Get On The Vintage Computer Bus
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Maxwell Z. Rubin
Apr 19, 2013, 8:50:05 AM4/19/13
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Article Title: Get On The Vintage Computer Bus
Author: Maxwell Z. Rubin
Word Count: 546
Article URL: http://www.isnare.com/?aid=102312&ca=Computers+and+Technology
Format: 64cpl
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Vintage Computer Add-in cards come in three basic flavors: 8-bit, 16-bit and 32-bit. These terms refer to the number of data bits the card sends out at one time. Ideally a 16-bit video card sends an image to the monitor in half the time it would take for an 8-bit version. It is important to know what kind of card your vintage computer accepts. The older PCs and XTs usually have an 8-bit or PC bus, which accepts the older PC bus, which accepts only the 8-bit cards. Vintage computers which are of more recent vintage use a PCI bus combined with ISA (Industry Standard Architecture).
The ISA bus was basically the original AT vintage computer bus. This expansion bus originated with the IBM PC at an 8-bit bandwidth. IBM improved on the design with the PC/AT raising the bandwidth to the 16-bit standard.
In addition to the ISA bus, there is typically an auxiliary bus such as the VL-bus or the even more recent and now accepted standard the PCI bus both were designed for video cards so that they could operate at faster speeds. The PCI bus as we know went on to become the industry standard all purpose bus. Another bus called EISA was going to become the industry standard but instead went on to have a life almost exclusively in the server realm.
What was the basis of the development of the PCI bus? When the Pentium chip was released Intel saw the need for a more general purpose local bus that would eventually supplant the ISA/EISA and VL-bus designs completely. So Intel invented the Personal Computer Interconnect bus now more commonly without the comprehension of the historical background � the PCI bus.
An important point to remember is that the EISA is backward compatible with 8-bit cards (8 bit cards fit into EISAand EISA slots) but MCA will not work with either of the other two standards. (Backward compatible means that the device works with all previous hardware technology, but will not necessarily work with newer configuration standards). In other words cards for an EISA bus computer the cards from an ISA bus computer will work in the EISA vintage computer. However if you try to use these cards in a newer IBM you are out of luck if you want to use your older cards.
Many video cards manufactured later were available in AT-ISA, PCI and VL bus. What would be considered newer more recent vintage computers were equipped with either a couple of VL slots and / or some PCI slots? If the vintage computer supports PCI bus this is a wise choice for performance and should be utilized if at all possible.
Vintage computer add-in cards can also be described in terms of length � � length, � length and full size cards. This along with less common XT height refers to the physical size of the cards. However the terms were rather arbitrary and there were no actual industry standards.
Basically what happened over the next time period for vintage computers there was a mixture of both the ISA and PCI buses on vintage computer motherboards until at some point the ISA standard eventually disappeared from view.
About The Author: Maxwell Z. Rubin http://www.adgerlinux.com Adger Linux Ubuntu Beginner Online Help Center Badger Linux Distro Beginner Ubuntu Badger Linux Resource Center Online http://www.badgerlinux.net/
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Message delivered directly to members of the group:
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*****************************************************************
Please consider this free-reprint article written by:
Maxwell Z. Rubin
*****************************
IMPORTANT - Publication/Reprint Terms
- You have permission to publish this article electronically in free-only publications such as a website or an ezine as long as the bylines are included.
- You are not allowed to use this article for commercial purposes. The article should only be reprinted in a publicly accessible website and not in a members-only commercial site.
- You are not allowed to post/reprint this article in any sites/publications that contains or supports hate, violence, porn and warez or any indecent and illegal sites/publications.
- You are not allowed to use this article in UCE (Unsolicited Commercial Email) or SPAM. This article MUST be distributed in an opt-in email list only.
