Winbond W83977 TF vs EF (was: New to list)

[Mike Westfall]

Richard Smith wrote:
> ron minnich wrote:
> 
>>> The serial ports (and other stuff) are handled by a Winbond W83977TF 
>>> chip, which I suppose is connected to the PIIX4E's ISA bus...
> 
> 
>> the 83977ef is supported already.
>>
> 
> What's the diff between a TF and EF?
> 


Looking at the data sheets...

    - The TF suppports 13 IRQs, the EF only 12.

    - The TF has
         "23 programmable general purpose I/O ports; 3 dedicate, 20 
optional", while
      the EF has only
         "14 programmable general purpose I/O ports; 6 dedicate, 8 
optional".

Oh, and the TF is compliant wih the Microsoft PC97 Hardware Design Guide;
the EF with the PC98 version of same. Big Deal.

Other than that, they look identical.

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Mike Westfall          Software/Systems Engineer,
Phone: 505.665.5256    NIS-4, Space Instrumentation and Systems Engineering,
Email: mikew at lanl.gov  Nonproliferation and International Security Division.
Snail: Mailstop D448, PO Box 1663, Los Alamos National Laboratory, NM 87545
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