not sure whats going on with this thread, but anyway...
Motorola reserved the even numbers of 680x0 for major chip architecture revisions, and the odd numbers of 680x0 for minor upgrades/updates.
68000 - the first!
68010 - as above but with some onboard cache and some extra instructions
68020 - full 32bit architecture, seperate inst/data cache
68030 - 68020 with turbo chargers on steriods.
68040 - massive achitecture revamp, >4x the power of the 030 at the same clock speed
68050 - ditched due to not enough of an increase over the 040, plus the 060 was due for release
68060 - achitecture revision - branch prediction unit, branch cache, multiple execution units, general modernisation, etc... more than 2x the power of an 040 at the same clock speed.
interestingly philips licensed the 68000 from motorola and built their own. but called it the 68060, and stuck it in their CDi.
anyway, whats this 68080 thing all about then? :lol:
