🚀 go-pugleaf

> 
> 
> Can anyone help with this question:
> 
> I'm thinking of buying a 10Mhz AT clone.  Lots of expansion cards on the
> market have a phrase in their advertisements like "works on 6Mz or 8Mhz AT
> compatibles".  Are they leaving off the "10Mhz" just because such 
> machines are not very common?  It would seem that if the system bus is
> truly asynchronous any expansion card (memory card, video card, disk
> controller card, etc.) could be used. Thanks.
> 
> 					
> 
> USENET:	...!{pur_ee,ihnp4,convex}!uiucdcs!schmitz
> CSNET:	schmitz%uiuc@csnet
> ARPA:	schmitz@a.cs.uiuc.edu

Some of the better high speed clones run expansion cards at a lower rate than
the system clock. This prevents the speed incompatibility headaches. Check the
PC Limited line of AT clones at 10 & 12 Mhz (They even have one at 16Mhz but
I am wary of this one as it must use preselected chips at above rated speeds).

                               Jeff Denenberg
                               ..!decvax!ittvax!jeffd

In article <5100136@uiucdcsb> schmitz@uiucdcsb.cs.uiuc.edu writes:
>
>
>Can anyone help with this question:
>
>I'm thinking of buying a 10Mhz AT clone.  Lots of expansion cards on the
>market have a phrase in their advertisements like "works on 6Mz or 8Mhz AT
>compatibles".  Are they leaving off the "10Mhz" just because such 
> ...

IBM sells two AT types.  One is 6 Mhz, including the I/O channel, the other
is 8 Mhz, including the I/O channel.  Many of the "10 MHz AT clones" run the
processor at 10 MHz and the I/O channel at 6 MHz -- to be compatible with IBM.
What the expansion board would see would be 6 MHz in that case.

Of course, the expansion board companies may just not be willing to step up
to the 10MHz speed, given that *IBM* hasn't come out with anything faster
than 8 MHz.