Welcome, Guest. Please login or register.

Author Topic: NTSC DCTV work on PAL Amiga?  (Read 6087 times)

Description:

0 Members and 1 Guest are viewing this topic.

Offline desiv

  • Hero Member
  • *****
  • Join Date: Oct 2009
  • Posts: 1270
    • Show all replies
Re: NTSC DCTV work on PAL Amiga?
« on: July 30, 2011, 05:31:53 PM »
Quote from: Motormouth;652234
1 meg of chip is more than plenty for image viewing.  I used a DCTV with my A500 with 1 meg chip for years without any problems.

I got a DCTV for my A1000 recently after seeing clusteruk's vid on his A1000 with a DCTV, displaying PICs and VIDs.

So, my guess is, if you are an end-user just wanting to disply things (or maybe some basic conversion / rendering), even 512k CHIP will be OK..

Quote from: Motormouth;652234
I do agree a second monitor is nice to have with the DCTV or RGB/composite button on a A1084 works well.

That was something that confused me when I got my DCTV.  I thought it was broken.  :)  I couldn't see any DCTV images on my monitor normally.
(I didn't get any manuals with it, and I still haven't found any scanned ones online)

THEN I found out that it outputs DCTV images via it's composite output, not RGB.  So, I couldn't do some of those things without a second monitor or RGB/composite switch on the 1084...

Luckily I was able to acquire a DCTV RGB converter not too long ago, so I can see that flower pic in 24bit color.  ;-)

I haven't tried any digitizing on my DCTV / A1000 yet as I still haven't made my parallel port adapter.  (The A1000 parallel port is wired a bit different.. I didn't know that before I got my 1000...)

desiv

p.s.  I had a HAM-E for my Amiga 500 (512k CHIP) back in the day, but it was RGB only (well, it might have worked with a GENLOCK???  Never tried).
Amiga 1200 w/ ACA1230/28 - 4G CF, MAS Player, ext floppy, and 1084S.
Amiga 500 w/ 2M CHIP and 8M FAST RAM, DCTV, AEHD floppy, and 1084S.
Amiga 1000 w/ 4M FAST RAM, DUAL CF hard drives, external floppy.
 

Offline desiv

  • Hero Member
  • *****
  • Join Date: Oct 2009
  • Posts: 1270
    • Show all replies
Re: NTSC DCTV work on PAL Amiga?
« Reply #1 on: July 30, 2011, 07:48:42 PM »
Quote from: Motormouth;652251
All my Amigas are NTSC and my DCTV is NTSC, but my guess and this is only a guess, is the difference between and NTSC and PAL DCTV is probably on the Digitizing end, as timing is important.
Unless you have the DCTV RGB converter as well, your DCTV image output will be coming from the composite output on the DCTV unit.
I would expect that they will be generating NTSC output from there..

It's possible they just pull the timing from what they see coming out of the Amiga, but I have my doubts..

Will be interesting to see what the results of the test are..

desiv
Amiga 1200 w/ ACA1230/28 - 4G CF, MAS Player, ext floppy, and 1084S.
Amiga 500 w/ 2M CHIP and 8M FAST RAM, DCTV, AEHD floppy, and 1084S.
Amiga 1000 w/ 4M FAST RAM, DUAL CF hard drives, external floppy.
 

Offline desiv

  • Hero Member
  • *****
  • Join Date: Oct 2009
  • Posts: 1270
    • Show all replies
Re: NTSC DCTV work on PAL Amiga?
« Reply #2 on: July 31, 2011, 01:12:26 AM »
Quote from: tasmanian guy;652287
Well I can confirm it works fine on a PAL Amiga in NTSC mode..
Just for clarification, you're using a PAL Amiga (1200??) running in NTSC mode with an NTSC DCTV and outputting DCTV images via the DCTV composite output to an NTSC device???

desiv
Amiga 1200 w/ ACA1230/28 - 4G CF, MAS Player, ext floppy, and 1084S.
Amiga 500 w/ 2M CHIP and 8M FAST RAM, DCTV, AEHD floppy, and 1084S.
Amiga 1000 w/ 4M FAST RAM, DUAL CF hard drives, external floppy.
 

Offline desiv

  • Hero Member
  • *****
  • Join Date: Oct 2009
  • Posts: 1270
    • Show all replies
Re: NTSC DCTV work on PAL Amiga?
« Reply #3 on: July 31, 2011, 05:27:55 PM »
Quote from: tasmanian guy;652356
A PAL Amiga 1200 with a NTSC DCTV outputing it to a LCD Australian TV via the DCTV composite output.

Nice..  
I know my LCD TVs don't do either PAL/NTSC, but just NTSC here.  If that TV does NTSC, then your're doing true NTSC all the way from your PAL 1200 in NTSC mode out.

Man, I wish more of our LCD's did both modes or we had SCART here.. :(

Oh well..  Nice!

Would be interesting to see what the PAL software (It's different? I only have NTSC.) does on the 1200 in it's native PAL mode.
My guess is that the DCTV has PAL or NTSC crystals, which is why they sold them separately.  But if it pulls it's timing from the Amiga connected, it could be just the SW...

desiv
Amiga 1200 w/ ACA1230/28 - 4G CF, MAS Player, ext floppy, and 1084S.
Amiga 500 w/ 2M CHIP and 8M FAST RAM, DCTV, AEHD floppy, and 1084S.
Amiga 1000 w/ 4M FAST RAM, DUAL CF hard drives, external floppy.