reworked ring/register fix so that Primos nevers sees RP faulted
but we don't have to do extra tests in the fetch loop
changed EAxxx routines to use RP segno when EA = register
added FP exception fault to ieeepr8 and all FP routines
added round flag to ieeepr8 (though not sure it's rounding correctly)
used gcov info to reorder some stuff in ea16s, ea32s, ea32r64r
changed warn() and fatal() to use get16t; prevpc might be a register
IMPORTANT NOTE: to compile with -O0, also use -DNOREG (gcc bug)
changed ARGT to add ring bits to LB & SB in brsave[]
major TRACE update, to debug Information tsrc$$ problem
changed MAXMB default for non-OSX platforms (PS3) to 32MB
sent to Garth around 8/15/07
supports 512MB memory
device "terminate" call
added XED emulation
more FP changes
changed devmt to emulate Kennedy tape drive & controller
devmt changes to support higher revs / fix bugs