Fairlight-CMI

I've almost finished restoring a Fairlight CPU Card for the Series IIx. The only thing that still 
needs to happen is burning the EPROMS.

I've got an EPROM burner but it doesn't support 2716 or 2516 type EPROMS, only 27C16.

The service manual says that a 2716 or 2516 eprom needs to be used.
Can anyone tell me if it's also possible to use the 27C16 as a replacement?

Best,
David

Hi David, 

In general you should be able to replace a 2716 with a 27C16. It does depend 
somewhat on the circuits and bus configuration as the logic thresholds, 
access time and fanout might be a little different in the CMOS EPROM. It is 
likely the CMOS part will draw less current that the NMOS part does. 

Regards, 

Tristan 

dvdborn writes: 

> I've almost finished restoring a Fairlight CPU Card for the Series IIx. The only thing that still 
> needs to happen is burning the EPROMS. 
> 
> I've got an EPROM burner but it doesn't support 2716 or 2516 type EPROMS, only 27C16. 
> 
> The service manual says that a 2716 or 2516 eprom needs to be used.
> Can anyone tell me if it's also possible to use the 27C16 as a replacement? 
> 
> Best,
> David 
> 
>  
>

Hello David,

MMe in my Q133 I use of the 2716 (because I have some much in  
advance)...

Normally both type of memory 2716 and 27C16 are compatible pin has  
pin...

see :

http://www.datasheetcatalog.net/datasheets_pdf/2/7/C/1/27C16.shtml
and
http://www.datasheetcatalog.com/datasheets_pdf/D/2/7/1/D2716.shtml

JB

Le 21 févr. 08 à 17:11, dvdborn a écrit :

> I've almost finished restoring a Fairlight CPU Card for the Series  
> IIx. The only thing that still
> needs to happen is burning the EPROMS.
>
> I've got an EPROM burner but it doesn't support 2716 or 2516 type  
> EPROMS, only 27C16.
>
> The service manual says that a 2716 or 2516 eprom needs to be used.
> Can anyone tell me if it's also possible to use the 27C16 as a  
> replacement?
>
> Best,
> David
>
>
>

I think that's right too, different voltage for
burning and more sensitive to static (maybe get same
access time range is all?) but functionally the same
once burned.

glenn

--- Jean-Bernard EMOND <jbemond@free.fr> wrote:

> Hello David,
> 
> MMe in my Q133 I use of the 2716 (because I have
> some much in  
> advance)...
> 
> Normally both type of memory 2716 and 27C16 are
> compatible pin has  
> pin...
> 
> see :
> 
>
http://www.datasheetcatalog.net/datasheets_pdf/2/7/C/1/27C16.shtml
> and
>
http://www.datasheetcatalog.com/datasheets_pdf/D/2/7/1/D2716.shtml

> 
> JB
> 
> Le 21 févr. 08 à 17:11, dvdborn a écrit :
> 
> > I've almost finished restoring a Fairlight CPU
> Card for the Series  
> > IIx. The only thing that still
> > needs to happen is burning the EPROMS.
> >
> > I've got an EPROM burner but it doesn't support
> 2716 or 2516 type  
> > EPROMS, only 27C16.
> >
> > The service manual says that a 2716 or 2516 eprom
> needs to be used.
> > Can anyone tell me if it's also possible to use
> the 27C16 as a  
> > replacement?
> >
> > Best,
> > David
> >
> >
> > 
> 
>

Hi All,

Thanks for the replies regarding the EPROMs.
The 27C16's are burned and I'm going to try out the restored CPU Card tomorrow.

David

--- In Fairlight-CMI@yahoogroups.com, Glenn <glenn234@...> wrote:

>
> I think that's right too, different voltage for
> burning and more sensitive to static (maybe get same
> access time range is all?) but functionally the same
> once burned.
> 
> glenn
>