hharte
Member
Hi,
I have one fairly early serial number IBM 5150 PC in my collection, and it's in really nice shape. It came from a professor, and had stickers on most of the components in the machine with his name, phone number, and address. I guess back in '82 or so, these machines were fairly expensive and he didn't want it to grow legs. By those stickers, and since all of the components in the machine are genuine IBM, I'm pretty sure that the machine is all original.
The most interesting thing about it is that the CPU is marked I P8088-6 ES which I assume is an Intel 8088-6MHz, Engineering Sample. It also has a strange copper finned foil on the top of the package that looks hand-formed. What I'm unclear on is the 6MHz marking. As far as I know, Intel never produced a 6MHz part. All the other 8088's that I've seen are 8088-5 or 8088-8's, and I haven't seen any datasheets that mention the 6MHz part.
I'm curious if anyone has seen one of these before, or if they have heard of it. A close-up picture is on my web site at:
http://www.imsai8080.com/computers/IBM-XT/index.html
Thanks,
Howard
I have one fairly early serial number IBM 5150 PC in my collection, and it's in really nice shape. It came from a professor, and had stickers on most of the components in the machine with his name, phone number, and address. I guess back in '82 or so, these machines were fairly expensive and he didn't want it to grow legs. By those stickers, and since all of the components in the machine are genuine IBM, I'm pretty sure that the machine is all original.
The most interesting thing about it is that the CPU is marked I P8088-6 ES which I assume is an Intel 8088-6MHz, Engineering Sample. It also has a strange copper finned foil on the top of the package that looks hand-formed. What I'm unclear on is the 6MHz marking. As far as I know, Intel never produced a 6MHz part. All the other 8088's that I've seen are 8088-5 or 8088-8's, and I haven't seen any datasheets that mention the 6MHz part.
I'm curious if anyone has seen one of these before, or if they have heard of it. A close-up picture is on my web site at:
http://www.imsai8080.com/computers/IBM-XT/index.html
Thanks,
Howard