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architecture [2019/02/03 08:19] scott [Fundamental Data Types] |
architecture [2019/02/03 08:20] (current) scott [Fundamental Data Types] |
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Indirect address data provides a level of indirection when resolving an operand. The data is stored as either an five-digit BCD offset from a base register, or an 8-digit extended instruction operand form encoding (see [[instruction:operand_encoding|Instruction Operand Encoding]]). | Indirect address data provides a level of indirection when resolving an operand. The data is stored as either an five-digit BCD offset from a base register, or an 8-digit extended instruction operand form encoding (see [[instruction:operand_encoding|Instruction Operand Encoding]]). | ||

- | === Floating Point Data ([[:b2500_b3500|B2500/B3500]] only) === | + | === Floating Point Data (B2500/B3500 only) === |

The [[:b2500_b3500|B2500 and B3500]] processors are capable of performing floating point arithmetic. If floating point arithmetic is used, the numeric data consists, in order from lowest addressed digit to highest addressed digit, a digit designating the sign of the exponent, a two-digit exponent, a digit designating the sign of the mantissa, and a variable length one to 100-digit mantissa. The exponent range is thus -99 to +99, a very large range. The mantissa is always a whole number with the decimal point assumed to the right of the last digit. Examples: | The [[:b2500_b3500|B2500 and B3500]] processors are capable of performing floating point arithmetic. If floating point arithmetic is used, the numeric data consists, in order from lowest addressed digit to highest addressed digit, a digit designating the sign of the exponent, a two-digit exponent, a digit designating the sign of the mantissa, and a variable length one to 100-digit mantissa. The exponent range is thus -99 to +99, a very large range. The mantissa is always a whole number with the decimal point assumed to the right of the last digit. Examples: |

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