VIDCON0_ENVID
decon_set_bits(ctx, DECON_VIDCON0, VIDCON0_ENVID | VIDCON0_ENVID_F, ~0);
val = VIDCON0_ENVID | VIDCON0_ENVID_F;
val |= VIDCON0_ENVID | VIDCON0_ENVID_F;
vidcon0 |= VIDCON0_ENVID | VIDCON0_ENVID_F;
if (vidcon0 & VIDCON0_ENVID) {
vidcon0 |= VIDCON0_ENVID;