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Main => Main Forum => Topic started by: Elkor on October 19, 2002, 10:32:59 am

Title: Monitor question (technical)
Post by: Elkor on October 19, 2002, 10:32:59 am

I have a 28" hantarex mtc9000 out of an old operation thunderbolt game.  as this was a shooter, the monitor was originally mounted horizontally and viewed with a mirror.  I plan on mounting the monitor for direct viewing but can't figure out how to correct the video signal  (it displays reversed)

I know this shouldn't be hard, can anyone help?

please?!?!???

-C

Title: Re:Monitor question (technical)
Post by: Thenasty on October 19, 2002, 11:14:06 am

What do you mean it displays reversed ? Do you mean the original game Operation Thunderbolt ? You trying to view it direct, or you trying to do with MAME ?

Title: Re:Monitor question (technical)
Post by: Elkor on October 19, 2002, 11:52:14 am

Originally, the monitor was mounted horizontally and viewed with a mirror.

Because of this, it was configured to display everything reversed (so that to the player the text would be legible).

Now, I have the monitor mounted vertically (direct-view, no mirror) and I have to figure out how to un-reverse the video signal.

Yes, I'm using mame (advmame); but this is definately a monitor hardware-thing (I have a streetfighterII board here, when plugged in that displays reversed as well)

If possible, I would like to make the monitor display correctly.

I know that advmenu has a "mirror" option, but I cannot find a similar setting for advmame, so while I can get the frontend to display properly, any games launched are 'reversed'.


once again, I would be gratefull for any help (at all!)

-C

Title: Re:Monitor question (technical)
Post by: Elkor on October 19, 2002, 01:02:41 pm

Got it working!

one of the guys from the advancemame-users list helped me out.
thanks anyway nasty!

-C

Title: Re:Monitor question (technical)
Post by: rampy on October 19, 2002, 11:32:28 pm

Quote from: Elkor on October 19, 2002, 01:02:41 pm

Got it working!

one of the guys from the advancemame-users list helped me out.
thanks anyway nasty!

-C

for historical purposes, and curiousity, and the odd chance some one else will have this problem in the future... what was the solution?

rampy

Title: Re:Monitor question (technical)
Post by: MameFan on October 20, 2002, 12:35:01 am

Sounds like you needed to just swap the yoke wires around.

Red+Blue,  Green+Yellow


Flip them both(red on blue, blue on red, green on yellow, yellow on green) and you essentially rotate the monitor 180 degrees.  

If you're only experiencing a "mirror" image, then you just swap one of the 2, depending on the axis it's mirrored.

Red/Blue = Horizontal (widest measurement of screen)
Green/Yellow = Vertical (shortest measurement of screen)

Title: Re:Monitor question (technical)
Post by: Elkor on October 20, 2002, 01:53:46 am

yup, just switch the pairs around as needed.    I needed to swap both pairs

Title: Re:Monitor question (technical)
Post by: SirPoonga on October 20, 2002, 02:58:36 am

same thing with those 19" Eygos that were on ebay (I have one).