68K peripheral devices have a DTACK* output that signals acknowledgement of the bus cycle to the CPU - this is how the asynchronous bus functions in the 68k family.
As an example, the Motorola syntax is move.l xxx and the MIT syntax is movel xxx.
Motorola Internet ftp and WWW sites: http://www.motserv.indirect.com or http://design-net.com http://www.mot.com ftp://freeware.aus.sps.mot.com (Motorola BBS) ftp://pirs.aus.sps.mot.com (AESOP and DR. BUB) There are many links between each of these sites.