30 Jun
2008
30 Jun
'08
11:50 a.m.
Is there any way to connect 13W3 output of GXP550P (graphics card
in RS/6000 p43) to 13W3 SGI monitor (GDM-20E21)? In order to connect
SPARCstation I had to make a little modification of the SS2 to make
it generate sync-on-green signal. Will the same modification work
with IBM?
--
If you cut off my head, what would I say? Me and my head, or me and my body?
2 Jul
2 Jul
12:34 a.m.
On Mon, 30 Jun 2008 20:50:25 +0200
Edward Tomasz Napierala <trasz at FreeBSD.org> wrote:
Is there any way to connect 13W3 output of GXP550P
(graphics card
in RS/6000 p43) to 13W3 SGI monitor (GDM-20E21)? In order to connect
SPARCstation I had to make a little modification of the SS2 to make
it generate sync-on-green signal. Will the same modification work
with IBM?
Most likely not as the Sun generates C-Sync. The IBM machine generates
either Sync on Green or separate H/V-Sync. Just try. Connect the
RGB-leads and wait to get a picture. If you get one, the IBM does Sync
on green and you are done. If not it does separate H/V-Sync. In that
case you have to build a custom cable. Google for pinouts.
The SGI CRTs are Sony OEM Trinitron CRTs. To my experience the Sonys
sync to anything they can find. C-Sync, H/V-Sync or Sync on Green, what
ever they get as long as the monitor can take the timing.
--
tsch__,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
3 Jul
3 Jul
3:28 p.m.
On 0702T0934, Jochen Kunz wrote:
Yup, it does sync-on-green. However, the picture is _very_ badly
distorted, and, what's strange, in several ways. First, the palette
seems to be (it's hardly visible) messed up. Second, there is
something wrong with synchronisation - vertical screen edges are
not vertical at all, they are 'torn' - but at least don't move, the
distortion is still. However, if the monitor's OSD menu is on the
screen, it 'jumps' up and down two milimeters every half a second,
probably due to yet another problem with synchronisation.
Is the card toast? From the diagnostic software point of view
(diag under AIX) it's ok. I don't think that software checks the
analog part ;-)
--
If you cut off my head, what would I say? Me and my head, or me and my body?
Is there any
way to connect 13W3 output of GXP550P (graphics card
in RS/6000 p43) to 13W3 SGI monitor (GDM-20E21)? In order to connect
SPARCstation I had to make a little modification of the SS2 to make
it generate sync-on-green signal. Will the same modification work
with IBM?
Most likely not as the Sun generates C-Sync. The IBM machine generates
either Sync on Green or separate H/V-Sync. Just try. Connect the
RGB-leads and wait to get a picture. If you get one, the IBM does Sync
on green and you are done. If not it does separate H/V-Sync. In that
case you have to build a custom cable. Google for pinouts.
11:59 p.m.
On Fri, 4 Jul 2008 00:28:29 +0200
Edward Tomasz Napierala <trasz at FreeBSD.org> wrote:
First, the palette
seems to be (it's hardly visible) messed up.
In this case it seems that the RGB
leads got messed up. E.g. the green
output going to the red input. No surprise that this also messes up
sync if sync is expected on green...
Usually I do the same as Sridhar:
Connecting two 13W3-BNC cables together with BNC couplers. (BNC-T
pieces from your old Cheapernet cabling can be used in absence of
proper BNC couplers.)
--
tsch__,
Jochen
Homepage: http://www.unixag-kl.fh-kl.de/~jkunz/
2 Jul
2 Jul
5:30 a.m.
Edward Tomasz Napierala wrote:
Is there any way to connect 13W3 output of GXP550P
(graphics card
in RS/6000 p43) to 13W3 SGI monitor (GDM-20E21)? In order to connect
SPARCstation I had to make a little modification of the SS2 to make
it generate sync-on-green signal. Will the same modification work
with IBM?
I'm pretty sure that the SOG signal should already be there. The way
I'd do it is to hook:
13w3 -> IBM Cable -> 3BNC -> BNC Couplers -> 3BNC -> SGI Cable -> 13w3
It's one sure way to get the pinouts right.
Peace... Sridhar
5796
days inactive
5800
days old
4 comments
3 participants
participants (3)
-
jkunz＠unixag-kl.fh-kl.de -
ploopster＠gmail.com -
trasz＠FreeBSD.org