level 3
yanmingsohu
楼主
如题
1. Starting at the instant the VINT flag is pulled down (when a NMI is
generated), 20 scanlines make up the period of time on the PPU which I like
to call the VINT period. During this time, the PPU makes NO access to it's
external memory (i.e. name / pattern tables, etc.).
这就是垂直消隐周期么???
2011年09月14日 07点09分
1
1. Starting at the instant the VINT flag is pulled down (when a NMI is
generated), 20 scanlines make up the period of time on the PPU which I like
to call the VINT period. During this time, the PPU makes NO access to it's
external memory (i.e. name / pattern tables, etc.).
这就是垂直消隐周期么???