On Tue, 25 May 2010 16:38:32 -0400, David Andrews wrote: >On Tue, 2010-05-25 at 16:10 -0400, Tom Marchant wrote: >> The 68000 and its successors are big endian. >> They switched to PowerPC in 1994 and to i86 in 2006. > >Didn't PPC go both ways? (I vaguely remember a talk by David Barnes a >few years ago, where he mentioned the OS/2 PPC port making use of the >mixed-endian-ness of PPC.)
Apparently so. My comment (68000 and its successors) was in response to Ted's statement that the Motorola processors were little endian. I was referring to the Motorola designed 68000, 68010, 68020, 68030, 68040 and 68060, not the IBM designed PPC, which was also manufactured by Motorola. The 680x0 series had an architecture that is rather similar to the 370/XA, but without bimodal support. A major difference is that eight of the registers were address registers and the other eight were data registers. -- Tom Marchant ---------------------------------------------------------------------- For IBM-MAIN subscribe / signoff / archive access instructions, send email to lists...@bama.ua.edu with the message: GET IBM-MAIN INFO Search the archives at http://bama.ua.edu/archives/ibm-main.html
