ptw@encore.UUCP (P. Tucker Withington) (02/12/85)
Here's another one of my "Whatever happened to...":
A while back there was talk that the XT/370 is based on a chip that IBM got
Motorola to make for them that was basically a 68000 with "new microcode".
I guess I can believe this, but are there any technical papers out there that
either confirm or "tell the whole story"?
o.o --tucker
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...{allegra,decvax,ihnp4,linus}!encore!ptwjosh@v1.UUCP (Josh Knight) (02/14/85)
> A while back there was talk that the XT/370 is based on a chip that IBM got > Motorola to make for them that was basically a 68000 with "new microcode". > I guess I can believe this, but are there any technical papers out there that > either confirm or "tell the whole story"? For confirmation (at least) try "System/370 Capability in a Desktop Computer" by F.T. Kozuh, D.L. Livingston, and T.C. Spillman, IBM Systems Journal, Volume 23, Number 3, pp. 245-254, 1984. Reprints of the article can be ordered from IBM branch offices using the reprint order number G321-5222 for $1.00 or copied for private use provided the copyright information is kept intact. The entire issue (on PC's AKA workstations) can be ordered from IBM branch offices using the reprint order number G321-0077 for $6.00. Josh Knight, IBM T.J. Watson Research josh at YKTVMX on BITNET, josh.yktvmx.ibm on CSnet, ...!philabs!v1!josh
german@uiucuxc.UUCP (02/18/85)
I am not sure what processors it has, but we do have about a 1/2 dozen PC/XT370s in our department. I think they have a total of 4 processors of one type or another. So yes there were made. Greg German
werner@aecom.UUCP (Craig Werner) (02/22/85)
> I am not sure what processors it has, but we do have about a 1/2 dozen > PC/XT370s in our department. I think they have a total of 4 processors > of one type or another. So yes there were made. > Greg German 1 8088 handling I/O and instruction fetching, etc. (Plain 8088, I believe) 1 8087 for all arithmetic support. 2 custom 68000s, each handling approx. 1/2 of the 370 instruction set. -- Craig Werner !philabs!aecom!werner What do you expect? Watermelons are out of season!