Capture PC Speaker to VGM files

[VSS-Vintorez]

Is your feature request related to a problem? Please describe.
I want to be able to record the PC speaker to a VGM file using MartyPC, since DOSBOX-VGM breaks for some games/demos, and with the cycle accuracy, it will be very useful for me to create accurate VGM recordings.

Describe the solution you'd like
Capturing the PC Speaker to a VGM file, similarly to DOSBOX-VGM.

Describe alternatives you've considered
I already considered DOSBOX-VGM, but as I said, it breaks on certain games/demos.
I also just considered recording the application externally with Audacity, but it could also capture other sounds that are not MartyPC, and the

Additional context
I don't think additional context is needed with my request, but if needed, I might be able to provide some.

[dbalsom]

last I checked VGM didn't actually support PC speaker and NewRisingSun accomplished it via encoding some somewhat equivalent commands to the AY-8-8910 chip.

The PC speaker isn't driven by a "sound chip" at all, but off some some simple circuitry attached to the system timer. I don't know well all the possible sounds you can make with it map to the AY-8-8910, like can you do fancy PWM audio tricks?

I think someone just needs to contribute an 8254 chip to the VGM specification...

[dbalsom]

I've added the SN76489 chip and am planning to support VGM recording for that. It would be logical to attempt to add VGM recording for the PC speaker at the same time. Stay tuned.