Very good guide on how to troubleshoot MACH 3 with Dexter

Dexter's MACH 3 status changed from "mostly working" to "fully working"

The new sound code change fixed it!  Warren ran through five consecutive runs of MACH 3 using Dexter with no "DISC ERROR STAY PUT" error!  I'm not going to claim that you will never ever see one of these errors ever again, but I think this kind of performance is way better than the original player ever achieved and should be awesome for any MACH 3 cabinet owner.

Made some more progress with MACH 3 audio and Dexter

So I looked at the sound code in Dexter and saw some places that may be contributing to the MACH 3 audio decoding problems.  I've applied fixes.  I was able to run through the whole disc this morning without errors.  I figure if I can do that 5 times in a row, that will probably be "good enough."

MACH 3 audio decoding troubleshooting with Dexter (with video)

Me trying to improve Dexter's performance when used with MACH 3 hardware.

Summary of what the video covers:
- Powering up MACH 3 interface board
- Going over schematics to decide what to attach scope to
- Attaching scope to view audio and audio decoding
- Fixing bad RCA jack
- Getting MACH 3 audio decoder to throw an error inadvertently
- Playing MACH 3 disc all the way through on Dexter with no errors (proving that it does work 'perfectly' at least part of the time)

Fixing Dexter's problems with MACH 3

More info than you ever wanted to know about why Dexter struggles to support MACH 3 and how I am fixing it.