RockNES v4.00 Beta 1

posted in Emulator Release by mfc on Aug 23rd, 2004

RockNES, an NES emulator for various platforms, has been updated recently. Currently, only the DOS build has been touched. Here is what's new:

New PPU emulation core, rendering pixel-by-pixel
Accurate emulation of sprite-zero hits and max-sprites limitation
Better CPU-PPU communication/timing
Fixed CPU page crossing detection
CPU instructions core tweaked, making the object file much smaller
Fixed branch extra-cycle addition, plus hacked CPU interruptions time
Fixed B flag state on interrupts (NMI/IRQ)
Switched to PPU cycle counter
Changed WorkRAM 6000h-7FFFh write-protection behaviour
Fixed support for ROMs within trainer data
PPU monochrome mode changed and simplified
Many fixes to pAPU sound emulation (except DMC)
VRCVI sound data was always being saved, fixed
Joypads savestate support
Cry! Removed support for mappers #5 (MMC5) and #117
Broken mapper #9 (MMC2 Punch-Out!!) support, and possibly others
Removed 'hard reset' option in the GUI
Proper savestate support for mappers 21,23,25,44,64,67
Fixed WRAM behaviour on mapper 4 (or almost?)
Fixed mapper 66 crash on CHR-ROM data bankswitch (usually dirty headers)
Fixed PRG/CHR paged banks calculation on dumping
Fixed PPU IRQ counter variables saving on dumping
Fixed wrong buffer size on EAGLE blitting
Fixed directories setup
Usual minor and cosmetic changes.

You can download this from our NES Emulators section.

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