Open tomcw opened 1 year ago
From Wikipedia:
I fixed this, as it was wrong: The Mockingboard sound card for Apple II doesn't use customize-set MSB register bits. https://en.wikipedia.org/wiki/General_Instrument_AY-3-8910
Also added these extra tests: 3b35651377c4a4a4acd460f561df5d64d656770b 180795e1811e3ac6f5b8afdcfc890daa9ed1ce0b 32b937a3a61b9f04632c6a26ce6d43c39ad99ad3
Some observations about Phasor Echo+ mode: NB. This is from Phasor-native mode, and then using TAB to cycle (via "Software Selection") to Echo+ mode.
Support Echo+ AY detection: 74a2a67d2c2c633965e505ee4ccdc80ef6e5a372
Phasor DIP SW1=OPEN(Hardware mode selection), SW2=OPEN(Echo+)
mb-audit v1.3, TestAYTones:
Any key '1','2',...'6' outputs a tone to both speakers (and as more tones are enabled, then the volume increases).
Remaining to do:
Since I can't read the AY regs, then I don't even know the AY writes are working!EDIT: I can read the Echo+ AY regs (and this is now implemented in mb-audit).NB. the Echo+ has a single 6522 and 2x AY's.
From Wikipedia: