RGB to VGA

tonyyeb · 15 October 2008, 23:46

This any good:

http://cgi.ebay.co.uk/New-15Khz-RGB-...d=p3286.c0.m14

rkauer · 16 October 2008, 00:41

Sounds good.

But all units I saw in this very box are not PAL-compatible. Maybe it is a new model (I hope).

alexh · 16 October 2008, 01:06

FYI it's a Cypress CM-397

They are PAL compatible (288p/576i @ 50Hz) but they automatically scan rate convert to VGA @ 60Hz (to be compatible with more LCD panels) the side effect is the loss of smooth scrolling.

They are only 16-bit too.

rkauer · 16 October 2008, 04:23

@Alexh: are you sure? I saw those units for sell in Japan for NTSC only?!?

Fingerlickin_B · 16 October 2008, 04:34

They sell them in Australia through a local distributor & store, so presumably they do support PAL.

Price tag for them over here is outrageous though, over $250!

PZ.

alexh · 16 October 2008, 10:38

Quote:

Originally Posted by rkauer

@Alexh: are you sure?

100%

Quote:

Originally Posted by eBay

Input Timings:
576i: Horizontal 15KHz Vertical 50Hz/Interlace

chiark · 16 October 2008, 10:47

Shame they upcovert to 60Hz... Would there be any way around that?

alexh · 16 October 2008, 12:54

Take it apart, wire in an I2C master, change the default values.

chiark · 17 October 2008, 09:25

You make it sound so easy: in reality, how difficult would that be? How could one identify what value to change

15 October 2008, 23:46	#1
tonyyeb Has the Amiga bug again Join Date: Oct 2007 Location: Hull, UK Age: 43 Posts: 791	RGB to VGA This any good: http://cgi.ebay.co.uk/New-15Khz-RGB-...d=p3286.c0.m14

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16 October 2008, 00:41	#2
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Sounds good. But all units I saw in this very box are not PAL-compatible. Maybe it is a new model (I hope).

16 October 2008, 01:06	#3
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,354	FYI it's a Cypress CM-397 They are PAL compatible (288p/576i @ 50Hz) but they automatically scan rate convert to VGA @ 60Hz (to be compatible with more LCD panels) the side effect is the loss of smooth scrolling. They are only 16-bit too.

16 October 2008, 04:23	#4
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	@Alexh: are you sure? I saw those units for sell in Japan for NTSC only?!?

16 October 2008, 04:34	#5
Fingerlickin_B Amiga Nut Join Date: Oct 2006 Location: Belco, Australia Posts: 2,242	They sell them in Australia through a local distributor & store, so presumably they do support PAL. Price tag for them over here is outrageous though, over $250! PZ.

16 October 2008, 10:47	#7
chiark Needs a life Join Date: Jan 2008 Location: England Posts: 1,707	Shame they upcovert to 60Hz... Would there be any way around that?

16 October 2008, 12:54	#8
alexh Thalion Webshrine Join Date: Jan 2004 Location: Oxford Posts: 14,354	Take it apart, wire in an I2C master, change the default values.

17 October 2008, 09:25	#9
chiark Needs a life Join Date: Jan 2008 Location: England Posts: 1,707	You make it sound so easy: in reality, how difficult would that be? How could one identify what value to change

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