BSNES v0.045 released

[Robert]

SNES emulator

 

v0.045

 

bsnes v0.045 released

2009-04-19

This is a maintenance release to fix a crashing bug in S-DD1 games (Star Ocean, Street Fighter Alpha 2), and a video issue in games using the WAI instruction.

 

As always, my apologies for any inconvenience. SA-1 support required modification of a large amount of delicate code in the emulation core, and our limited testing team was not able to catch these in time before release.

 

v0.044

 

bsnes v0.044 released

2009-04-19

This release adds full SA-1 support, with no known issues. All 26 games have been tested by myself and others, and a few have been beaten from start to finish. The latter include Super Mario RPG, Kirby's Dreamland 3, Kirby Super Star and Jikkyou Oshaberi Parodius.

 

Please understand that the SA-1 is essentially four times faster than the SNES' main CPU, so system requirements will be very high for these games. For example, on an E8400 @ 3.0GHz, I average ~160fps in ordinary games. But for SA-1 emulation, this drops to ~90fps, with the worst case being ~80fps.

 

The following features are emulated:

 

- 5a22 CPU core (bus-cycle accurate)

- Memory access timing

- SA-1 -> S-CPU interrupts (IRQ + CHDMA IRQ)

- S-CPU -> SA-1 interrupts (IRQ + Timer IRQ + DMA IRQ + NMI)

- SIV / SNV interrupt vector selection

- Timer unit (linear and H/V)

- Super MMC unit (ROM + BW-RAM)

- BS-X flash cart slot mapping

- Normal DMA

- Character-conversion 1 DMA (2bpp + 4bpp + 8bpp)

- Character-conversion 2 DMA (2bpp + 4bpp + 8bpp)

- BW-RAM virtual bitmap mode (2bpp + 4bpp)

- Arithmetic unit (multiplication + division + cumulative sum)

- Variable-length bit processing (fixed and auto increment)

 

While the following features are not currently emulated, mostly due to lack of information:

 

- SA-1 bus conflict delays

- Write protection (BW-RAM + I-RAM)

- SA-1 CPU priority for DMA transfers

- DMA access timing

 

v0.043

 

bsnes v0.043 cancelled

2009-04-18

Immediately after uploading v043, multiple bugs are spotted. How annoying. I'm going to pull and skip v043, sorry for the inconvenience. Hopefully expect v044 soon.

>> Get it HERE.