Atari ST to Commodore 1084s monitor

[klx300r]

Originally Posted by Anemos

@klx300r
No,is not so simple like Amiga,for internal CF or HD just forget for now..
The easy way is old system Megafile external SCSI HD, and the best solution is the Ultra-SatanDisk (using SD memory as HD and connected on Atari ACSI port),
but we wait for this ,Jookie guy is very near to finish this staff! if you want you can pre-order this item in to> http://mikro.umpc.sk/us_order/
also you can look there all interesting photos

nah..i'll keep the 1040STe stock and just add 3 more 1 mB cards to bump it up to 4 Mb's....that kinda money for the UltraSatan drive I ONLY spend on my Amiga's
say is it possible to hookup the STe to a dtandard SVGA monitor..or would you need some type of scandoubler for it

[papa_november]

Building a DIN plug entirely from scratch is pretty bad-ass.

[Jope]

Originally Posted by PWLM

I think the 'S' indicated stereo output, there was a 1084 which had mono I believe (please corect me if I'm wrong).

1084 = mono, 0.42mm dot pitch
1084S = stereo, 0.42mm dot pitch
1085S = stereo, 0.52mm dot pitch

1084 was more expensive, 1085 was cheaper and a bit worse picture wise.

[Jakodemus]

Originally Posted by Jope

1084 = mono, 0.42mm dot pitch
1084S = stereo, 0.42mm dot pitch
1085S = stereo, 0.52mm dot pitch

1084 was more expensive, 1085 was cheaper and a bit worse picture wise.

What's the diffirence between 1084S and 1083S?

[coze]

Originally Posted by Jakodemus

What's the diffirence between 1084S and 1083S?

1083 if it's a typo and 1085 you're talking about, jope already said the difference ? (S just means Stereo)

edit : ok, there was indeed a 1083S in existence ...

[Anemos]

doh, i dont remember this type 1083S .. looks like 1084S D1-D2

[Andymiga]

Okay, I made a cable from an Atari 1040STfm to a Commodore 1084S-P monitor and the picture is crisp and crystal clear, I would say that it is indeed perfect
I used 120 ohm resistors for the R, G and B lines as is suggested everywhere.

My 1084S-P has the 6-pin round DIN input connector (and so does not have the CSYNC input pin). I connected both HSYNC and VSYNC and it works fine.

So far, the 1084S-P has an Amiga, C64 and Atari ST connected and the picture is perfect with all of them. (I'm in the process of making a special RetroBench(TM) thingy with all three of my favourite retro computers in it. )

[rkauer]

Nice! You can use the ST as a pedal while you are using the Amiga or the C64!

[klx300r]

Originally Posted by Andymiga

Okay, I made a cable from an Atari 1040STfm to a Commodore 1084S-P monitor and the picture is crisp and crystal clear, I would say that it is indeed perfect
I used 120 ohm resistors for the R, G and B lines as is suggested everywhere.

)

sounds good but can you get hi-res mode on the ST?

[Andymiga]

Originally Posted by klx300r

sounds good but can you get hi-res mode on the ST?

As far as I know, the hi-res mode is not possible with the 1084 monitor (hires/monochrome is something like 35 kHz which is too much for the 1084 to handle.)

I haven't tried it, though --- the cable would need to be different, too, see here:
http://www.hardwarebook.info/Atari_ST_Monitor_Connector

Cheers,
Andy

[kovacm]

hi,

I just try to connect my STe to Commodore 1084s (d-sub 9 pin version) but I got quite distorted colors. Take a look at screenshot. GEM looks ok (but green is not corect green!) and games have distorted colors (red and blue are very week and everything is greenish).

I put 100 ohm resistors on RGB line and 70ohm on composite sync.

Does anybody have any idea what could be problem ?

btw monitor work perfectly with Amiga 500.

[Anemos]

Hello to Serbia,
Try again to test connections .. i upload the schematic again (in first post is
missed)
Folow my shematic, dont use the 70ohm resistor on Csync, 100ohm on RGB,s is ok,(check again the wires, looks like missed the red color..)
This cable working fine on both my machines STE 1040, and STF 1040.

[kovacm]

thanx Anemos!

I also post at http://www.atari-forum.com/viewtopic...15324&start=25

I did not manage to get RED - I suspect that my monitor have problem with connector.

Anyway, I use composite signal from STe - it is blurred in compare to RGB + Sync but for games it will be enought.

Now I need to buy second monitor for Amiga 500

Sorry to dig up this old thread, but I'm trying to build a EGA cable for my Atari ST to a Commodore 2002 monitor. I'm fairly certain that the 2002 is functionally equivalent to the 1084, but I cannot get any solid video.
My ST is a STf, without a RF modulator. I built the cable, but I don't have any 120 ohm resistors, so I used 100 ohm. How critical is the resistor value?

When I switch my monitor between modes, I can briefly see the green desktop with text on it, but then it wiggles out of existence and goes to a black screen.

What am I doing wrong?

Thanks,
Keith

[Anemos]

resitors on RGB is not important, is just for balancing brightness of colors.
what you mean "EGA cable" and must be know the pinouts of this monitor, dunno about Commodore 2002..

Originally Posted by Anemos

resitors on RGB is not important, is just for balancing brightness of colors.
what you mean "EGA cable" and must be know the pinouts of this monitor, dunno about Commodore 2002..

I built a cable just like yours, except I had 100 ohm resistors instead of 120 ohm resistors. The 2002 monitor is the same as a 1080. Same pinouts as your diagram.

[Anemos]

100 Ohm is ok, some notes:
my schematic showing the plugs of front side (not solder side).
check the (TTL/Analog button) if is in to Analog position.

Originally Posted by Anemos

100 Ohm is ok, some notes:
my schematic showing the plugs of front side (not solder side).
check the (TTL/Analog button) if is in to Analog position.

That is probably my problem then, I assumed it was from the solder side.

[Anemos]

follow the pins numbers of solder side, (numbers is the same but mirror)
and later check the connections by my schematic.

[retango]

Hi!
First of all thanks a lot Anemos for the tip!!
I tried the connection in post 1, and it did not work for me (I might have made some mistake when soldering the cables, so it may still work). However, I tried another connection, and it DID work!!! Atarti 1040 STF to Commodore 1084 S-D2 (with Female DB9 in the monitor). Instead of connecting Atari ST Pin 2 to DB9 Pin 7 (V+H sync composite), I connected Atari ST pin 9 to DB9 Pin 8 (H-Sync) , and Atari ST Pin 12 to DB9 Pin 9 (V-Sync).. And it worked!
In practice, instead of building a new cable (after my failed try), I used an Best Electronics Cable (http://www.best-electronics-ca.com/monadapt.htm) and built a DB15 to DB9 adaptor adaptor with these terminal breakout connectors:
* http://www.ebay.com/itm/DB9-D-SUB-VG...-/271840227837
* http://www.ebay.com/itm/DB15-VGA-mal...-/361270677705

I Connected
DB15 ----> DB9
Red (Pin 1) ----> Pin 3
Green (Pin 2) ----> Pin 4
Blue (Pin 3) ----> Pin 5
H Sync (Pin 13) ----> Pin 8
V Sync (Pin 14) ----> Pin 9
Ground ----> Pins 1,2, Ground

I did not use the resistors mentioned by Anemos, although maybe there are some in the Best Electronics cable..
Thanks again and good luck if anyone is trying this!