Trang Bow motherboard KB5TA-1 (2A59GT1AC) as found somewhere on the Price
Technology website some time ago
Layout (click image or choose save target as):
Trademark names are the property of their respective owners
This information is the result of "hunting and pecking" the jumpers on this board
to determine the bus speed and multiplier. They apply to the KBT5A-1 board. Both
the owner of the original page and me
would appreciate some feedback and info on this board.
One CTX-508 board is also reported with i430VX-2A59GT1AC-00
Definitions:
- A zero means jumper left (1-2) , a one means jumper right (2-3)
- I-133 is an Intel Pentium 133 processor (non MMX)
- C-686 is a Cyrix 6-86mx processor, pr200; actually runs at 75x2=150 MHz,
has MMX support per Cyrix
- C-MII is a Cyrix MII processor, 333gp; actually runs at 83x3=250 (roughly)
has MMX support per Cyrix
- A plus sign next to the speed represents " pr " meaning it's not actually
running at that speed but slower
- " nob " means No Boot
- JP10 open = 2.8V core JP10 closed is 3.3V core. For Pentium MMXs open JP10.
As you can see, Cyrix processors make good guinea pigs.
The raw data is provided first for your own reference. The diagram was made
up in Paint (sorry, I'm no artist) and is based on my conclusions from the information
obtained during the time spent on the bench. Processor voltage data will be
posted here (someday) when I get a chance to spend more time with this board.
Again, use this information at your own risk.
info@price-technology.com
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