
>
> ...
>
> I have a VR201 that's like this myself, and I've been too scared to try to
fix it. Instead, I've tried bodging together various hacks to try to get the signal
into a modern composite to VGA converter...
I've been thinking about that. There are assorted converters around for sale but the
trick seems to be the sync on green (rather than separate sync which is common in various
other flavors).
Is there a worked-out design for this anywhere?
Finally, a
VR201 specific question. I booted the Rainbow over the
weekend and, looking through broken-down PVA, I could see the
Rainbow has booted and I could enter DOS commands. I could also
see white retrace lines. What is the likely cause of that on a
35-year-old CRT?
Pics?
Here is an attempt to use Facebook for image hosting here. If it doesn't work, I will
put the image up on a real image hosting site.
https://scontent-sea1-1.xx.fbcdn.net/v/t1.0-9/46508514_10156808244977208_23…
alan 