RTM875t-606( Info gathering and OCing)

[Darth_nVader]

For a better Understanding of How and Why Check Moral_Hazard's PLL Mod Thread

He has already explained what is done below

Thanks goto Moral_Hazard, Nando4, and Darnok44, not to me!

Update

This can now be done!

Step 1. Download SetFSB->RUN it->CLICK Diagnosis->Chose PLL diagnosis in the Clock Generator field->Click GetFSB

Check Byte 09h bit 6

If bit 6 = 1 , You'll need to do a hardware Mod to get SetFSB to work.
If bit 6 = 0 , You can Skip the Hardware Mod.

Check Byte 07h

If Byte07h = 1E, you have the RTM875t-606
If Byte07h = <>1E, you DON'T have the RTM875t-606( And your reading the wronge Thread!)

STOP!!!!!!!!!!!!!!!!!!!!!!!

Before you go about taking your Notebook apart, you need to check if the Hardware MOD will Work for you............................

Click 00h set bit 2 to 1->Click Update->Click Apply

If your system keeps Running like it does not care, then it's Safe to do the Hardware Mod.

If your system FAILS..............STOP, you need to try and setup the PIN17/18 Pin Config (I'll add a table for this later if we have anyone that needs it, post a reply to this topic.)

Step 2

The Hardware Mod:

You need to take apart your NoteBook, I won't Help you!



I won't care if you KILL your NoteBook, Burn your House Down, or knock up your Dog, with anything you read here. It's not on me, it's yours, you did it, deal with it.

Here are some Pic of How Small these resisters are..............

If you have the TSSOP package you need to Ground PIN 4.

How you do this is up to you, that's it, your done, go ahead and put your Notebook back togather.

Step 4. Run SetFSB->Click Diagnosis->Chose RTM875t-587->Click GetFSB

Click 00h change bit 2 to 1->Hit Update->Hit Apply

Move the Top slider to the FSB/RAM timing you want to test->Hit SetFSB







We don't have a data sheet for this Clock Generator, and it seems to be in about half of the ICH8M Notebooks that use a Quanta Logic Board.

As that's at least 2 million Notebooks made in the last few years, it maybe usefully to find all the info we can.

I'm going to lay out the RTM875t-606 Registers and PINOUT as best I can, and hopefully with help from others we can gather the needed info to have it added to SetFSB.

It seems the PINOUT and Registers are near if not the Same as the ICS9LPRS365, but there maybe a few differences.

PINOUT: I'll list the Pins that I can confirm and any that maybe different.

4. PCI2/TME (I'm not sure this is the TME pin, it seem to be Pulled Low(Logic 0) on my LoBo. However Bit 6 of Byte09h is 1, I grounded this pin and removed the resister, and TME is still Pulled High, but I could have made a mistake.)

10. USB_48MHz/FSLA (Confirmed)
11. GND48 (Confirmed)
57. FSLB/TEST_MODE(FSLB is Confirmed, I don't know if RMT875t-606 has a Test Mode, I assume it does)
58. GNDREF(Confirmed)

That's all I've tested in Hardware so far I'll add to it as I can, heck the ICS9LPRS365 Datasheet for a full pinout.

Registers: At this time it seems they are the same as ICS9LPRS365, I can Confirm that Byte 00h-09h line up, However A0 and up maybe differant.

Byte 07h seems to be Read Only ( 1F Hex 00011110 Bin. )

Can anyone confirm that 1110 is Reaktek's Vendor ID?

OCing:

I can confirm that 133/167/200mhz FSB works on my ICH8m, I did try 266, but it did not POST, my CPU is T5550 so 167FSB, I'd like to try with a 800mhz CPU and 1066 too.

I'd put money on 1066 CPU's working with my ICH8M chipset, I'd have to Patch my Bios for the CPUID.

Another nice thing is: On my HP DV6871us the RTM is POLLED in Hardware on resume from sleep, so I should be able to add a set of Dip Switches, to the out side of my NoteBook.

How is this usefull?

I should be able to go from 100/133/167/200 FSB on Resume from Sleep. My CPU Supports SpeedStep from 6x to 11x with Voltage from 0.950v-1.162v, so on the Low Side 600Mhz, should save me Lots of Batt. when I don't need much CPU/Bus Bandwidth, However 2,200Mhz on the High side. NICE!

I still need to check the 100mhz setting and see if my System as a whole can run that Slow without RTC or other issues.

Also I'd like to edit the PStates in my DSDT and see if I can Drop the VID from 0.950v as that's far more than is needed @600-1200Mhz on my CPU.

[Darth_nVader]

Nice one, I'm definatly going to subscribe to your thread.

So did you pull the PCI2 pin low? Or did you do the FSL pin mod?

