[HECnet] Vaxsvtation 4000 graphics to VGA?

[Johnny Billquist]

On 2016-04-20 20:05, Sampsa Laine wrote:
>
>> On 20 Apr 2016, at 21:03, Johnny Billquist <bqt at softjar.se> wrote:
>>
>> On 2016-04-20 19:58, Sampsa Laine wrote:
>>> I’ve got two VAXstation 4000s, and I think they both have a graphics card in them - one with a weird connector with 3 circular sockets and another with a DB25-looking thing and they seem to have a picture of a monitor on them.
>>>
>>> So a couple of questions?
>>>
>>> Anyone know where I can get an adapter cable for one or the other of those to a VGA monitor? (basically, does anyone have a spare that they’d like to sell)?
>>>
>>> Are they likely to work with an LCD monitor or do I need to get an older CRT one?
>>
>> Basically the video output from all DEC stuff is analog video with sync on green. So just find a video converter that can take analog RGB video input with sync on green, and then output to VGA or whatever, and you're good.
>>
>
> OK, got that. What about the cabling, anyone got any spares lying around? :)

Not me. But the connector, which is like a DA-15 shell, with just three 
coaxial connectors inside were used by others than DEC as well. So there 
are some possibilities to locate one if you search around.

> Also how do I hook up a mouse/keyboard to these things (I think the icon above the DB25 looking connector implied it carries video, keyboard [LK-style with RJ connector like on the VT420 I hope] and mouse [no idea about DEC mice])?

That DB25 would be a DA-15, I suspect. Yes, that was sometimes used to 
get to a keyboard and mouse connector. But, as far as I can remember 
from my VAXstation 4000, the keyboard and mouse connectors are actually 
on the backside of the box.

	Johnny