Search found 5 matches
- Fri Jan 01, 2021 9:40 am
- Forum: NESemdev
- Topic: Missing score rendering in Donkey Kong
- Replies: 1
- Views: 2430
Re: Missing score rendering in Donkey Kong
Turns out I'm a huge dumbass. Realising that the only chars missing was zeros it reminded me I had a stupid check in my nametables debug code; if (chr_i > 0) { // ... } Essentially, it didn't render anything that used chr with index 0. Screenshot 2021-01-01 at 17.40.02.png
- Wed Dec 30, 2020 7:27 pm
- Forum: NESemdev
- Topic: Missing score rendering in Donkey Kong
- Replies: 1
- Views: 2430
Missing score rendering in Donkey Kong
Hi all, I'm just started implementing the PPU in my emulator, and for the most part it is going OK. After some initial issues I can actually play the game, even though a lot of stuff is still to do. But there is an issue I just can't wrap my head around, the score and top bar is missing some tiles i...
- Mon Sep 03, 2018 3:50 pm
- Forum: NESemdev
- Topic: Understanding nestest STA to $4015
- Replies: 4
- Views: 10234
Re: Understanding nestest STA to $4015
Makes sense! Thanks man for the help, really been scratching my head at this. 

- Mon Sep 03, 2018 3:40 pm
- Forum: NESemdev
- Topic: Understanding nestest STA to $4015
- Replies: 4
- Views: 10234
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?
- Mon Sep 03, 2018 3:22 pm
- Forum: NESemdev
- Topic: Understanding nestest STA to $4015
- Replies: 4
- Views: 10234
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...