TAM System Profiler Screen shot? Post Please.

[uniserver]

after using a heat gun and I/C's from a 6500 board,,, i finally got HAP's Prototype TAM board working.

i am just curious because i also soldered on the rom chips from the 6500 and obviously it says in profiler that its a powerPC 603ev, 250mhz Power Macintosh 6500 series.

I am wondering if that is what a TAM normally says?

because the ROM simm that came in this proto tam board does not work. the soldered on rom's from the other board do work.

Thanks

Charles

 

[uniserver]

ok i guess it doesn't matter at this point... i am just gonna ship it back to Hap... it works good, powered it on for a couple hours.

Powered it on and off about a dozen times... its good to go.

 

[snuci]

WAIT! I'll take out my Cresendo accelerator card and put the original cache back in and send you a pic.

 

[uniserver]

Thanks

you can post it here, might be valuable, i couldn't find one to save my life on google images.

 

[snuci]

It's a good thing I'm "working" from home today Sorry it's a terrible, huge phone camera pic but you get the message.

Shouldn't the prototype say "19th Anniversary Macintosh" ? But seriously, being a prototype, maybe it won't say "20th Anniversary Macintosh".

 

[uniserver]

that is what i was afraid of

well i am sure that is all stored in rom.

If he wants it to list the TAM properly in system profiler then he has to a get his rom simm fixed

or find a rom simm that works.

Still great progress though.

 

[snuci]

I recall about one board that if you moved a resistor, it reported a different "Machine ID". Maybe it was just an LC to a Performa but it might be something similar. The odds o finding that out is slim to none unless you find a hi-res image of the TAM board (I'm not volunteering). I don't know the hardware specifics of the prototype, but if the hardware is slightly different, it may not have reported as a TAM until closer to the finished product. It's a guess but is possible.

 

[finkmac]

Swapping a jumper on an LC 475 will make it display "Quadra 605"… That's probably what you're thinking of.

 

[snuci]

Swapping a jumper on an LC 475 will make it display "Quadra 605"… That's probably what you're thinking of.

That's it!

 

[mcdermd]

Somewhere around here there is a thread about the differences between a production TAM logic board and a 6500. Macdrone and I posted pics.

EDIT: Here it is: viewtopic.php?f=2&t=20293&p=194421#p194421

 

[snuci]

Uniserver, what ICs did you replace? Maybe that's got something to do with the the gestalt id? Just a shot in the dark.

 

[uniserver]

I'm entirely certain that it's ROMS from the 6500 board.

I did not document exactly what I/C's I changed, I replaced alot of smaller ones that seemed like they were part of the power on circuit.

(This was the original issue with this board.) It would not do anything when you pressed the power button on the keyboard.

Even when I reset the cuda button for 10 seconds… that is when i started swappin chips from the 6500 board.

first did all the VREGS. then CUDA, then other 8 to 20 pin I/C's

3 chips I was not going to change:

1. Texas instruments chip on the bottom BGA

2. ATI Video chip - too many legs

3. Big Lucent chip - too many legs

Then, When I finally got it to power on, It would sit there, no bong, no video, no boot, just power up at that point…

So that is when I heat gun'd off the ROMS from the 6500 and soldered them on the Proto TAM.

the Proto TAM did not have any ROM's on there just tinned pads. And a ROM Simm.