Wanted: 68040!

[delshay]

alexh wrote:
If you can find an MC68040RC40A with a mask of L88M then it will run almost cold at 40MHz (compared to the original ones which could melt diamond at 25MHz)

The history of the 68040:(backed up with Motorola / Freescale data)
In 1989 it went into production as the XC68040RCxxyy originally a 0.8um masks (D43B, D50D, D98D, E31F) part. These run exceptionally hot even at 25MHz and need heatsinks all the time.
In 1995 the 68040 qualified to mc status. It was shrunk to a 0.65um mask (E42k) these parts run hot at 25MHz but dont need heatsinks, famous in MAC circles for overclocking. There are some XC 0.65um parts from 1992-95 with the mask E26A but I am unsure as to their heat dissapation or overclockability.
In 2000 the 68040 was shrunk to a 0.57um mask (K63H) these run a lot cooler that all previous parts and again do not need heatsinks at 25MHz+.
Finally in 2002 the last MC68040RCxxA mask was made (L88M) production was moved back to MOS11 FAB, again at 0.57um, with increased reliability (which should favour overclocking even more).

there also the MC68040V which is 3.3v i dont know how hot it run.

[delshay]

MC68040V should work on most 040 board you just have to add a regulator ( if needed ).

but you can get 3.3v from a modern power supply,some of you already have this.

[delshay]

adolescent wrote:

delshay wrote:
MC68040V should work on most 040 board you just have to add a regulator ( if needed ).

No.  The 68040V pin-out is different too.

MC68040V was fitted to a Blizzard PPC this is a test processor only & will remain so but will play no part in my final projects.

it was used only when the Blizzard PPC was converted from 040 to 060 where socket was fitted & voltage changed was done & a MC68040V was fitted to check everything was ok.
 
it has a different pin count but as far as im am aware i did not find a problems & ran ok at 3.3v settings on the Blizzard PPC board.


a full test will now be done to see if its compatible with the Blizzard PPC but will check docs first.


will post here with results in a few days.

[delshay]

@adolescent

being look at the docs on the MC68040V pinout.

it seems you are right i bought the card off EBAY with the above processor did not pay attension to v marking on the processor at first,just plug it into my A1200 when i recive it.

even when i changed the processor for another 040 processor the card still did not work and it suppose to be working.

ok im not going to have a go at the person who sold me the card because i found the fault & the card is working fine.

i wiil be going over docs in fine detail,did not think to go over the docs.


thanks Del

[delshay]

this device allows MC68040V to be plug into a 040 socket along with a MC68060.

http://www.emulation.com/catalog/off-the-shelf_solutions/production-test_adapters/upgrade_motorola/

just to add the MC68040V did boot fine on a Blizzard PPC with no problems im still looking at the docs.

i will try and findout if the above device needs to be config between 040V & 060.

[delshay]

vk3heg wrote:
@ Thread:

Can I have my thread back please!

I've received a couple of offers, just waiting to sort things out now.

you can have your thread back soon.

[delshay]

adolescent wrote:
@delshay

Interesting.  Maybe 040V is compatible with 060 pins then (and 3.3V) but not old 040 only socket?   The extra pins are to control the speed changes of the processor, but there are also a couple missing/changed signals according to the docs.  (Again, maybe these are also missing/changed on the 060.)

thanks again as i overlooked the pinout of the processor,im still looking if there could be a problem with this type of processor.

[delshay]

to find the answers to the MC68040V this thread will have to stay open.

[delshay]

click on processor then MC68040V

http://www.amiga-hardware.com/

[delshay]

iv check the processor again its marked MC68040V in white so whats inside i dont know but it does work at 3.3v with 040 settings on the Blizzard PPC.

i also like to add here that my Blizzard PPC has set a *new* top end benchmark for classic amigas.

68k set with 83.66Mhz osc ( new speed record ) BETA
603e set with 75Mhz osc ( new speed record ) BETA

note theres still problems that needs fixing.