1260@100mhz

[alexh]

PCI WinTV tuner cards didn't ship with XP drivers but a WDM driver came out years later which works fine in XP

http://www.hauppauge.com/site/suppor...ci_boards.html

[delshay]

100Mhz may also possibly be on it way to a Blizzard PPC card also,but would most likly be 92Mhz bus.

found lots of problems with high speed bus,hopefully fixed.

[roy bates]

Originally Posted by delshay

100Mhz may also possibly be on it way to a Blizzard PPC card also,but would most likly be 92Mhz bus.

found lots of problems with high speed bus,hopefully fixed.

i think you may be able to get 90mhz whith 90mhz bus with 50 ns memmory on 060 with lots of cooling but i think the scsi part would give up long before. maybe someone else but i wouldent try a blizzard at 100.
maybe thers a way to have the cpu running at a defferent speed to the scsi something like a separete clock?

[roy bates]

i remembered somthing interesting while using atx power supplys that may or maynot have been mentioned on this site ,there are two types of atx power supplys in general.
1 . normal power supply that you can start up by shorting the ground pin to the power on pin.
2. the other one (soft start or silent) if you dont know anything about this one when you buy it and try to short it out to start it ,it does nothing,so what you will need to do is built a trigger on a pcb .the scematics can be found on the net but the one i found has got the npn transister missing(when the supply is on on the back its on when its ment to be off) maybe one of the tech boys here can explain it better.
the way to find out if it soft start is this .get a voltmeter put the black wire to black and use the red one on your multimeter on the purple wire (i think lol)and it should read 5 volts thats for the part on a pc motherboard that sends a signal to the power supply to tell it to turn on from the standy button .god its so hard to explain in text lol

[Photon]

Good to know, probably I've been lucky in that all the ATX PSUs I've modded used the _PSON pin. (By the way, I've always used a resistor to GND instead of shorting, since that's the example I learned from.)

It's hard to see where you've connected GND and 3.3V. I guess you could wing it by measuring for 3.3V and hope it's where the supply goes in and not a signal, but could you mark the points in the pic below?

[roy bates]

please read the post i sent to you in your thread as this requires you remove your regulator completly.and you need a heatsink and fan that covers all of your cpu.then please coment.

[roy bates]

i have a small update for this thread.

i will try to keep it as short as possible as i have a question.

ive resently had the pleasure of repairing one of these cards and upgrading it to 060,
here what i found,the card i had to repair had been half de-soldered for cpu replacement.and the 040 was half out the board by about 15 degrees,anyhow on to the interesting bit.

after changing the 74F74 to a 74AC74 things where ok untill i tried it at 100mhz if you have the following MACH 210 it WONT work at 100mhz for some strange reason.

MACH 210 -15JC (fine at 80-100mhz)
MACH 210 -12JC (80mhz is fine 100mhz is a no go crashes in a loop)

heres the question i assumed the 12JC part would be a faster propagation than 15JC.
does anyone have an answer for this?

i would REALLY like to know.because i think it is strange.

[Photon]

I didn't know, but two quick googles for Mach 12JC and Mach 15JC gave the answers for the Mach 210. 12JC is 12ns, 15JC is 15. That doesn't mean that other timings couldn't differ, or that there is another factor, like voltage. If the chips don't have identical programming, that could be a factor, too.

[roy bates]

Originally Posted by Photon

I didn't know, but two quick googles for Mach 12JC and Mach 15JC gave the answers for the Mach 210. 12JC is 12ns, 15JC is 15. That doesn't mean that other timings couldn't differ, or that there is another factor, like voltage. If the chips don't have identical programming, that could be a factor, too.

thats why i think its really strange,ive had both of these parts in the same card with identical test bed,and only the mach 210-15JC went to 100mhz.

so my assumption was correct,the 12JS part "should" of been faster.

the strangest part is there are cards out there that have this part installed,sure 80mhz is fast enough,but if they try to go to 100mhz after reading this thread there going to be dissapointed,so i thought i would mention it.

plus some 74F74's cant do 100mhz so i sugest 74AC74 apparently there rated at 125mhz,so there you go.

[Photon]

I have a Mach 210-JC15 (Yay!)

Might be worth ordering a 74AC74 either way, but in my case I think it's the PSU. I guess you haven't replaced the F74 on your board(s) though, right?

[rkauer]

How about the ROM? Doesn't it must acomplish with the speed of the rest of card? I mean, maybe the 150ns ROM is not coping with the fast MACH chip.

Or it's just a memory handler crash.

[Photon]

I asked this already and got a negative from roy (don't remember the answer right now)

[roy bates]

Originally Posted by Photon

I have a Mach 210-JC15 (Yay!)

Might be worth ordering a 74AC74 either way, but in my case I think it's the PSU. I guess you haven't replaced the F74 on your board(s) though, right?

yes, i would.i dident change the first one i did,but i had to on the second (due to battery damage)its worth it because th 74F74 are only rated upto 100mhz and they fail after long periods at that speed so yes it worth it.

[roy bates]

Originally Posted by rkauer

How about the ROM? Doesn't it must acomplish with the speed of the rest of card? I mean, maybe the 150ns ROM is not coping with the fast MACH chip.

Or it's just a memory handler crash.

nope,the rom is read "before" kickstart on the 1200 so its fine the only problems are ram access,to make sense you have to realise that the 1200 waits for the card to be ready if you get my meaning,so it will never be the rom.
yep,its just a memory handler crash,or propergation error as the memory is checked after the rom has been read.

to be honest i cant understand why nobody has done this card before,mainly because you are able to half the memory bus,"back in the day" ive had these cards running at around 60-66mhz with ram at the(they where even shipped at these speeds with rev5 60mhz parts fitted) same speed as the cpu,72-80 without and that was over 10 years ago.
just to be clear for everyone the max memory bus speed on these is around 60mhz,thats a definite.(thats the limit of the 74F257AD parts)before they fail.(there only rated at 50mhz.)

the thing is i beleive that the most anyone will be able to get from these is around 110-120mhz with the ram halfed,but you would be lucky to get a full 060 with mmu and fpu to go at such speeds,but........ i can get a FE version which can run at 133,but its not worth it for me as they have no fpu.im not sure if they even have a mmu.

[alexh]

I'd bet money the design programmed into the two different rated MACH chips is slightly different and that is why they behave differently.

[roy bates]

Originally Posted by alexh

I'd bet money the design programmed into the two chips is different and that is why they behave differently.

thinking about it,i have seen these parts on some apollo's for the 1200 and the 600,do you remember the 630,ive got one of those ,but im not brave enough to see if its the same memory controller on that card(they only ran at 40mhz which makes sense,sort of.

[alexh]

I'd bet money on them being completely different. These are CPLD chips. They will have been programmed specifically for that card and then undergone several revisions.

What is more interesting is did they all have the protection bit set? Can any of the devices be read? We all assume they did but who knows.

[roy bates]

Originally Posted by alexh

I'd bet money on them being completely different. These are CPLD chips. They will have been programmed specifically for that card and then undergone several revisions.

the mach 210-12JC and MACH-210-15JC that i have both work on the apollo 1240/60,but only the 15JC goes to 100mhz,you see how strange that is?

yes BUT,the memory bus is the same on most apollo's.


What is more interesting is did they all have the protection bit set? Can any of the devices be read? We all assume they did but who knows.

yes they did have the protection bit set,no they cant be read,a part of the cpld gets burned when written to the chip.