5 Dec
2012
5 Dec
'12
12:15 a.m.
Are these any good?
http://www.ebay.com/itm/Video-converter-to-replace-Amiga-1200-2000-RGB-moni…
I was searching ebay for Amiga 2000 and came across it, seems cheap enough if it works
ok.
5 Dec
5 Dec
12:30 a.m.
We use them a lot in Brazil, they works :)
But you can spare it if you can find a Samsung 510N, 710N, 910N, 910T or
LG M1721A or M1921A
All of them are compatible with 15KHz horizontal sync. I use a M1721A in
my A2000 with no circuit whatsoever.
Just remember:
- In the M1721A/M1921A you MUST connect composite sync to horizontal
sync input (and no vertical sync)
- In the Samsung monitors, you MUST connect hsync to hsync and vsync to
vsync. If you see interference on screen, cut vsync
And it works :o)
---
Enviado do meu Motorola PT550
Meu site: http://www.tabalabs.com.br
----- Original Message -----
From: "TeoZ" <teoz at neo.rr.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Wednesday, December 05, 2012 6:15 AM
Subject: CGA/EGA/YUV to VGA converters
Are these any good?
http://www.ebay.com/itm/Video-converter-to-replace-Amiga-1200-2000-RGB-moni…
I was searching ebay for Amiga 2000 and came across it, seems cheap enough
if it works ok.
5:04 a.m.
On Wed, 5 Dec 2012, TeoZ wrote:
Are these any good?
http://www.ebay.com/itm/Video-converter-to-replace-Amiga-1200-2000-RGB-moni…
I was searching ebay for Amiga 2000 and came across it, seems cheap
enough if it works ok.
I have one of those here and it works fine on Amiga modes with 15 KHz
horizontal scan rates. Don't expect it to understand some of the oddball
ones, though. YMMV on interlaced output. The only converter I've seen
that does a consistently good job on interlaced modes is the CYP CM-3455
SCART <--> VGA unit (which is also one of the few that yields good results
on an Apple IIgs).
--
10:42 a.m.
-----Original Message-----
I have one of those here and it works fine on Amiga modes with 15 KHz
horizontal scan rates. Don't expect it to understand some of the oddball
ones, though. YMMV on interlaced output. The only converter I've seen that
does a consistently good job on interlaced modes is the CYP CM-3455 SCART
<--> VGA unit (which is also one of the few that yields good results on an
Apple IIgs).
--
I did a search for the CM-3455 scart converter. Not a lot came up. As I
don't have an Apple IIgs monitor (is it wrong to be using a commodore
monitor on composite on my apple?), I would be nice to have a VGA/LCD
monitor for it. Where did you find it?
Even better if it works with some of my other old junk (CGA/MDA PC's).
Cheers, Joe
6:27 p.m.
On Wed, 5 Dec 2012, Joe wrote:
I did a search for the CM-3455 scart converter. Not a
lot came up. As I
don't have an Apple IIgs monitor (is it wrong to be using a commodore
monitor on composite on my apple?), I would be nice to have a VGA/LCD
monitor for it. Where did you find it?
They come up on eBay from time to time. These folks have them new:
http://www.converters.tv/products/pal_to_vga/100.html
It looks like it's been superceded by another unit, which I have no
experience with.
Even better if it works with some of my other old junk
(CGA/MDA PC's).
The SCART connector accepts RGB or composite signals. So, CGA yes, MDA
probably not.
--
6 Dec
6 Dec
2:13 a.m.
It (should) work with MDA, but remember the output is digital, so you have to configure
the input on the device...
Enviado pelo meu telemovel
Em 06/12/2012, ?s 00:27, Steven Hirsch <snhirsch at gmail.com> escreveu:
On Wed, 5 Dec 2012, Joe wrote:
I did a search for the CM-3455 scart converter.
Not a lot came up. As I
don't have an Apple IIgs monitor (is it wrong to be using a commodore
monitor on composite on my apple?), I would be nice to have a VGA/LCD
monitor for it. Where did you find it?
They come up on eBay from time to time. These folks have them new:
http://www.converters.tv/products/pal_to_vga/100.html
It looks like it's been superceded by another unit, which I have no experience with.
Even better if it works with some of my other old
junk (CGA/MDA PC's).
The SCART connector accepts RGB or composite signals. So, CGA yes, MDA probably not.
--
5 Dec
5 Dec
7:39 p.m.
On 12/5/2012 3:15 AM, TeoZ wrote:
Are these any good?
http://www.ebay.com/itm/Video-converter-to-replace-Amiga-1200-2000-RGB-moni…
I was searching ebay for Amiga 2000 and came across it, seems cheap enough if it works
ok.
If I don't have this exact same thing, I have one very similar from
ebay. Despite messing around with it for quite some time, I wasn't able
to find any mode/setting/configuration that would be compatible with the
output from my A500.
It was somewhat disappointing.
Keith
6 Dec
6 Dec
5:05 a.m.
