[committed] MSP430: sim: Increase main memory region size

[Tom Tromey]

Jozef> The memory-region command takes an origin address and size as arguments,
Jozef> in the same way a linker script memory map does.

Jozef> So 0xfac0 is not the end of the region, but the size of the region, and
Jozef> of course 0x500 + 0xfac0 = 0xffc0.

Thanks for the explanation!  I did not know this.

Tom