2002.6 hit flag: when to clear it?

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2002.6 hit flag: when to clear it?
by Anes on 2006-01-06 (#8014)

2C02 reference that 2002.6 flag remains set 20 scanlines after it hited relative to vint.

I dont know if this behaves like:
- Is hited on sl 20
- is Cleared on sl 40

or

- Is hited on sl 20
- Is cleared after vblank ends.

thanks in advance.

by Disch on 2006-01-06 (#8015)

I clear it along with all the other $2002 flags right at the start of the pre-render scanline (scanline between VBlank and rendering).

by Anes on 2006-01-06 (#8016)

it seems that is the way, but i cant figure out why battletoads still dont run for me.. o thought maybe was that, but i wasnt.