MacroSystem Falcon 1240 - disable CPU?

Yod@ · 01 March 2010, 14:00

Hi all,
Just wondered if anyone might be able to tell me whether it's possible to run a MacroSystem Falcon 1240 with the 68040 disabled?

Ideally I'd like to use the extra RAM on the accelerator, but I'd prefer not to have the games compatibility issues with the 68040.
There are a set of 4 or 5 jumpers right beside the CPU but so far I haven't been able to find any documentation describing their function.

Or should I simply try removing the CPU from its socket?

Thanks!

gulliver · 01 March 2010, 18:13

I have the same accelerator.
You should disable some cpu caches of the 040 either with the cpu command or use any other utility (like MCP). That will make your system much more compatible to programs that missbehave and of course, after you use such programs, you should re-enable those caches.
I dont have any docs of this accelerator, so if you find something, please let me know!

PS: If you remove the cpu from its socket, your accelerator will not work at all!

Yod@ · 01 March 2010, 21:48

Thanks Gulliver, I won't bother removing the CPU from its socket then.

I do already have an A1200 with a Blizzard 030 accelerator, and I really don't want to go through all the games etc fiddling about trying to find settings to get them all working on the 040. It would be much easier simply to disable the CPU instead.

If I find any documentation I'll be sure to let you know.

rkauer · 02 March 2010, 00:06

Use the WHDLoad configuration and disable CPU caches there. Problem solved!

Yod@ · 02 March 2010, 00:18

Maybe I will do that.
The other reason I wanted to disable the CPU is that it runs very hot, it's one of the poor XC 68040s.
Do you or anyone else have a slimline heatsink/fan that you could recommend for this accelerator?
What sort of thermal paste should I use to affix the heatsink to the CPU?

gulliver · 02 March 2010, 00:40

I ´ve bought a MC68040 at 40 mhz not 25 from this guy www.amigamaniac.com for about 35 USD. It runs much cooler.

I am using a pc cooler with heatsink that costed me about 5 USD and that came with a proper silver adhesive grip. Go to your local pc store and buy one that is 47x47mm (the size of the 68040) or smaller. They are normally sold as northbridge or southbridge coolers.

By the way, i have been running my falcon 1240 with that MC68040 at 50 mhz. By replacing the oscillator with a 100 mhz one. Remember that in this case, cooling is compulsory!

01 March 2010, 14:00	#1
Yod@ Registered User Join Date: May 2005 Location: Bangor, N. Ireland Age: 47 Posts: 74	MacroSystem Falcon 1240 - disable CPU? Hi all, Just wondered if anyone might be able to tell me whether it's possible to run a MacroSystem Falcon 1240 with the 68040 disabled? Ideally I'd like to use the extra RAM on the accelerator, but I'd prefer not to have the games compatibility issues with the 68040. There are a set of 4 or 5 jumpers right beside the CPU but so far I haven't been able to find any documentation describing their function. Or should I simply try removing the CPU from its socket? Thanks!

01 March 2010, 18:13	#2
gulliver BoingBagged Join Date: Aug 2007 Location: The South of nowhere Age: 46 Posts: 2,358	I have the same accelerator. You should disable some cpu caches of the 040 either with the cpu command or use any other utility (like MCP). That will make your system much more compatible to programs that missbehave and of course, after you use such programs, you should re-enable those caches. I dont have any docs of this accelerator, so if you find something, please let me know! PS: If you remove the cpu from its socket, your accelerator will not work at all! Last edited by gulliver; 02 March 2010 at 00:44.

Similar Threads
Thread	Thread Starter	Forum	Replies	Last Post
Falcon 1240 - Information / Manual	Zetr0	support.Hardware	45	24 March 2016 18:14
For Sale: A1200 Falcon 1240@40Mhz + 128MB RAM	Zetr0	MarketPlace	2	22 June 2012 17:00
I urgently need Falcon 1240 jumper information	gulliver	Hardware mods	11	20 April 2010 18:58
WTB: 1240 or 1260 without cpu	Molcos	MarketPlace	5	25 January 2009 22:53
Macrosystem Falcon 1240 accelerator	gulliver	support.Hardware	11	30 May 2008 10:52

01 March 2010, 21:48	#3
Yod@ Registered User Join Date: May 2005 Location: Bangor, N. Ireland Age: 47 Posts: 74	Thanks Gulliver, I won't bother removing the CPU from its socket then. I do already have an A1200 with a Blizzard 030 accelerator, and I really don't want to go through all the games etc fiddling about trying to find settings to get them all working on the 040. It would be much easier simply to disable the CPU instead. If I find any documentation I'll be sure to let you know.

02 March 2010, 00:06	#4
rkauer I hate potatos and shirts Join Date: Oct 2007 Location: Sao Leopoldo / Brazil Age: 58 Posts: 3,482	Use the WHDLoad configuration and disable CPU caches there. Problem solved!

02 March 2010, 00:18	#5
Yod@ Registered User Join Date: May 2005 Location: Bangor, N. Ireland Age: 47 Posts: 74	Maybe I will do that. The other reason I wanted to disable the CPU is that it runs very hot, it's one of the poor XC 68040s. Do you or anyone else have a slimline heatsink/fan that you could recommend for this accelerator? What sort of thermal paste should I use to affix the heatsink to the CPU?

02 March 2010, 00:40	#6
gulliver BoingBagged Join Date: Aug 2007 Location: The South of nowhere Age: 46 Posts: 2,358	I ´ve bought a MC68040 at 40 mhz not 25 from this guy www.amigamaniac.com for about 35 USD. It runs much cooler. I am using a pc cooler with heatsink that costed me about 5 USD and that came with a proper silver adhesive grip. Go to your local pc store and buy one that is 47x47mm (the size of the 68040) or smaller. They are normally sold as northbridge or southbridge coolers. By the way, i have been running my falcon 1240 with that MC68040 at 50 mhz. By replacing the oscillator with a 100 mhz one. Remember that in this case, cooling is compulsory!

Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)