Search found 3 matches

by andsve
Mon Sep 03, 2018 3:50 pm
Forum: NESemdev
Topic: Understanding nestest STA to $4015
Replies: 4
Views: 9141

Re: Understanding nestest STA to $4015

Makes sense! Thanks man for the help, really been scratching my head at this. :)
by andsve
Mon Sep 03, 2018 3:40 pm
Forum: NESemdev
Topic: Understanding nestest STA to $4015
Replies: 4
Views: 9141

Re: Understanding nestest STA to $4015

Aha! I was thinking along those lines, but it didn't make sense to me since $4015 should be set to 0x00 at init?
by andsve
Mon Sep 03, 2018 3:22 pm
Forum: NESemdev
Topic: Understanding nestest STA to $4015
Replies: 4
Views: 9141

Understanding nestest STA to $4015

Hi all, long time lurker here! :) Been hacking for a while, but now I'm in dire need for some help about something I can't wrap my head around regarding nestest.log. On line 8981 the rom does a STA, where A is 02, to $4015. My emu writes 02 to this address (which should be APU status reg?), but acco...