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Re: NES Programming Tutorial : Init Code

Posted: Mon Mar 13, 2017 2:48 pm
by lidnariq
rainwarrior wrote:...or maybe this is just a semantics thing, because the "unreliable" vblank flag is probably caused by resetting during vblank?
Exactly. It's neither set nor cleared by externally applying the /RESET signal.

Re: NES Programming Tutorial : Init Code

Posted: Mon Mar 13, 2017 3:12 pm
by rainwarrior
lidnariq wrote:
rainwarrior wrote:...or maybe this is just a semantics thing, because the "unreliable" vblank flag is probably caused by resetting during vblank?
Exactly. It's neither set nor cleared by externally applying the /RESET signal.
The wiki seems to suggest that it's set (or unreliable?) at power on as well.

NES users are used to having to reset a few times to get their game to work anyway, though. :P Sometimes it might be the software's fault.