Changes

<pre>{| border="1" cellspacing="0" cellpadding="5" align="center" !System!BM1 !BM2 !BM3 !BM4 !BM5 !BM6 !BM7 !BM8 !Avg -------------------------------------------------|-|BBC (B ?) |0.6 |3.2 |8.1 |8.8 |9.9 |14.3 |21.9 |48 |14.3|-|Amstrad CPC |1.1 |3.4 |9.2 |9.7 |10.3 |19.2 |29.0 |34 |14.5|-|IBM PC |1.5 |5.2 |12.1 |12.6 |13.6 |23.5 |37.4 |35 |17.6|-|Acorn Atom |0.5 |5.1 |9.5 |10.8 |13.9 |19.1 |31.1 |92 |22.8|-|VIC-20 |1.4 |8.3 |15.5 |17.1 |18.3 |27.2 |42.7 |99 |28.7|-|Apple II |1.3 |8.5 |16.0 |17.8 |19.1 |28.6 |44.8 |107 |30.4|-|Dragon 32 |1.6 |10.2 |19.7 |21.6 |23.3 |34.3 |50.0 |129 |36.2|-|Oric Atmos |1.6 |15.2 |25.4 |27.4 |33.0 |45.6 |68.5 |136 |44.1|-|SVI-328 |1.6 |5.4 |17.9 |19.6 |20.6 |30.7 |42.2 |236 |46.7|-|ZX81 (fast) |4.5 | 6.9 |16.4 |15.8 |18.6 |49.7 |68.5 |229 |51.2|-|Microtan65 |1.9 |12.8 |24.7 |27.8 |29.6 |43.2 |68.9 |243 |56.5|-|ZX Spectrum |4.8 |8.7 |21.1 |20.4 |24.0 |55.3 |80.7 |253 |58.5|-|Oric-1 |1.8 |17.1 |29.0 |31.4 |38.0 |51.8 |77.8 |230 |59.6|-|Atari 600XL |2.2 |7.2 |19.1 |22.8 |25.8 |37.6 |58.3 |412 |73.1|-|TI-99/4A |2.9 |8.8 |22.8 |24.5 |26.1 |61.6 |84.4 |382 |76.6|-}