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Horizontal 15hz monitor with vertical games?

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Lilwolf:
Anyone get any good results running vertical games in any 15hz or 25hz resolutions on a horizontal crt?  I have a multisync, so I can just force them to stretch to 31hz 640x480... but am interested to see if I'm missing a resolution that will work.

Thanks!

2600:
Whatever the AVGA does looks good to me.  I don't recall the resolutions off the top of my head, but here's the link.

http://ultimarc.com/avgainst.html

ahofle:
Yes they look way better at 15khz than stretched to VGA.  Just look at the game's resolution and pick a MAME resolution with the exact (or slightly more) number of horizontal lines.  For example, Pacman = 224x288, so use AVGA's 352x288 resolution.

Minwah:

--- Quote from: ahofle on December 06, 2007, 02:11:48 pm ---Yes they look way better at 15khz than stretched to VGA.  Just look at the game's resolution and pick a MAME resolution with the exact (or slightly more) number of horizontal lines.  For example, Pacman = 224x288, so use AVGA's 352x288 resolution.

--- End quote ---

I basically agree, but for me there are 2 serious issues with this:

1) if your monitor is adjusted for horizontal games (& doesn't have a memory for size/positions at different modes) then some of the 288 lines will be cut off (these lines often tend to be crucial for gameplay).  Of course you can shrink your size down, but then horizontal games look squashed.  Maybe this isn't an issue with a multisync, but for most fixed 15khz screens it probably is.

2) Some of the 288 line modes have odd refresh rates.  eg 352x288 @ 51Hz.  This can play havoc unless the game uses the same framerate (dropped frames, sound glitches etc).

For me these two reasons are enough to make me use 640x480 interlaced for most of these vertical games.

Lilwolf:
I'm trying to remove all interlaced modes right now.  I think they look really really bad.  I'm getting a decent and obvious flicker on the colors thats annoying.

I'll have to play with each resolution I don't like and cut them off soft15k and see if mame will then automatically use better settings.

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