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Re: Slow DSP investigation with DFB1

Posted: 19 Jan 2026 11:50
by stephen_usher
Let's face it, the Falcon030 was rushed out the door as a minimally viable product before it had really come out of prototype stage to try to save the company.

Re: Slow DSP investigation with DFB1

Posted: 19 Jan 2026 12:01
by charon030
On atari-home.de a user confirmed that the same issue exists on the CT60:

https://forum.atari-home.de/index.php/t ... #msg275361

Re: Slow DSP investigation with DFB1

Posted: 19 Jan 2026 12:03
by exxos
charon030 wrote: 19 Jan 2026 12:01 On atari-home.de a user confirmed that the same issue exists on the CT60:

https://forum.atari-home.de/index.php/t ... #msg275361
Thanks for sharing that.

There was something I saw somewhere about some logic from the CT2 or something which may help solve the problem ? Not had chance to read a lot of posts lately.

Re: Slow DSP investigation with DFB1

Posted: 19 Jan 2026 13:05
by Badwolf
  • The issue is per Atari's design;
  • It will affect any solderless accelerators (unless they happen to also replace a GAL) -- it's been observed on the CT60;
  • @pakman has been very kind into looking into what can be done on the GAL side and I have some work to do on that front, but I've not had time to do it yet;
  • The DSP isn't 'running slow' but communication to the DSP is slower than usual. Any program that relies on tight timing on the CPU against the DSP could be affected;
  • DFB1(X) has a disable jumper to accomodate such programs. This is inelegant, but effective.
BW