TF1260 rev6 problem

[Aminator]

I recently got tf1260 with motorola rev6 and i can't get it to work properly. I installed mmulib but the cpu runs very slow. I'm using OS 3.9

[Leon Besson]

Who did you buy it from?

[Aminator]

Originally Posted by Leon Besson

Who did you buy it from?

Amigastore.eu

[supaduper]

Have tried overclocking it using terriblefires CPUSPEED program

[Aminator]

Originally Posted by supaduper

Have tried overclocking it using terriblefires CPUSPEED program

I did try typing cpuspeed speed=60 and it does recognize the board and seems to change the speed but even then it gets only about 6Mips

[indigolemon]

I see you installed the MMULibs, did you add the MuFastRom line to your startup-sequence ?

[Aminator]

Originally Posted by indigolemon

I see you installed the MMULibs, did you add the MuFastRom line to your startup-sequence ?

I let the install script do that but yes mufastrom is in the startup

[supaduper]

With CPUSPEED what is fastest you have got? I.E like have you tried 94mhz ? also do you use Whichamiga to see that the overclock has worked ?

[Aminator]

Originally Posted by supaduper

With CPUSPEED what is fastest you have got? I.E like have you tried 94mhz ? also do you use Whichamiga to see that the overclock has worked ?

But shouldnt it be working at 50mhz as default? I dont think overclocking is the answer here

[supaduper]

Yes it should be working at 50mhz out of the box,yes something amiss there as the speed is very low,have you tried another CPU if you have one,also Amigastore are good shop they should answer lots of questions

[fitzsteve]

Is the memory being recognised? I have seen low MIPS like this with an accelerator working with no Fast Ram

[Leon Besson]

What does WhichAmiga show the CPU as and what speed?

Are you sure it’s an LC and NOT an EC rated CPU?

Although a lot frown on its use for some reason. Sysinfo is showing what in terms of a benchmark?

These things need to done first.

[Daedalus]

Originally Posted by fitzsteve

Is the memory being recognised? I have seen low MIPS like this with an accelerator working with no Fast Ram

Indeed, they're the kind of figures I'd expect from a fast CPU with no fast RAM. TF cards need Kickstart 3.1 or above for the fast RAM to be detected - if Kickstart 3.0 is used, the fast RAM needs to be added to the system manually using a tool during the boot process. So what exactly is the Kickstart and OS setup here? What chips are physically installed? What's loaded from hard drive? Are you softkicking 3.1 before you boot 3.9?

Originally Posted by Leon Besson

What does WhichAmiga show the CPU as and what speed?

Are you sure it’s an LC and NOT an EC rated CPU?

It's neither - there's an FPU in there. Besides, integer benchmarks are the same across all variants of the '060 at a given clock speed, and the TF1260 boots and runs at 50Mhz by default.

[Aminator]

Alright i found the culprit. It was the custom kickstart rom 3.1 from amigastore that allows to boot from the terriblefire ide. i put the original kickstart back in and now it's working.

Now i'm not sure if the custom roms got damaged during the shipping or what could be the cause of this kind of problem.
And when i installed the new roms i made sure that they were pressed firmly in place.

[Daedalus]

It's unlikely that damage would cause that sort of issue, usually bad Kickstarts give either nothing at all or a red screen, whereas this is almost working. My guess is that they used some modules from 3.0 instead of 3.1, though that would seem an odd choice given it's been customised for TF1260 use.

You can always use AddMem or similar to manually add the RAM and then reboot, or else try to find a modified 3.1 ROM that still uses the 3.1 RAM detection routines.

[derSammler]

I know that this thread is old, but did no one see in the screenshot that both caches are off? That's why it was that slow. All that was needed was probably calling "CPU" to enable the data and instruction caches.

[Daedalus]

Originally Posted by derSammler

I know that this thread is old, but did no one see in the screenshot that both caches are off? That's why it was that slow. All that was needed was probably calling "CPU" to enable the data and instruction caches.

Yes, but that's one "why" too few. Why are the caches off? With a properly configured system the caches are enabled by default during boot - the CPU command should not be required, and had it worked, would have been treating the symptoms and not the cause. The issue seems to have been that whatever customisation had been made to the ROMs had put it in a state where the caches couldn't be enabled by Setpatch during boot.

[Thomas Richter]

Originally Posted by derSammler

I know that this thread is old, but did no one see in the screenshot that both caches are off? That's why it was that slow. All that was needed was probably calling "CPU" to enable the data and instruction caches.

The CPU caches are turned on by the 68060.library during startup, unless something else turns them off. Typical examples are incomplete installations, or an improper MMU-Configuration.

[Orionis5]

Did you check if CPU rev 6 is genuine ? This is one of the sort after CPU's and a candidate for being faked one. Fake does not usually mean it does not work. It can be a different CPU and masked as CPU 6 one.