Re: [cc65] NES support in cc65

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From: Memblers (jparsell317_at_comcast.net)
Date: 2003-02-21 17:09:47


On 21 Feb 2003 at 15:08, Groepaz wrote:

> hehe i've worked with gb/gbc before.... and yeah, i had a handful dejavus when 
> working with the nes :o) (waiting for blank to avoid vram corruption.... etc 
> :=P)

I've found it's always safest to force a blank (by zeroing the $2001 register) whenever 
writing to anything outside the CPU's area.  (palette, sprite ram, and especially 
VRAM).  Then, wait for the next vblank before turning the screen back on.  Might not 
be the fastest method, but it works consistently.

 
> btw can you advice an emulator that is most close to the real thing when it 
> comes to that kinda oddities? (i dont have a dev cartridge yet either :/) i 
> am using "fceu" atm, but maybe there's something more accurate.

Yeah, FCEUltra is a good one.

Nintendulator is the most accurate NES emulator I've seen.  It seems to be accurate 
down to a pixel, but it's very CPU-intensive.
http://sourceforge.net/projects/nintendulator/


peace.
Memblers
http://www.parodius.com/~memblers/
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