On Wed, 5 Dec 2012, Keith Monahan wrote:
On 12/5/2012 3:15 AM, TeoZ wrote:
Keith,
I think I know what your issue may have been. Those units went through a
bunch of production changes. Some can handle separated H + V sync and
some require composite. Thinking back to when I had mine connected to the
Amiga, I did have to put together a small circuit to combine H + V.
See:
http://www.epanorama.net/circuits/vga2rgbs.html
Worked like a champ.
--
Are these any good?
http://www.ebay.com/itm/Video-converter-to-replace-Amiga-1200-2000-RGB-moni…
I was searching ebay for Amiga 2000 and came across it, seems cheap enough
if it works ok.
If I don't have this exact same thing, I have one very similar from ebay.
Despite messing around with it for quite some time, I wasn't able to find any
mode/setting/configuration that would be compatible with the output from my
A500.
12:49 p.m.
Why combine H+V if you have composite sync? Did you burned your hybrid
circuit inside the amiga?!
---
Enviado do meu Motorola PT550
Meu site: http://www.tabalabs.com.br
----- Original Message -----
From: "Steven Hirsch" <snhirsch at gmail.com>
To: "General Discussion: On-Topic and Off-Topic Posts"
<cctalk at classiccmp.org>
Sent: Thursday, December 06, 2012 11:05 AM
Subject: Re: CGA/EGA/YUV to VGA converters
On Wed, 5 Dec 2012, Keith Monahan wrote:
On 12/5/2012 3:15 AM, TeoZ wrote:
Keith,
I think I know what your issue may have been. Those units went through a
bunch of production changes. Some can handle separated H + V sync and
some require composite. Thinking back to when I had mine connected to the
Amiga, I did have to put together a small circuit to combine H + V.
See:
http://www.epanorama.net/circuits/vga2rgbs.html
Worked like a champ.
--
Are these any good?
http://www.ebay.com/itm/Video-converter-to-replace-Amiga-1200-2000-RGB-moni…
I was searching ebay for Amiga 2000 and came across it, seems cheap
enough if it works ok.
If I don't have this exact same thing, I have one very similar from ebay.
Despite messing around with it for quite some time, I wasn't able to find
any mode/setting/configuration that would be compatible with the output
from my A500.
10:37 p.m.
On 12/6/2012 3:49 PM, Alexandre Souza - Listas wrote:
Why combine H+V if you have composite sync? Did you burned your
hybrid circuit inside the amiga?!
Are you talking about pin 10 on the DB23? I'm asking myself the same
damn question.
Maybe because the db23 to db9 monitor cable I'm using.... they didn't
bring out composite sync. But surely I would have realized that I could
get a db23 and .......duh.
Maybe I didn't see the forest for the trees.....
Or maybe I probed pin 10 and there was nothing on it.............I don't
remember.
Thanks,
Keith
7 Dec
7 Dec
5:11 a.m.
On Fri, 7 Dec 2012, Keith Monahan wrote:
On 12/6/2012 3:49 PM, Alexandre Souza - Listas wrote:
I think I've lost too many brain cells in the intervening time. I pieced
the whole thing back together in my head and realized that I built the
sync combiner to interface my Tandy CoCo 3 (which definitely does not
have composite sync available on its RGB connector) with the video
converter.
I still think I remember running the Amiga through the converter, but take
that with a grain of salt. This has got my curiousity aroused, though.
I some time off coming up and will try that exercise again.
Steve
--
Why combine H+V if you have composite sync? Did you burned your
hybrid circuit inside the amiga?!
Are you talking about pin 10 on the DB23? I'm asking myself the same damn
question.
Maybe because the db23 to db9 monitor cable I'm using.... they didn't bring
out composite sync. But surely I would have realized that I could get a db23
and .......duh.
Maybe I didn't see the forest for the trees.....
Or maybe I probed pin 10 and there was nothing on it.............I don't
remember.
8:41 a.m.
On 12/7/2012 8:11 AM, Steven Hirsch wrote:
I still think I remember running the Amiga through the
converter, but
take that with a grain of salt. This has got my curiousity aroused,
though. I some time off coming up and will try that exercise again.
Let me know what you come up. Maybe I'll order some DB23 connectors and
play around some more too.
Thanks,
Keith
6 Dec
6 Dec
10:25 p.m.
On 12/6/2012 8:05 AM, Steven Hirsch wrote:
I think I know what your issue may have been. Those
units went through
a bunch of production changes. Some can handle separated H + V sync and
some require composite.
Thinking back to when I had mine connected to
the Amiga, I did have to put together a small circuit to combine H + V.
You know, I'm pretty sure that I attempted to build the same circuit
because of exactly this reason. Something didn't work, and because I was
not convinced this was the solution anyways, abandoned the idea and
troubleshooting of the circuit.
See:
http://www.epanorama.net/circuits/vga2rgbs.html
Worked like a champ.
I'm pretty sure that was where I got the schematic originally.
Maybe I'll revisit.
For what it's worth, I think the lack of an easy solution caused me to
roll my own denise-attached video scan converter in an fpga..... that
mostly works now but still isn't finished.
Thanks,
Keith
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fast79ta＠yahoo.com -
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