Will this fit in a standart A1200 case?

[gulliver]

I am thinking of building my own A1200 desktop project with my Blizzardppc 240mhz and 040 at 25mhz

I am just wandering if my blizzardppc which has a 040 with a heatsink and fan, will fit

Any help is apreciated

[alexh]

Yes but you will need to heavily mod the case with fans and holes & different heat-sinks to compensate for the extra heat of the 040 chip.

BuZz of Exotica has a Blizzard PPC + 040 in his desktop A1200.

http://eab.abime.net/showpost.php?p=436162&postcount=3

[alexh]

If you can find an MC68040RC25A with a mask of L88M that will work with no heatsink or fan. They were the last ones ever made and they run cool to touch even at 40MHz

http://www.freescale.com/files/share...cn/PCN8219.htm

They are not very common though.

[gulliver]

Thank you very much, that is really what I am looking forward to build, with a few extra mods of my own.

I am only intrigued by what he did for the cooling of the 040, on the downside of the A1200 case. There is no picture of that place.

[alexh]

Not 100% sure. You can always PM him.

I *think* he fitted a low profile heatsink & fan + drilled some holes in the trapdoor cover.

But to get the airflow he put fans on the top of the A1200 case possibly operating in the opposite direction.

[rkauer]

Nathan/AmigaManiac have one MC68040 for sale on his site, but not mask Alexh pointed:
MC68040RC33V PGA CPU (Mask code 73F54F, manufactured in 2001, week 50). Any good?

http://www.amigamaniac.com/CPUs_FPUs.html

[Loedown]

Originally Posted by alexh

If you can find an MC68040RC25A with a mask of L88M that will work with no heatsink or fan. They were the last ones ever made and they run cool to touch even at 40MHz

http://www.freescale.com/files/share...cn/PCN8219.htm

They are not very common though.

Motorola must have done a massive rejig of the die to achieve such results, I wonder what their compulsion was?

[gulliver]

BTW, how do I remove the thermal paste that holds the heatsink on top of the 68040?

[alexh]

Originally Posted by rkauer

MC68040RC33V PGA CPU (Mask code 73F54F, manufactured in 2001, week 50). Any good?

Is that even an Amiga compatible CPU? I don't think so.

http://www.freescale.com/webapp/sps/...omSearch=false

Originally Posted by Freescale

• The MC68040xxxxV is not pin compatible with the MC68040.
• The DLE pin has changed to JSO
• It has three new pins (182 not 179): System Clock Disable SCD, Low Frequency Operation LFO and Loss of Clock LOC.
• The MC68040xxxxV like the MC68LC040 does not contain an FPU
• The MC68040xxxxV is a 3.3v device

Originally Posted by Loedown

Motorola must have done a massive rejig of the die to achieve such results, I wonder what their compulsion was?

The fab which made the older (0.8um) parts closed and the fab it was moved to had a different (lower, 0.57um) geometry.

Originally Posted by freescale

Motorola is pleased to announce the successful qualification of the MC68040, transferred to our MOS11 wafer fabrication facility in Austin, Texas, as a result of the closure of the TSC8 wafer fabrication facility in Sendai, Japan. This transfer allows for continued customer support of these products.

Their compulsion was either stop making 68040 or change the mask set to the newer geometry. This is a common practice. Depending on how nice the design is this may have even been an automated task.

[amigamaniac]

@alexh

Thanks for that info! I always wondered about that V suffix! I don't know why I didn't bother to look on Freescale's website, as I often do It does say it operates at 5V in the far right column. From the datasheet, a low power mode of 3.3V is "available"?:

http://cache.freescale.com/files/32b...=Documentation

So it seems the difference between the V and A is that the V has no on-baord FPU, like you said:

http://www.freescale.com/webapp/sps/...0&fsrch=1&sr=1

Also the extra pins. Would this even plug into a 179 pin PGA socket? I sold one of these ages ago to someone, and not a peep from them. I can only assume they are using it. I would hope that they would have contacted me if it didn't fit (too many pins) or didn't work :-S

I better take it off my website just in case. It looks like it is the A suffix that is the one we want

I'd be interested in sending the MC68040RC33V I have to someone that has the hardware to see if (a)it can even be plugged in, and (b)if so, does it work? Any takers? Of course, I would want it back regardless - I will pay all postage/shipping costs, so it won't cost any money for the (also) curious soul.

Nathan

[amigamaniac]

Actually, if I remember correctly, I ordered this part for someone, but he didn't buy it because I took too long to get it Either that or he realised it was the wrong part. Oh, the shame!

Nathan