# Differences

This shows you the differences between two versions of the page.

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: