Original cache controller/TRAM/SRAM

[Kiru Sengal]

Hello,

I am trying to find out which IBM-PC/Intel-CPU combination had the
first on-board cache. Was it the IBM PC AT 286 or the IBM PC AT 386?
If someone knows the details of the cache controller/TRAM/SRAM used on
the motherboard (like part numbers, write policy, read architecture),
that would be nice to know too.

Thank you

[Martin Whittaker]

"Kiru Sengal" <kiru.sengal@gmail.com> wrote in message
news:1113538819.453753.225660@f14g2000cwb.googlegroups.com... Hello, I am trying to find out which IBM-PC/Intel-CPU combination had the first on-board cache. Was it the IBM PC AT 286 or the IBM PC AT 386? If someone knows the details of the cache controller/TRAM/SRAM used on the motherboard (like part numbers, write policy, read architecture), that would be nice to know too. Thank you

I think I've got some mobo's back to that era, maybe even a SIPP memory
mobo' somewhere. I'll see if I can locate any of them.

Martin

[LJ]

The first one I'm aware of was my 486DX2-66
circa 1992. The 386's still had external math
coprocessors.




"Martin Whittaker" <mxwyhzittaker@kcx.ryrz.com> wrote in message
news:%LP7e.17286$Nn.8876@tornado.rdc-kc.rr.com... "Kiru Sengal" <kiru.sengal@gmail.com> wrote in message news:1113538819.453753.225660@f14g2000cwb.googlegroups.com... Hello, I am trying to find out which IBM-PC/Intel-CPU combination had the first on-board cache. Was it the IBM PC AT 286 or the IBM PC AT 386? If someone knows the details of the cache controller/TRAM/SRAM used on the motherboard (like part numbers, write policy, read architecture), that would be nice to know too. Thank you I think I've got some mobo's back to that era, maybe even a SIPP memory mobo' somewhere. I'll see if I can locate any of them. Martin

[Charles Howse]

Previously Kiru Sengal <kiru.sengal@gmail.com> wrote: Hello,
I am trying to find out which IBM-PC/Intel-CPU combination had the first on-board cache. Was it the IBM PC AT 286 or the IBM PC AT 386? If someone knows the details of the cache controller/TRAM/SRAM used on the motherboard (like part numbers, write policy, read architecture), that would be nice to know too.

The 286 had no cache whatsoever. Some 386 had external caches
on the mainboard. Controllers and strategies differed from
chipset to chipset. The first on-die cache was in the 486
generation of chips.

Arno

[Martin Whittaker]

"Martin Whittaker" <mxwyhzittaker@kcx.ryrz.com> wrote in message
news:%LP7e.17286$Nn.8876@tornado.rdc-kc.rr.com... "Kiru Sengal" <kiru.sengal@gmail.com> wrote in message news:1113538819.453753.225660@f14g2000cwb.googlegroups.com... Hello, I am trying to find out which IBM-PC/Intel-CPU combination had the first on-board cache. Was it the IBM PC AT 286 or the IBM PC AT 386? If someone knows the details of the cache controller/TRAM/SRAM used on the motherboard (like part numbers, write policy, read architecture), that would be nice to know too. Thank you I think I've got some mobo's back to that era, maybe even a SIPP memory mobo' somewhere. I'll see if I can locate any of them. Martin

I found the SIPP mobo' - but there's no cache on it. I thought I had an
early 386sx board too, with cache on it, but cannot locate that one.

For info about IBM products: http://www.can.ibm.com/helpware/vintage.html
is a good site.

Martin