- If you distribute this article in an ezine or newsletter, we ask that you send a copy of the newsletter or ezine that contains the article to http://www.isnare.com/eta.php?aid=102312
- If you post this article in a website/forum/blog, ALL links MUST be set to hyperlinks and we ask that you send a copy of the URL where the article is posted to http://www.isnare.com/eta.php?aid=102312
- We request that you ask permission from the author if you want to publish this article in print.
The role of iSnare.com is only to distribute this article as part of its Article Distribution feature ( http://www.isnare.com/distribution.php ). iSnare.com does NOT own this article, please respect the author's copyright and this publication/reprint terms. If you do not agree to any of these terms, please do not reprint or publish this article.
*****************************
Article Title: Get On The Vintage Computer Bus
Author: Maxwell Z. Rubin
Word Count: 546
Article URL: http://www.isnare.com/?aid=102312&ca=Computers+and+Technology
Format: 64cpl
Contact The Author: http://www.isnare.com/eta.php?aid=102312
Easy Publish Tool: http://www.isnare.com/html.php?aid=102312
*********************** ARTICLE START ***********************
Vintage Computer Add-in cards come in three basic flavors: 8-bit, 16-bit and 32-bit. These terms refer to the number of data bits the card sends out at one time. Ideally a 16-bit video card sends an image to the monitor in half the time it would take for an 8-bit version. It is important to know what kind of card your vintage computer accepts. The older PCs and XTs usually have an 8-bit or PC bus, which accepts the older PC bus, which accepts only the 8-bit cards. Vintage computers which are of more recent vintage use a PCI bus combined with ISA (Industry Standard Architecture).
The ISA bus was basically the original AT vintage computer bus. This expansion bus originated with the IBM PC at an 8-bit bandwidth. IBM improved on the design with the PC/AT raising the bandwidth to the 16-bit standard.
In addition to the ISA bus, there is typically an auxiliary bus such as the VL-bus or the even more recent and now accepted standard the PCI bus both were designed for video cards so that they could operate at faster speeds. The PCI bus as we know went on to become the industry standard all purpose bus. Another bus called EISA was going to become the industry standard but instead went on to have a life almost exclusively in the server realm.
What was the basis of the development of the PCI bus? When the Pentium chip was released Intel saw the need for a more general purpose local bus that would eventually supplant the ISA/EISA and VL-bus designs completely. So Intel invented the Personal Computer Interconnect bus now more commonly without the comprehension of the historical background � the PCI bus.
An important point to remember is that the EISA is backward compatible with 8-bit cards (8 bit cards fit into EISAand EISA slots) but MCA will not work with either of the other two standards. (Backward compatible means that the device works with all previous hardware technology, but will not necessarily work with newer configuration standards). In other words cards for an EISA bus computer the cards from an ISA bus computer will work in the EISA vintage computer. However if you try to use these cards in a newer IBM you are out of luck if you want to use your older cards.
Many video cards manufactured later were available in AT-ISA, PCI and VL bus. What would be considered newer more recent vintage computers were equipped with either a couple of VL slots and / or some PCI slots? If the vintage computer supports PCI bus this is a wise choice for performance and should be utilized if at all possible.
Vintage computer add-in cards can also be described in terms of length � � length, � length and full size cards. This along with less common XT height refers to the physical size of the cards. However the terms were rather arbitrary and there were no actual industry standards.
Basically what happened over the next time period for vintage computers there was a mixture of both the ISA and PCI buses on vintage computer motherboards until at some point the ISA standard eventually disappeared from view.
About The Author: Maxwell Z. Rubin http://www.adgerlinux.com Adger Linux Ubuntu Beginner Online Help Center Badger Linux Distro Beginner Ubuntu Badger Linux Resource Center Online http://www.badgerlinux.net/
Please use the HTML version of this article at:
http://www.isnare.com/html.php?aid=102312
*********************** ARTICLE END ***********************
- To distribute your articles go to http://www.isnare.com/distribution.php
- For more free-reprint articles go to http://www.isnare.com
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