Difference between revisions of "YM2612"

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==Registers==
 
==Registers==
  
[[YM2612 Registers]]
+
See [[YM2612 Registers]].
  
 
==Port==
 
==Port==

Revision as of 01:25, 4 August 2012

Registers

See YM2612 Registers.

Port

Writing

Description Zone Address
Part I address (A0) Z80 $4000
M68K $A04000
Part I address (D0) Z80 $4001
M68K $A04001
Part I address (A1) Z80 $4002
M68K $A04002
Part I address (D1) Z80 $4003
M68K $A04003

Reading

Reading from any of the port will return the status register.

Bit 7 6 5 4 3 2 1 0
Def 1 : Busy

0 : Ready for new data

Unused 1 : Timer A Overflow

0 : Not overflow

1 : Timer B Overflow

0 : Not overflow