> On Mar 12, 2018, at 9:57 AM, Eric Smith via cctalk <cctalk@classiccmp.org> > wrote: > > On Mon, Mar 12, 2018 at 10:54 AM, emanuel stiebler via cctalk < > cctalk@classiccmp.org> wrote: > >> On 2018-03-12 15:49, Eric Smith via cctalk wrote: >>> As the most obvious example of the impedance mismatch between 370 >>> architecture and 68000 microarchitecture, the 68000 is hardwired to have >>> eight each data and address registers, not sixteen GPRs, and microcode >>> can't easily paper over that. >> >> I wouldn't bet on that ... >> > > I'm fairly sure of it, based on microarchitectural details in the US > patents on the 68000 design.
I think there was also an article in the IBM Systems Journal when the XT/370 was announced that basically described how this was done and how everything worked. TTFN - Guy
