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</head><body text="#000000">Tindie link? I can't find it using various
search terms.<span>...<br>
<br>
Might be useful for my 3/50<br>
<br>
Steve<br>
</span>
<blockquote type="cite"
cite="mid:B3A5D217-1EDA-4022-968E-541E08603718@belgers.com"
style="border: 0px none ! important;">
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style="margin:30px 25px 10px 25px;"><div
style="width:100%;border-top:2px solid
rgba(146,154,163,0.7);padding-top:10px;"> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:49%;">
<a style="color:#485664
!important;padding-right:6px;font-weight:500;text-decoration:none
!important;" href="mailto:rescue@sunhelp.org" moz-do-not-send="true">Walter
Belgers via rescue</a></div> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:48%;text-align:
right;"> <font color="#909AA4"><span style="padding-left:6px">October
21, 2023 at 4:19 AM</span></font></div> </div></div>
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__pbrmquotes="true"
style="color:#909AA4;margin-left:24px;margin-right:24px;"><meta
http-equiv="Content-Type" content="text/html; charset=utf-8">Hi,<div
class=""><br class=""></div><div class="">A small update on the ECL to
VGA adapter.</div><div class=""><br class=""></div><div class="">I was
finally able to figure out a way to hook up the Sun 2/50 to the TenoxVGA
adapter in a way it produced reasonable output on a VGA monitor. I
originally used an Extron RGB-HDMI 300A to convert VGA from the TenoxVGA
adapter into HDMI to feed that into a modern monitor.</div><div
class=""><br class=""></div><div class="">I took out the Extron and just
plugged TenoxVGA's output into an old VGA flatscreen. That worked much
better!</div><div class="">See <a href="https://giga.nl/tenoxvga.jpg"
class="" moz-do-not-send="true">https://giga.nl/tenoxvga.jpg</a> for a
picture of the screen.</div><div class=""><br class=""></div><div
class="">Shameless plug: since I had 10 of them made to reduce costs, I
am selling the remaining 9 of them via tindie.</div><div class=""><br
class=""></div><div class="">Regards,</div><div class="">Walter.</div><div
class=""><br class=""></div><div class=""><br class=""></div>
<br><fieldset class="mimeAttachmentHeader"></fieldset><br><div>_______________________________________________<br>rescue
list - <a class="moz-txt-link-freetext" href="http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org">http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org</a><br></div>
</div>
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style="margin:30px 25px 10px 25px;"><div
style="width:100%;border-top:2px solid
rgba(146,154,163,0.7);padding-top:10px;"> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:49%;">
<a style="color:#485664
!important;padding-right:6px;font-weight:500;text-decoration:none
!important;" href="mailto:rescue@sunhelp.org" moz-do-not-send="true">Walter
Belgers via rescue</a></div> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:48%;text-align:
right;"> <font color="#909AA4"><span style="padding-left:6px">September
14, 2023 at 1:32 AM</span></font></div> </div></div>
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__pbrmquotes="true"
style="color:#909AA4;margin-left:24px;margin-right:24px;"><blockquote
type="cite"><pre wrap="">On 14 Sep 2023, at 05:01, Chris Hanson <a class="moz-txt-link-rfc2396E" href="mailto:cmhanson@eschatologist.net"><cmhanson@eschatologist.net></a> wrote:
I believe the manual for the TTM194 has the pinouts for both ends of its cable, I'll see if I took a pic of the page(s) if you can't find a copy online, otherwise I can probably dig it out this weekend.
</pre></blockquote><pre wrap="">I saw technical documents, but couldn't find the pinout there, but haven't looked for the normal manual. Thanks for the tip. (I will away for a while so it will be after I return. When I have everything working, I'll mail to the list so the information gets archived.)
</pre><blockquote type="cite"><pre wrap="">Incidentally, my conspiracy theory about why Atari chose ECL for the mono high-resolution monitor is that they probably got a deal on the mono CRT assemblies from the manufacturer because mono and grayscale were end-of-life for the workstation vendors who had previously been buying them... Hence why even the pinout is identical. (It'd also mean Atari could have prototyped the TT using readily-available Sun displays, without having to wait for their own to be ready.) Anyone with both a working Sun ECL monitor and an Atari TT want to check how they work together? :)
</pre></blockquote><pre wrap="">That would make sense. A bit like how the Vectrex came to be because of a huge pile of surplus vector displays.
Walter.
