YM2612: Difference between revisions

From MegaDrive Development Wiki
Jump to navigation Jump to search
mNo edit summary
mNo edit summary
 
(One intermediate revision by the same user not shown)
Line 1: Line 1:
==Registers==
==Registers==


[[YM2612 Registers]]
See [[YM2612 Registers]].


==Port==
==Port==
Line 59: Line 59:


0 : Not overflow
0 : Not overflow
[[Category:Audio]]
|1
|1
}}
}}

Latest revision as of 01:27, 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