[Amiga] WinFellow 0.4.4 alpha p677/8 [20/07/11]

Zombie Apocalypse

Ivanhoe

WinFellow 20.07.11 p678

• Reduced overhead some more in bus event and cpu instruction scheduling some more.
• Trying out another memory ptr optimisation to reduce opcode read time. Needs more work to be safe.

WinFellow 20.07.11 p677

Some optimizations:

• Added cpuIntegrationExecuteInstructionEventHandler68000Fast, hardcoded for the usual 7Mhz scenario. Reduces overhead of instruction time calculations.
• Removed cpuSetCurrentOpcode call from cpuExecuteIntruction when logging isn't compiled in.

WinFellow 18.07.11 patchset 676

Some optimizations:

• bus and CPU module: bus event and cpu instruction logging moved into #ifdefs. Removes dummy calls to logging functions found in the main bus loop, and the cpu instruction execution entry point and from irq and exception processing.
• CPU module: CPU flag calculations rewritten for speed.
• fmem.c: Re-introduced an old optimisation in a more general form, using memory pointers to read values from memory that is real memory.
• floppy.c: Was doing some minor logging of head positions. Commented it out.
• bus.c and cpuIntegration.c: Some other tweaks to the bus event loop and cpu execution loop to make sure no unnecessary code was run inside the loops.
• sysinfo: Using ...Ex method to read memory size larger than 4GB.