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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 1186 | savelij | 1 | cpu 6502 |
| 2 | page 0 |
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| 3 | |||
| 4 | ; Note that since the mantissa is in in two's complement |
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| 5 | ; representation, its range is asymmetric towards zero. It |
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| 6 | ; can represent -2.0, but not +2.0. So if the absolute |
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| 7 | ; value is an exact power of two, the exponent for the |
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| 8 | ; negative number is one less: |
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| 9 | |||
| 10 | dcm 1.0 ; 80 40 00 00 -> 1.0 * 2^0 |
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| 11 | dcm 10.0 ; 83 50 00 00 -> 1.25 * 2^3 |
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| 12 | dcm -1.0 ; 7F 80 00 00 -> -2.0 * 2^-1 |
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| 13 | dcm 128.0 ; 87 40 00 00 -> 1.0 * 2^7 |
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| 14 | dcm -0.125 ; 7C 80 00 00 -> -2.0 * 2^-4 |
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| 15 | |||
| 16 | dcm +3 ; 81 60 00 00 -> 1.5 * 2^1 |
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| 17 | dcm +4 ; 82 40 00 00 -> 1.0 * 2^2 |
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| 18 | dcm +5 ; 82 50 00 00 -> 1.125 * 2^2 |
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| 19 | dcm +7 ; 82 70 00 00 -> 1.75 * 2^2 |
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| 20 | dcm +12 ; 83 60 00 00 -> 1.5 * 2^3 |
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| 21 | dcm +15 ; 83 78 00 00 -> 1.875 * 2^3 |
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| 22 | dcm +17 ; 84 44 00 00 -> 1.0625 * 2^4 |
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| 23 | dcm +20 ; 84 50 00 00 -> 1.25 * 2^4 |
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| 24 | dcm +60 ; 85 78 00 00 -> 1.875 * 2^5 |
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| 25 | |||
| 26 | dcm -3 ; 81 A0 00 00 -> -1.5 * 2^1 |
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| 27 | dcm -4 ; 81 80 00 00 -> -1.0 * 2^2 |
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| 28 | dcm -5 ; 82 B0 00 00 -> -1.125 * 2^2 |
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| 29 | dcm -7 ; 82 90 00 00 -> -1.75 * 2^2 |
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| 30 | dcm -12 ; 83 A0 00 00 -> -1.5 * 2^3 |
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| 31 | dcm -15 ; 83 88 00 00 -> -1.875 * 2^3 |
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| 32 | dcm -17 ; 84 BC 00 00 -> -1.0625 * 2^4 |
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| 33 | dcm -20 ; 84 B0 00 00 -> -1.25 * 2^4 |
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| 34 | dcm -60 ; 85 88 00 00 -> -1.875 * 2^5 |
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| 35 | |||
| 36 | |||
| 37 | ;dcm 0.4342945 ; ln(10) : 7E 6F 2D ED |
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| 38 | ;dcm 1.4142136 ; sqrt(2) : 80 5A 82 7A |
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| 39 | ;dcm 0.69314718 ; ln(2) : 7F 58 B9 0C |
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| 40 | ;dcm 1.2920074 ; a1 : 80 52 B0 40 |
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| 41 | ;dcm -2.6398577 ; mb : 81 AB 86 49 |
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| 42 | ;dcm 1.6567626 ; c : 80 6A 08 66 |
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| 43 | dcm 0.5 ; 1/2 : 7F 40 00 00 -> 1.0 * 2^-1 |
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| 44 | ;dcm 1.4426950409 ; ld(e) : 80 5C 55 1E |
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| 45 | ;dcm 87.417497202 ; a2 : 86 57 6A E1 |
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| 46 | ;dcm 617.9722695 ; b2 : 89 4D 3F 1D |
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| 47 | ;dcm .03465735903 ; c2 : 7B 46 FA 70 |
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| 48 | ;dcm 9.9545957821 ; d : 83 4F A3 03 |
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