VSYNC_B
.vsync = VSYNC_B,
.vsync = VSYNC_B,
int vsync_reg = (pipe == 0) ? VSYNC_A : VSYNC_B;
pipeb->vsync = PSB_RVDC32(VSYNC_B);
PSB_WVDC32(pipeb->vsync, VSYNC_B);
.vsync = VSYNC_B,