[shrek]

These are my current command line options: ./mame indy_4610 -gio64_gfx xl24 -hard1 irix65.chd -window -sound none -cheat -nothrottle

Once the emulation starts I press Scroll Lock for partial keyboard, P to pause and then `~ to get into the cheat options menu. Then press the arrow up and down keys to navigate. Then you can over or under clock stuff.


ioc2:kbd:ms_naturl:ms_natrl_cpu 200%
ioc2:kbdc:mcu 200%
maincpu 33%

This seems to make mouse and keyboard input a lot less sluggish and programs open a little quicker. In the PROM and IRIX it's still reporting a 66MHz clock so I don't know how far it can actually underclock the main CPU.

A friend suggested putting all of the MAME binaries and the IRIX CHD on a RAM disk to see what would happen. This looks like it helps make the emulated Indy a lot more responsive but doesn't really speed up the emulation of the CPU.

Make a RAM disk in Linux (needs root): mount -t tmpfs -o -size=8G tmpfs /mnt/ramdisk

Remember to copy your files back out of the RAM disk when you're done or they will get lost when you shut the computer off or unmount it!