The NEW Build Your Own Arcade Controls

Main => Monitor/Video Forum => Topic started by: me on June 03, 2002, 11:38:38 pm

Title: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS????
Post by: me on June 03, 2002, 11:38:38 pm

okay this is very important question...this arcade guy i know has CGA TO VGA CONVERTORs for $89.99..he claims it will convert the cga signal to use on windows..

is it possible? ??? ???i am trying to get a 33" cabinet with arcade monitor and must use windows.....

i cant afford a SCAN CONVERTER since they are like $500...

anybody with good knowlege on monitors....please help :-[

thanks for reading and posting any helpfull info...

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: JMDickson on June 04, 2002, 09:18:23 am

 A CGA to VGA converter basically converts 15khz video to 31khz.  Typically they are called line-doublers, and are a type of scan converter.  These can be used to display video from an arcade board on a VGA monitor.
 You are trying to go the other way (VGA to CGA).

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: me on June 04, 2002, 10:55:12 am

okay thing are getting CLEAR...

now...is there such thing called VGA TO CGA CONVERTER?? ???

as you said it was the other way around...thanks for all the help.... :o

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: JMDickson on June 04, 2002, 11:59:56 am

 Yeah, it's called a scan converter  :-/  You can find them in a wide range of prices and quality.  You need something that has RGB output to interface with the monitor.

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: hyiu on June 04, 2002, 01:11:19 pm

try the following link...

http://www.avtoolbox.com/video-to-vga.htm

they have upscan and downscan converter...
I have not used it myself.... but found that site when I was looking around... maybe you can get more info on it...

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: me on June 04, 2002, 04:59:47 pm

hey thanks everyone...

HENRY..thanks for the link...and also WHAT IT EGA monitor by way if anyone know..this machine i am trying to buy..the guy has no idea what monitor is it..but its running capcom vs snk for now.....SO WHAT EXACTLY IS EGA...sorry for me being kinda stupied but really want to get this 33" show case cabinet....DREAM ;)

THANKS FOR ALL THE INFOS

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: JMDickson on June 05, 2002, 07:41:12 am

 In the 'computer world' CGA and EGA are digital video specs with 4-bit color color depth (16 colors max).
 In arcade machines, these specs are analog, so the number of colors is determined by the board.

 Now that we have the difference out of the way...
 CGA refers to a monitor that can handle a 15.75 khz scan rate (~15,750 lines drawn per second minus a few for the beam to return to the top corner of the screen).  This gives 200 to 250 lines of resolution at 60 FPS.  Also called Standard resolution.

 EGA refers to a monitor that can handle a 24.8khz scan rate (~24,800 lines per second). This gives about 384 to 400 lines of resolution. Also called Medium resolution.

 VGA monitors can hande 31.5 khz (31,500 lines per second), giving 480 to 512 lines of resolution.

Capcom vs SNK has a CGA monitor I believe.

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: me on June 05, 2002, 01:24:43 pm

hey thanks for the reply.. ;)

by the way...from what you know...whats the cheapest scan converter i could get that will make the CGA monitor to display windows..i am willing to pay like 200$, thats about it...or i install i 32" tv with s-video..since CGA aint all that great from what i am thinking...anyways thanks again ;D

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: JMDickson on June 07, 2002, 09:55:01 am

Here is a unit for $140 that may be a little overkill on features
http://www.avtoolbox.com/avt-3160.htm
I have heard good things about their other products, but I don't know about the quality of this.

There are other choices, A few of the TView and AVerKey units designed for PC to TV can do it also with varying quality. You are basically looking for a scan converter with RGB out.

Title: Re: could someone EXPLAIN>>CGA TO VGA CONVERTOR IS
Post by: me on June 07, 2002, 10:04:43 am

jmdickson, ;D

thanks for for looking out for me man....thanks again..for gettting a link to the right product...but i had another simple little question..since dreamcast VGA box outputs 640x480,this box should handle the dreamcast rgiht? ???.....i wanted to use both pc and dreamcast...so please reply...and also i did not understand somethin...whats the maximum resolution i could go upto in windows...any idea :-[...thanks again ;D ;D