Hi Hugh,
On Tuesday 17 January 2006 22:00, Hugh Gundersen wrote:
> On Tue, 17 Jan 2006 19:48:23 +0000, you wrote:
> >Hi Guys,
> >
> >Just to add / correct information given about my old "IBM XT".
> >
> >Model No: 5160
> >Manufactured in Scotland 1983
>
> Are you really certain of this date?
Thats what it says on the rating plate
> It could be a patent date I am sure the 286 was not available until
> 85/86
The patent date is 1981
> Nearly all had the 8086 which was apparently 2 x 8080(?) back to back
The difference was the width of the data bus.
> There was a 186 that was a bit of a flop but it could access 1 Mb and
> more RAM. This was grabbed by Research Machines and then they conned
> the GLC to put them into all London Schools because they looked like
> real computers.
As far as I remember the 80186 was produced as an embeded processor and
was an 8086 in a square package and not a DIL package.
> >4MHz 286 CPU
> >128Kb ram on board
> >2 30 pin dimm slots each supporting 256Kb
> >5.25" Single sided 160Kb floppy
> >Seagate ST506 HDD.
> >
> >Note the 5160 did not have a hard disk fitted originally. I
> > purchaced the ST506 separatly. It has a header for the tape
> > cassette recorder, which went to a slot bracket containg the audio
> > in and out sockets.
> >
> >
> >The other machine is an "IBM AT"
> >Model No: 5162
> >Manufactured in Scotland 1984
> >6MHz 286 CPU
> >Socket for 287 Co processor
> >128Kb ram on board
> >2 30 pin dimm slots each supporting 256Kb
> >5.25" Double sided 1200Kb floppy
> >Seagate ST510 HDD.
> >
> >Note this machine (5162) has been very heavily modified over the
> > years and currently sports a 43Mb 3.5" hard disk drive. It also
> > has the two floppy disk drives. A 1.2Mb 5.25" and a 1.4Mb 3.5"
> > one.
> >Amazingly it will also recognise and support an IDE CDrom on the
> > plug in interface card, along with any IDE hard disk that is in the
> > BIOS table. Unfortunatly that is a maximum of 128Mb, although if
> > you set a "Type 17" you can use an overlay to get to 504Mb.
> >
> >Just shows, the old grey stuff isn't infallable after all !!!
> >
> Sir Hugh of Bognor
--
Best Regards:
Derrick.
Pontefract Linux Users Group.
plug at play-net.co.uk
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