NESASM video not working

CartCollector · Post by **CartCollector** » Tue Oct 31, 2006 7:32 pm

Okay, I've tried compiling the two demos that come with NESASM (COLOR and JUNKDEMO) using NESASM 2.51. Whenever I run COLOR in FCE Ultra, Nintendulator, or Nestopia, I get the infamous "grey screen." Whenever I run JUNKDEMO, I also get the grey screen, but I do get some music with it to varying degrees. FCE Ultra plays it perfectly, Nintendulator does a good job except when a frame is skipped (there's a short buzz) and Nestopia screws it up a lot. So what's going on? How can I compile my own programs with NESASM if it can't compile the ones that are included with it?

Post by **tepples** » Tue Oct 31, 2006 7:38 pm

Tony Young's Junkdemo and Mouser are compatible with Nesticle software. They are not compatible with NES hardware. The emulators you mention emulate an NES, not a Nesticle.

commodorejohn · Post by **commodorejohn** » Tue Oct 31, 2006 8:57 pm

I actually went back and looked over the JUNKDEMO code once, and as I recall the problem was that it assumed background and sprites were enabled on bootup, which is not the case. A quick run-over of its PPU init section and comparison with nestech.txt's $2000 and $2001 documentation should reveal what's wrong (sorry, I didn't keep the unmodified source around, so I can't remember exactly what was wrong.)

Emulator/console differences strike again =(

(Also, I like the idea of referring to the inaccurately-emulated NES as "a Nesticle." I wonder if there's any place you can purchase one?)

Post by **tepples** » Tue Oct 31, 2006 10:05 pm

commodorejohn wrote:(Also, I like the idea of referring to the inaccurately-emulated NES as "a Nesticle." I wonder if there's any place you can purchase one?)

No. I could sell you a PC with FreeDOS on it, but from the nestcxxx license:

It is freeware and it is not to be distributed with game
ROMs and it is not to be modified or sold.

Best path is to update Junkdemo and Mouser to run on modern emulators (and on an NES). But another part of me says that Mouser is in effect just a Hustle clone, and there are better Hustle clones that run in better emulators.

commodorejohn · Post by **commodorejohn** » Wed Nov 01, 2006 2:55 pm

(I was jesting, treating "a Nesticle" as if it were a reference to an actual console.)