Delta AH500 — 6.2.2 Explanation of Arithmetic Instructions

AH500 Programming Manual S 1 +3 S S 1 +2 S S S 1 S 1 +1 b63...b48 b47...b32 b31...b16 b15...b0 D+1 D D+3 D+2 * = b63...b48 b47...b32 b31...b16 b15...b0 S S 2 S 2 +3 S S 2 +2 S S 2 +1 b63...b48 b47...b32 b31...b16 b15...b0 Example: The multiplication of 32-bit single-precision floating-point numbers: When X0.0 is ON, the multiplicand 32.5 is multiplied by the multiplier in (D1, D0), and the product is stored in (D11, D10). The multiplication of 64-bit double-precision floating-point numbers: When X0.0 is ON, the multiplicand in (D13, D12, D11, D10) is multiplied by the multiplier in (D23, D22, D21, D20), and the product is stored in (D33, D32, D31, D30). Additional remark:

If the value in S 1 or the value in S 2 exceeds the range of values which can be represented by the floating-point numbers, the instruction is not executed, SM0 is ON, and the error code in SR0 is 16#2013. 6-50