On 11/19/18 1:48 PM, Paul Koning wrote:
On Nov 19, 2018, at 4:01 PM, Alan Perry via cctech <[email protected]>
wrote:
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_2306314600917762048_n.jpg?_nc_cat=105&_nc_ht=scontent-sea1-1.xx&oh=81c3e1ded7cb1eb6b9d1200a604d9889&oe=5C7778F1
alan
It looks like you turned the intensity up so far that the retrace didn't get
blanked fully. Not much choice about that given the bad screen, I suppose.
Actually, the intensity is turned all of the way up because that is
where it happened to be when I connected everything up. I was so focused
on whether DOS had booted that it didn't even click in my head that I
could adjust the monitor to make it easier to read. I didn't notice that
I had things turned all the way up or even notice the retrace lines
until later when I looked at that picture.
alan