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</pre>
</div>
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style="margin:30px 25px 10px 25px;"><div
style="width:100%;border-top:2px solid
rgba(146,154,163,0.7);padding-top:10px;"> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:49%;">
<a style="color:#485664
!important;padding-right:6px;font-weight:500;text-decoration:none
!important;" href="mailto:rescue@sunhelp.org" moz-do-not-send="true">Chris
Hanson via rescue</a></div> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:48%;text-align:
right;"> <font color="#909AA4"><span style="padding-left:6px">September
13, 2023 at 10:01 PM</span></font></div> </div></div>
<div xmlns="http://www.w3.org/1999/xhtml" class="__pbConvBody"
__pbrmquotes="true"
style="color:#909AA4;margin-left:24px;margin-right:24px;"><div>I believe
the manual for the TTM194 has the pinouts for both ends of its cable,
I'll see if I took a pic of the page(s) if you can't find a copy online,
otherwise I can probably dig it out this weekend.<br><br>I'm almost
certain that I saw the DE9 input on the TTM194 was identical to the DE9
input on the Sun ECL displays (and I'm assuming the Sun cabling is
straight-through), so it makes sense that the TenoxVGA would work for a
Sun-2 as well.<br><br>It's unclear (to me) what you mean by "a sort of
vague raster," are you getting an image that's just too far over, or
something else? If you connect directly to a CRT or reasonable multisync
panel (eg NEC 1990SX), do you get a reasonable image? It could just be
that some fine-tuning is needed, perhaps even just with the Extron. It
could be that it's detecting the overall resolution correctly, but maybe
the specifics of the timing are slightly different between Sun's ECL
and RGB implementations, e.g. different size front/back porch, and
that's confusing it.<br><br>Incidentally, my conspiracy theory about why
Atari chose ECL for the mono high-resolution monitor is that they
probably got a deal on the mono CRT assemblies from the manufacturer
because mono and grayscale were end-of-life for the workstation vendors
who had previously been buying them... Hence why even the pinout is
identical. (It'd also mean Atari could have prototyped the TT using
readily-available Sun displays, without having to wait for their own to
be ready.) Anyone with both a working Sun ECL monitor and an Atari TT
want to check how they work together? :)<br><br> -- Chris<br><br><br>_______________________________________________<br>rescue
list - <a class="moz-txt-link-freetext" href="http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org">http://sunhelp.org/mailman/listinfo/rescue_sunhelp.org</a><br></div>
</div>
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style="margin:30px 25px 10px 25px;"><div
style="width:100%;border-top:2px solid
rgba(146,154,163,0.7);padding-top:10px;"> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:49%;">
<a style="color:#485664
!important;padding-right:6px;font-weight:500;text-decoration:none
!important;" href="mailto:rescue@sunhelp.org" moz-do-not-send="true">Walter
Belgers via rescue</a></div> <div
style="display:inline-block;white-space:nowrap;vertical-align:middle;width:48%;text-align:
right;"> <font color="#909AA4"><span style="padding-left:6px">September
13, 2023 at 1:53 PM</span></font></div> </div></div>
<div xmlns="http://www.w3.org/1999/xhtml" class="__pbConvBody"
__pbrmquotes="true"
style="color:#909AA4;margin-left:24px;margin-right:24px;"><meta
http-equiv="Content-Type" content="text/html; charset=utf-8">Hi,<div
class=""><br class=""></div><div class="">I have a few Sun2's and only
one working ECL monitor (that needs recapping). Another ECL monitor does
not work and I am not knowledgeable enough to fix it.</div><div
class=""><br class=""></div><div class="">So I looked into Antoni
Sawicki's <a href="https://github.com/tenox7/tenoxvga" class=""
moz-do-not-send="true">TenoxVGA project</a>. I had 10 PCB's made (as 1
is not really cost effective - what is left I will sell via Tindie).
But, it has a DB15 input connector that's used on the Atari TT instead
of a DB9 connector as used on the Sun2.</div><div class=""><br class=""></div><div
class="">I dig a lot of digging and there's not much information. It
took some time to get the schematic from the TenoxVGA and it doesn's say
what pin is what, but to an extend that can be deduced from looking at
the schematic. My guess:</div><div class=""><br class=""></div><div
class="">Sun DB9</div><div class="">1 +ECL</div><div class="">6 -ECL</div><div
class="">5 GND</div><div class="">3 HSYNC</div><div class="">4 VSYNC</div><div
class="">8 SYNC return</div><div class=""><br class=""></div><div
class="">DB15 TT (input on TenoxVGA)</div><div class="">4 +ECL</div><div
class="">9 -ELC (goes to GND via resistor)</div><div class="">5 GND</div><div
class="">10 GND</div><div class="">15 SYNC return (goes to Vcc and GND
both with resistors)</div><div class="">HSYNC 13</div><div class="">VSYNC
14</div><div class=""><br class=""></div><div class="">DB15 VGA (output
on TenoxVGA)</div><div class="">1, 2, 3 RGB (hooked up to +ECL)</div><div
class="">5, 10 GND</div><div class="">6, 7, 8 GND (RGB return)</div><div
class="">13 HSYNC</div><div class="">14 VSYNC</div><div class=""><br
class=""></div><div class="">I made a DB9<->DB15 cable, crossed my
fingers and hooked it all up. The is an image! So a) the PCBs work b)
the sync signals are coming through.</div><div class="">But, the image
show a sort of vague raster in the background. There's a bright vertical
line at the beginning of the scan lines (the image is too far to the
right). I am using an Extron RGB-HDMI 300A to get a 'clean' VGA signal I
should add. (That detects the correct resolution coming in.)</div><div
class=""><br class=""></div><div class="">Does anybody have experience
using the TenoxVGA on a Sun2 and can confirm the pinout?</div><div
class=""><br class=""></div><div class="">Walter.</div><div class=""><br
class=""></div>
<br><fieldset class="mimeAttachmentHeader"></fieldset><br><div>_______________________________________________<br>rescue
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</blockquote>
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