Path: utzoo!utgpu!news-server.csri.toronto.edu!cs.utexas.edu!wuarchive!zaphod.mps.ohio-state.edu!samsung!caen!math.lsa.umich.edu!math.lsa.umich.edu!hyc From: hyc@math.lsa.umich.edu (Howard Chu) Newsgroups: comp.sys.atari.st Subject: Re: how about an upgrade to 68010 Message-ID: <1991Jan17.203526.15849@math.lsa.umich.edu> Date: 17 Jan 91 20:35:26 GMT References: <22662@well.sf.ca.us> Sender: usenet@math.lsa.umich.edu Organization: University of Michigan Math Dept., Ann Arbor Lines: 33 In article <22662@well.sf.ca.us> dsmall@well.sf.ca.us (David Small) writes: >I've plugged a 68010 into an ST and gotten it working (with the help of a Zax >in-circuit emulator). > > TOS 1.0, 1.2, and 1.4 do not recognize the larger stack frame >associated with the 68010,20,30,and 40. They also adopt space-saving >techniques >that make them 680x0 incompatible, such as stacking up an SR and a PC, >then doing an RTE-- which will probably bomb on a 68010. > > To bring up the 68010, we used a jumperboard with TOS 1.6 ROMS in it, >mapped at ^?$e0 0000 for 256K worth. The 68010 then worked nicely. (We did >have >to remove some ST-E specific stuff from the ROMs; it was trying to initialize >hardware we did not have in that ST!) > > From there, we went to the 68030. > > It's quite a project to get the 68010 up on the ST, and that chip >is pretty much obsolete anyway. The 030 is where the action is at. > > -- thanks, Dave / Gadgets Well, the 68010 is pretty much obsolete, but it at least *can* be a little faster than a 68000. Too bad there are no 16MHz 68010s. (Why is this, I wonder? Why fast 68000s but not 010s? Oh well.) From what you've said, can we infer then that creating a socket for a 68010 in an STe should be a completely trouble-free operation? (You realize, of course, that I'd give this up in a second if I could get that 68030 board.... }-) -- -- Howard Chu @ University of Michigan Flame all you want - we'll take more.