Page 11 of 11
Re: Slow DSP investigation with DFB1
Posted: 29 Oct 2026 03:27
by mikro
Sounds plausible. Centurbo II (which also accelerates DSP, data bus, CPU etc) basically pulled all GALs out and replaced their functionality on its own board.
I think this is a much better approach than forcing buyers to flash their own GALs. ;)
Re: Slow DSP investigation with DFB1
Posted: 29 Oct 2026 08:02
by exxos
mikro wrote: 29 Oct 2026 03:27
Sounds plausible. Centurbo II (which also accelerates DSP, data bus, CPU etc) basically pulled all GALs out and replaced their functionality on its own board.
I think this is a much better approach than forcing buyers to flash their own GALs. ;)
Well, it didn't take long for someone to find something to complain about. Was expecting something from you like this in fact already.
Nobody is forcing anyone to flash anything. The DFB1X works exactly as it always has without it. This is an optional fix for an Atari design quirk that also hits the CT60, and it took BW, pakman and a fair few evenings to track down.
As for the Centurbo II approach, ripping out all the GALs and replacing them with a board and bodge wires is hardly what I'd call elegant. Swapping one socketed GAL keeps the machine original, costs pennies, takes seconds, and can be put back to stock just as quickly. It fixes the problem at the source, in the chip where Atari put the extra delay in the first place. A stock machine without a booster behaves exactly the same with it fitted.
Personally I'd rather change one chip than redesign half the motherboard, but each to their own.