I've replied here as half the answer is above, and I'd like to get your take on PCI2/TME, as I can't seem to pull it LOW?

I've gone half the FSL pin mod, that is, Pull FLS x LOW or High at POST, this works for me, for now.

As I've outlined above, I'd like to check 100mhz FSB and do a Dip Switch setup, atleast until we can get SetFSB working with RTM875t-606.

My system has T5550 167mhz FSB CPU, so my CPU Frequency Select Table reads FLSc 0 FLSb 1 FLSa 1, I pull FLSa(Pin 10) low at POST by shorting it to PIN 11 with the head of a needle, then remove it after about 2 sec.

I also pulled FLSb( Pin 57 ) Low with Pin 58, the same way for 133mhz FSB.

I got lucky and my Ram is running good @ 800mhz, it has SPD for 533 and 667, but not 800.

I'm still testing, but I'll add a howto with Photo's and links to the first post when I'm done.

ORTHOS still going....................................

[moral hazard]

as I can't seem to pull it LOW?

I have seen some PLLs that use a different register for the TME bit.
So it could be possible you're looking at the wrong register in setfsb.

Maybe TME mode is disabled for you, but setfsb is trying to reprogram the wrong bits.

Have you tried using every PLL in setfsb that starts with RTM?

What exactly happens when you use setfsb? can you describe it, does the system lock up?

EDIT: Also you can try to use setfsb to change the TME bit. Change it to 0. If the bit is not RO then it should work. But it's likely the TME bit is RO.

[Darth_nVader]

I have seen some PLLs that use a different register for the TME bit.
So it could be possible you're looking at the wrong register in setfsb.

Maybe TME mode is disabled for you, but setfsb is trying to reprogram the wrong bits.

I think RTM's is also B09h bit 6.

I Lost the DataSheet for the Aspire1 A1x0, I think it may have showed an ALT Pin for TME, Does anyone still have it????

Have you tried using every PLL in setfsb that starts with RTM?

Yes, I must chose RTM, otherwise Error!

SetFSB seem to Read bits 0-3 of B07h Vendor ID, and return Err if other than selected.

I've looked at the Source Code however my Japanese....................

A mix of the Code for the ICS9LPRS365,and RTM code with a dash of what ever the TPM work around was for the 2510P.

I can change my SRC_Main_SEL B00h bit 2 to PLL3 per your post, so maybe we can find a way to help other not have to PIN MOD.

What exactly happens when you use setfsb? can you describe it, does the system lock up?

It does change some Bits, but with TME ON, no effect one the FSB.

However I can change other things, like disable spread modulation......

Note the Clock speed change, so we know that the Registers are correct.

I'm 99% sure the ICS9LPRS365 and RTM875t-606 share the same Registers, I've done many tests B00h-B009h and can confirm most of them.

I gave a shot at trying the Work around you outlined for the 2510P, but it gets a bit over my head in the datasheet as what to change in PLL3 mode @0Eh and 11h, maybe Nando4 can give it a look and dumb it down a bit for me to test.

EDIT: Also you can try to use setfsb to change the TME bit. Change it to 0. If the bit is not RO then it should work. But it's likely the TME bit is RO.

That Bit seems to be RO so I'll have to try and pull pin 4 down once more, have a look at the TRACE......

I polled that resister in the 2nd row up, where it seem to go, and it showed ground, I PULL it DOWN hard at boot with a copper wire to the DC ground of the PSU, I also Removed that resister, none of that hand any effect.

However, my MM is junk, and I really don't know how to use one that well.

Even with that resister removed, PIN4 still shows ground, however B09h bit 6 is still 1?

Once we get this TME trouble out of the way, maybe we can send a nice Email to Abo with our finding all cleaned up and ready for him to work his magic!

[moral hazard]

This Quanta Doc may be
usefull, see page 3.

...showing how it differs from the RTM875-606.

Do you still have this pdf? I would like to take another look but the link doesn't work.

[Darth_nVader]

Resource not found

No, it seems I've lost it too, maybe someone else saved it.

I tried the WayBack, but no luck.

[moral hazard]

So do you think TME is pin 4?


EDIT: Can you use setfsb to try to disable PCI2. Like I did in my thread?

[moral hazard]

I dont know what byte it is for your PLL, but are you sure the M/N Enables are enabled.

For me they are bit 0 and bit 1 of byte 21.

Consider changing those bits to 1, then try setfsb again.

[Darth_nVader]

Disable PLL2? Won't that crash my SATA?

I did change SRC_Main From PLL1 to PLL3?

I'll give Byte21 a shot in the morning, off to bed now, do you know the Logic of it?

[moral hazard]

change byte 21 from 00 to 03.

If you dont want your SATA to crash, change the source of it. Probably bit 1 of byte 0. Set it to 0 to make the source for the SATA clock = SRC_Main.