30 pin dimm slots, and 286 on XT - must be a 'later' system lucky you.. I remember the continual addition of chipsets in bulk to an add-in board to get to 256
and the scraped hands from inserting the boards with all the protruding pin ends on the back JimB. ----- Original Message ----- From: "Gaffer" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Tuesday, January 17, 2006 7:48 PM Subject: Re: Brief History of IBM PCs (WAS RE: Mobo caps - again!) > Hi Guys, > > Just to add / correct information given about my old "IBM XT". > > Model No: 5160 > Manufactured in Scotland 1983 > 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 !!! > > -- > Best Regards: > Derrick. > Pontefract Linux Users Group. > plug at play-net.co.uk > > -- > ---------------------------------------- > The WIN-HOME mailing list is powered by L-Soft's renowned > LISTSERV(R) list management software. For more information, go to: > http://www.lsoft.com/LISTSERV-powered.html > > -- ---------------------------------------- The WIN-HOME mailing list is powered by L-Soft's renowned LISTSERV(R) list management software. For more information, go to: http://www.lsoft.com/LISTSERV-powered.html
