New Version Of The 68k Macintosh Emulator Basilisk II

July 20, 2008 by Hawq

JF has updated his port of this 68k Macintosh emulator for the PSP again, guess he finally decided to rest a bit between versions this time, lets see what he has to say:

Okay people, we’re really getting down to the nitty-gritty… the goalpost is in sight. I’m tempted to consider this RC1.

Here’s test 20. MAJOR changes:

The floating point has been SUBSTANTIALLY rewritten. I’ve incorporated SoftFloat into the FPU emulation to get extended precision floating point. I’ve also added most of the FPU functionality that’s usually only present in B2 when using x86 assembly. The only compromise left is the transcendental functions are still done in double precision. I seem to have cured most of the FPU problems - the scrollbars in OS8.x work, Arashi and Maelstrom play properly, the calculator gives proper answers… I’d appreciate it if people really checked this as well as they can. This was a BIG rewrite of B2 code (for the FPU). This code should also be portable, so it could help folks trying to port B2 to other platforms as well. Given the rewrite in the FPU and other more minor changes to the B2 code that AREN’T platform specific, I’ve decided to bump the B2 version from 1.0 to 1.1.

The Mac would hang on RESTART, and I don’t feel like chasing that bug down, so I altered B2 to shut down on restart instead of trying to restart. So instead of the PSP hanging and people screaming about that, now they’ll just whine about the emulator shutting down instead of restarting.

Fixed some other minor bugs, but spent so much time on the FPU that I don’t remember them anymore.

I still haven’t heard any feedback on the IR keyboard support. I’d appreciate it.