Verify that bit 23 doesn't preserve other bits
test/testta.data

Fix parse_float_colour for values <= 0 and qNaN
src/pvr2/tacore.c

Handle NAN vertexes "correctly" (TA treats them as +/- INF)
src/pvr2/tacore.c

Add tile clip parsing
src/pvr2/tacore.c

Add masks on all PVR2 registers
Add missing registers and rename display registers for consistency
src/pvr2/pvr2.c
src/pvr2/pvr2mmio.h

Update the register list to scan the entire 5F8000-5F8200 range (ie all
PVR registers) for writeability
test/testregs.c

Add error lines to tests with incomplete polys
Split clip tests to separate data file
Add tests for cmd bit 23 ("use list size field")
test/testta.data
test/testta2.data
test/testta5.data
test/testta6.data

Add an input error event when terminating a list while there's an active
vertex list.
src/pvr2/tacore.c

Add more tile list limit tests
Implement tile list limits in the ta core.
Rename TA_TILEEND to TA_LISTEND
src/pvr2/pvr2.c
src/pvr2/pvr2mmio.h
src/pvr2/tacore.c
test/asic.c
test/asic.h
test/testta.c
test/testta4.data
test/testta5.data

Add exact qNan test
test/testmath.c