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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: TazzyUK on June 11, 2006, 12:23:16 PM

Title: 68080?
Post by: TazzyUK on June 11, 2006, 12:23:16 PM: Well i figured it would make a good feasible 'upgrade' number..lol
Title: Re: 68080?
Post by: Framiga on June 11, 2006, 12:29:44 PM: 68090 for me.... who offers more?
Title: Re: 68080?
Post by: on June 12, 2006, 12:06:37 AM: Quote

Framiga wrote:
68090 for me.... who offers more?

Athlon 64 X2 for me. :-D
Title: Re: 68080?
Post by: Plaz on June 12, 2006, 03:49:24 AM: The way Amiga luck runs, I figure 68666 about does it.

Plaz
Title: Re: 68080?
Post by: darksun9210 on June 12, 2006, 10:56:54 AM: 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:
Title: Re: 68080?
Post by: CLS2086 on June 12, 2006, 11:15:51 AM: that's the 68070 in the CDi
Title: Re: 68080?
Post by: darksun9210 on June 12, 2006, 11:26:21 AM: woopsy me. :-D
Title: Re: 68080?
Post by: DamageX on June 13, 2006, 06:01:56 AM: Quote
68000 - the first!
68010 - as above but with some onboard cache and some extra instructions

a 3-word instruction cache I believe
Quote

68020 - full 32bit architecture, seperate inst/data cache
68030 - 68020 with turbo chargers on steriods.

The 020 has only the instruction cache. The 030 has both (256 bytes each), and the internal MMU. No turbos or steroids I don't think
Title: Re: 68080?
Post by: darksun9210 on June 13, 2006, 12:27:03 PM: the 020 doesn't have seperate data/inst caches? hmm, ok noted.
i knew the 030 had an internal MMU, but i thought on the cache side of things it just doubled up on the amount of cache compaired to the 020.

given that the 030 can happily clock to 50Mhz (test samples have been clocked higher), and the 020 clocks out at 33Mhz. thats a bit of a turbo boost over an 020 given the relativly similar base architecture...?
Title: Re: 68080?
Post by: CLS2086 on June 13, 2006, 01:17:12 PM: @darksun9210 : you could find the answer on the freescale web site :lol:

The 68030 seems to me as the best 68k Turbo processors for old amiga games and apps without any tricks.
Title: Re: 68080?
Post by: Roondar on June 13, 2006, 01:29:54 PM: It was always my understanding that Motorola had a lifetime plan for the MC68K series and that plan ended at 68060.

Hence the 68070 from Philips and others.

I freely admit that might be wrong tho, it's just something I remember after all :-)
Title: Re: 68080?
Post by: SKAN on June 13, 2006, 01:45:32 PM: I'll go for the next-gen... 69000! :D