09561: spcforce: Sound is too high-pitched, sound CPU clock possibly incorrect

ID	Category [?]	Severity [?]	Reproducibility	Date Submitted	Last Update
09561	Sound	Minor	Always	3 days ago	13 hours ago

Tester	125scratch	View Status	Public	Platform	MAME (Official Binary)
Assigned To		Resolution	Fixed	OS	Windows (x64)
Status [?]	Resolved			Driver	misc/spcforce.cpp
Version	0.289	Fixed in Version	0.290GIT	Build	x64
		Fixed in Git Commit	cec5236	Github Pull Request #

Summary	09561: spcforce: Sound is too high-pitched, sound CPU clock possibly incorrect
Description	PCB footage: I heard from jadsi that the SN76496s should be clocked at 768 kHz and the 8035 should be clocked at 3.072 MHz, but I'm not sure how accurate that is.
Steps To Reproduce
Additional Information
Github Commit

Flags
Regression Version
Affected Sets / Systems	spcforce

Attached Files

No.24733 hap Developer 3 days ago edited on: 3 days ago	I don't know who that is, but ok, credit for fix goes to jadsi.
No.24736 125scratch Tester 2 days ago	Just someone I know on Discord. The pitch is definitely more accurate after the fix, but it seems like the fire sound is still hanging or sustaining sometimes. jadsi had this to say: "I know the 8035 controls how fast the non-60 hz sounds play, and it seemed to be twice as fast as the speed it was meant to be"
No.24737 125scratch Tester 2 days ago	He also said he doubts the 8085A is clocked quite as high as 16MHz, so take that how you will.
No.24740 AJR Developer 23 hours ago	8085A was rated for an X1 input of up to 6.25 MHz (CLK output is half that frequency); 6.144 MHz was very commonly used and is the only XTAL on the Space Force PCB. 8085A-2 could take a 10 MHz XTAL.
No.24742 hap Developer 13 hours ago	I already removed the 16mhz overclock in that same commit.