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Amiga computer related discussion => Amiga Hardware Issues and discussion => Topic started by: Tumbleweed on December 24, 2022, 12:37:04 PM

Title: Different Buster Versions
Post by: Tumbleweed on December 24, 2022, 12:37:04 PM

Whats the difference between buster rev 06 and rev 07? My 3000T had 07 (now upgraded to 11) while my 3000D has 06? Any advantage / disadvantage of using the 07 part in my 3000D?

Chip Name                        Part Number   Used in
Buster 5721                        318075-01   A2000
Buster 5731 Rev A                318075-02   A2000
Super Buster 71                390529-06   A3000
Super Buster 45                        390537-09   A4000
Super Buster 71                390539-07   A3000
Super Buster 45                        390539-09   A3000, A2631
Super Buster 45                        390539-11   A4000, A4000T

Weed

Title: Re: Different Buster Versions
Post by: AndyFC on December 27, 2022, 07:51:02 PM

Hi Tumbleweed,

I did a bit of research and found this: http://www.wonkity.com/~wblock/a4000hard/defibust.html

"Next we consider the Buster chip. The Buster in the A3000, Rev 6 or Rev 7, is a well proven design. The difference between the two is only that there was a small bug in Rev 6 that caused it to fail at 16MHz, but it works fine at 25MHz. These are what we called Level I Busters; they don't support Zorro-3 DMA or Quick Interrupts, and they don't attempt to translate local bus burst cycles into Zorro-3 burst cycles."

Title: Re: Different Buster Versions
Post by: Tumbleweed on December 29, 2022, 04:24:28 PM

Thanks Andy. I swapped the rev 6 part with the rev 7 but soon found myself getting checksum errors, read/writer errors on my SCSI2SD. The boot partition soon became non bootable. I then switched back to the Rev 6. Reinstalled OS3.2 and have had no issues since.

Weed