◾NSC 8477 Was: New takes on XT-IDE, a new FDC, and a new CM/S GAL

Ali cctalk at ibm51xx.net
Thu Dec 20 00:40:45 CST 2018

>No, the CCIV initially had a plain-jane Intel rev 0 82077AA in a 68 pin
>PLCC.  After Intel "improved" the chip to the 82077AA-1, FM ceased to
>work.  Fortunately, as I mentioned NSC 8477 is a plug-in replacement,
>with the exception of not needing an extra external cap (the pin is NC
>on the National chip).


I read through the thread at VCF and see that the 8473 is not drop-in swappable with the 8477. One more question on the 8477 do you know if there is a significant difference between the 8477AV and the 8477BV revision? Thanks.


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