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#478 SID Card Invalid Frequency

v2.4
pending-fixed
SID card (1)
Linux
xplus4
2013-11-15
2013-11-15
Markku Reunanen
No
  1. VICE 2.4, the same behavior with 2.1
  2. Linux and Mac
  3. Tried to use emulated SID card at $fd40
  4. Too high sound frequency compared to a read SID card (NST's Audio Extension) on Plus/4

On plus4/plus4-sidcart.c it says on line 62:
return sid_sound_machine_init(psid, speed, cycles_per_sec);

Changing that to speed*2 seems to fix the issue. On a real cart the main phi2 frequency is halved before it goes to the SID.

Discussion

  • Fixed in rev 27831, thank you for catching that bug.

     
    • status: open --> pending-fixed
    • assigned_to: Marco van den Heuvel