Freedos is like 30 MEGAbytes, atiflash.exe and the firmware is about 500 kilobytes, so any USB stick will do. The only thing is that some USB memory sticks boot nicely and some don't. I have no clue why is it like this. I once had like 5 different sticks with exactly the same data layout contents and two of them booted OK, three didn't.
The numbers you've encountered are numbers for Airport (wifi) antennae. While Apple insists they are numbered for a reason, a lot of users (myself included) think the numbers were assigned at random and do not mean a thing. Oddly enough, my Airport card works best when number 2 and BT is connected, BT standing for bluetooth. The BT module, on the other hand, is more than happy with number 1 connected. Short read: if your wifi works, you don't need to care.
oh,... i think i have a good booting chance with 3 8gb usb, inc noname one. will test and see.
Will try to see if i can also boot on my PPC G5 using the freedos as well.
For the Airport numbers, this is interesting ! My macpro, i am sure has no wifi card on it (i bought it used and did not have airport)
Actually i was thinking of buying a used BT module/ chip to put on the motherboard. Does BT need airport card to operate ?
For 150 Euros I think you're looking into ATI 6850 - maybe even 7950 territory.
I believe if you'd find a "reference design" or "Sapphire" 7850, 7950, 7970, there is a lot of firmware you'd be able to find online. I can help you out with some 7950 and 7970 firmware I have for some Sapphire and VTX cards; the http://netkas.org forums are an indispensable source of firmware files for various cards as well.
The good news is: if the card comes from the ATI/AMD 79x0 family and there is no suitable Mac firmware, there is an extremely easy way to create a working firmware file using the dump of the original firmware and a smart script, that patches it with the necessary code for Macs. The only requirement is that the card has a 128 kbytes firmware flash memory, which happens 99.9% anyway.
By the way - flashing the card for Mac does not replace the "PC" code, so the card is good for Mac OS, Windows, or any other operating system you may fancy.
For the card what is a 'reference design' please ? Do you mean other brands that copy the design of ati/amd cards ?
I will check these cards to make a clue. i see they cost cheap when bought used, hoping to see the bootscreens too.
I will have the 79x0 vxt saphire's in my mind to search for and see specs etc. and we talk again
Did not know the cards can be used in all platforms. I thought they were specific pieces of code and compatibilities issues of platforms.
Anyway, at last i see some light in the tunnel concerning my upgrade steps!
Thanks again !