Programming Forums > Application Development > Assembly

vidmaster · Feb 24th, 2006, 6:11 AM

VESA is the Video Electronics Standards Association. They are industry-led body that agrees on all aspects of video standardisation from the resolution modes of computers, to the size and shape of monitors.

Implementations of VESA standards into video graphics chipsets form the Video BIOS Extensions or VBE. Drivers for such video cards are available for both Windows and Linux.

Its an interesting specification, and is in versiion 3 at present. Before the VESA standard, video card compatibility was a scary monster for programmers and users. Still though, slight deviations and re-interpretations of VBE cause a minor issues even today.

What I am trying to establish is a body of research on what video chipset implementations exhibit the anomaly I mentioned, namely the 832 pixel scan-width on an 800X600 resolution. Incidently the pixel height according to the anomally is 624 pixels instead of 600.

Apologies for the banter shown earlier in this thread. It turned out that the angry poster was getting increasingly detached from the thread topic and no amount of intelligent beckoning seemed suficient to reel him back. He has been reported for his behaviour.

grumpy · Feb 24th, 2006, 7:08 AM

vidmaster, Dawei had a valid point.

Downloading an executable from an unknown or untrusted source is an incredibly dangerous thing to do. At the least, it is a very good way to mess up an operating system because that executable may be a virus or trojan horse. And you asked people to do exactly that. Face it: this forum provides no means of validating either your identify or the claims you make about what the executable file does. Because of that anyone who deliberately downloaded your executable would, unfortunately, be a fool and anyone who deliberately executed it would be a damned fool. This forum also provides no means of guaranteeing that your executable matches your source code in any way.

vidmaster · Feb 24th, 2006, 12:37 PM

I fully accept that, especially since you present the argument in a reasonable and intelligent way.

The exe is for convenience, but the source is pretty straight-forward. What are your experiences with video mode programming?

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Feb 24th, 2006, 6:11 AM	#11
vidmaster Newbie Join Date: Feb 2006 Posts: 8 Rep Power: 0	VESA is the Video Electronics Standards Association. They are industry-led body that agrees on all aspects of video standardisation from the resolution modes of computers, to the size and shape of monitors. Implementations of VESA standards into video graphics chipsets form the Video BIOS Extensions or VBE. Drivers for such video cards are available for both Windows and Linux. Its an interesting specification, and is in versiion 3 at present. Before the VESA standard, video card compatibility was a scary monster for programmers and users. Still though, slight deviations and re-interpretations of VBE cause a minor issues even today. What I am trying to establish is a body of research on what video chipset implementations exhibit the anomaly I mentioned, namely the 832 pixel scan-width on an 800X600 resolution. Incidently the pixel height according to the anomally is 624 pixels instead of 600. Apologies for the banter shown earlier in this thread. It turned out that the angry poster was getting increasingly detached from the thread topic and no amount of intelligent beckoning seemed suficient to reel him back. He has been reported for his behaviour.

Feb 24th, 2006, 7:08 AM	#12
grumpy Programming Guru Join Date: Jun 2005 Location: Adelaide, South Australia Posts: 1,207 Rep Power: 5	vidmaster, Dawei had a valid point. Downloading an executable from an unknown or untrusted source is an incredibly dangerous thing to do. At the least, it is a very good way to mess up an operating system because that executable may be a virus or trojan horse. And you asked people to do exactly that. Face it: this forum provides no means of validating either your identify or the claims you make about what the executable file does. Because of that anyone who deliberately downloaded your executable would, unfortunately, be a fool and anyone who deliberately executed it would be a damned fool. This forum also provides no means of guaranteeing that your executable matches your source code in any way.

Feb 24th, 2006, 12:37 PM	#13
vidmaster Newbie Join Date: Feb 2006 Posts: 8 Rep Power: 0	I fully accept that, especially since you present the argument in a reasonable and intelligent way. The exe is for convenience, but the source is pretty straight-forward. What are your experiences with video mode programming?

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Programming Forums > Application Development > Assembly

VESA Video question