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Info for nes |
Usage:
Select is mapped as Coin 1 (default key 5).
Start is mapped as Player 1 Start (default key 1).
This makes it convenient to use the driver with a "MAME" configured controller.
Famicom Disk System switching is mapped to Player 1 Button 3 (default key [space]).
Features:
Main Processor: 8bit NMOS 6502 CPU with a secondary PPU (Picture Processing Unit)
Clock Speed: 1.7897725MHz for NTSC and 1.773447MHz for the PAL version
Data Path width: 8-bits
Color Palette: 256; 16 max on screen
Sprites: 64 (8x8 or 8x16)
Sound: FM with 5 sound channels (4 analog, 1 digital)
Video Ram: 16 Kbits
SPR-RAM: 256 Bytes
Rom addressing: 8k
Cart Size: 64k - 4 Megabit
Controls: 8 directional D-Pad, A, B, select, and start buttons.
MESS Emulation State:
The NES driver should run most of the images currently out there with very little problem. It doesn't yet support the obscure one-game mappers used by many "pirate carts".
The NES driver has quite accurate sound and sample playback. For example, you can hear speech samples in Bayou Billy, Gauntlet, Dirty Harry, and Skate or Die that are not present in a few other NES emulators.
The main focus up until this point has been in getting the NES driver as accurate as possible. Unfortunately, the scanline rendering method is quite slow, so future efforts will be focusing on bringing up the speed.
Wanted: I'd appreciate any info on some of the more obscure mappers. If you have any of this, please drop me a line at bradman@pobox.com