A500 68000 16mhz?

[TomJ]

Has anyone ever tried putting a 16mhz 68000 processor in an A500?

I'm wondering if I try this will there be any overheating issues?

I expect if I do some games won't run correctly, but other programs might run faster?

Before I try this I'm looking for any input on the subject!

[tone007]

You can put the processor in, it'll still run at 7mhz due to the crystal.

To get it to run faster (I believe there's a 14mhz hack,) it's a little more work than just swapping the parts I believe.

[T3000]

If you can find a SupraTurbo'28, that would be the way to go.

[ElPolloDiabl]

There's no point because the ram is still accessed at 7.14Mhz. It will give you a speed boost of only 5%.

If you can speed up your fast RAM too you will get a real speed boost.

[KThunder]

iirc there is a 28mhz line from denise? that is halved to provide a 14mhz clock to a 16mhz 68000.
there is some incompatibility with the floppy especially but some programs have problems as well.

some polygon type programs speed up a little, as well as some cpu bound programs but other than that its not worth it. lha would speed up some.

there was a mod that synced the clocks so a switch could flip between 7.16 and 14 I don't know haw well it did though. Without it flipping frequencies would freeze the machine.

The 68000 has a lot of "dead" time on the bus, time where it's not doing anything, during multiplies or any other long instruction. This would reduce that, the memory would keep up as well as with any '020 or '030 accelerator

[Tenacious]

I made that accelerator hack years ago.  It is unreliable, unstable, and uncompatible.  AdSpeed is only a small improvement, compatibility-wise.

Simply swapping in a 68010 (still 7 Mhz) is a better option than above.

The Supra Turbo28 is excellent and the best 16-bit accelerator.  I use one in an A2000 and one in an A500.  These show up on eBay for modest prices.

[XDelusion]

Where can I get such 68010's anyhow? I'd like to pop one in my 600 until I can find a deal on a 030.

[KThunder]

Where can I get such 68010's anyhow? I'd like to pop one in my 600 until I can find a deal on a 030.

you can't just "pop" one into your 600 since your 68000 is a surface mount chip. 1000's 2000's and 500's have the socketed 68000. The 600 accelerators I have seen have a cap like thing that goes on top the 68000 and disables it.

The 68010 speeds up loops because it has what amounts to a loop cache on the chip. depending on the software this can speed up code up to 10% from what I've heard. That is quite a bit more that the 14mhz hack and is completely compatible with all but the very oldest software.

[TomJ]

Well i put it in the 500.
 
all my games seem to run normal no problems found yet.
shadow of the beast
menace
world circuit grand prix
lotus II
 
 
put pagestream in and the cursor kept up with my although i'm not the fastest  typer
found a copy of sculpt 4d on a hard drive that works without asking the password, but I have to boot with 1.3 -- 3.1 it asks for the password???
that runs
 
I think fanscale had it right there is no real noticeable difference
 
It does seem to load programs a bit faster, but i haven't timed it yet.
 
thanks for the input!

[Buzzfuzz]

Ha ha, the everlasting issue of updating the A500/A600.
 
I'm not even going to begin on it.
I'm just waiting for Amiga-Digital to finish his prototype 030 A500, if that works you won't need any turbocard for it anymore and you won't need ram expansions either, because both will be availble.
If the board also can be outfitted with modern SATA and DDR ram, then it would be mindblowingly good, I guess nothing would top that, not even the X1000 or Natami.

[B00tDisk]

Ha ha, the everlasting issue of updating the A500/A600.
 
I'm not even going to begin on it.
I'm just waiting for Amiga-Digital to finish his prototype 030 A500, if that works you won't need any turbocard for it anymore and you won't need ram expansions either, because both will be availble.
If the board also can be outfitted with modern SATA and DDR ram, then it would be mindblowingly good, I guess nothing would top that, not even the X1000 or Natami.

More info, please?

[tone007]

Well i put it in the 500.

Guess what, it's still running at 7mhz!

A benchmark should show no improvement.

[Amiga_Nut]

Well i put it in the 500.
 
all my games seem to run normal no problems found yet.
shadow of the beast
menace
world circuit grand prix
lotus II
 
 
put pagestream in and the cursor kept up with my although i'm not the fastest  typer
found a copy of sculpt 4d on a hard drive that works without asking the password, but I have to boot with 1.3 -- 3.1 it asks for the password???
that runs
 
I think fanscale had it right there is no real noticeable difference
 
It does seem to load programs a bit faster, but i haven't timed it yet.
 
thanks for the input!

Because of the way the Amiga games are using custom chips there is no point using an accelerator for things like 2D blitter/copper intensive games. Even if it is a dedicated clock doubling card that replaces the 68000 in the socket with extra logic to sync it into the system bus speed it will have no real effect other than possibly causing it to guru.

Also try them on something like Starglider II or F1GP where the speed of the game is down to the CPU. Slow arcade games due to inefficient use of the copper/blitter will show zero improvement unless they are pure software routines ie ST ports.

I had a 68010 in my A1000 decades ago, made sod all difference on 3D games. Waste of time and not worth the crashing, just get an 020 or 030 piggyback card if you prefer some internal solution. But make sure the card has dedicated 32bit Fast ram on it otherwise it's a waste of money.

[Metalguy66]

Besides.. Its scarileige. If it can't be done with a stock 68000, it doesnt need to be done on an A500.. Leave it alone..

Do some worthwhile upgrades like:
2megs chipram
ECS denise,
REAL FASTRAM.. (get rid of any ram thats in the trap door, that isnt CHIP ram)

A 68010 will not cause any compatability/stability problems, as long as you dont go jacking with the clock-speed. Leave it at the stock 7.14mhz and it will work fine.. Theres really a negligable-to-zero performance advantage, but hey.. If you've got one floating around, theres no harm in dropping it in..

[tone007]

One of the benefits of dropping in a 68010 is WHDLoad's quit keys will work, which is not the case on a 68000.  Obviously if your system isn't beefy enough to run WHDLoad, this doesn't help you much, but with a couple MB of Fastram and a HD, even a 500 can do alot with WHDLoad.