Hi Nasta, >> I'm sorry, but I must destroy any hopes that Coldfire CPU's >> (version > 1) could execute our existing QL software. Not even >> the new announced ones with better 68k compatibility. Important >> instructions which behave different to 68k can not (generally) >> be identified or trapped out by a Coldfire CPU, in order to >> emulate them correctly. Absolutely not. > >I would very much appreciate if you could give us some more details on >this.
Two examples for CF V4e: - mov.b xxx,-(sp)' adjusts the stack pointer by -1 - lsl and lsr set the overflow bit to the same as the carry bit Both can not be forced to trap out. What a stupidity. No way code on the CF core can solve this in general. (Except emulating the whole 68k CPU, of course.) Bye, Peter
