CJ2 CPU Unit Software User's Manual - CIP ETI

AppendicesA-1-12Special Math InstructionsInstruction Mnemonic Code Symbol/Operand Function LocationBINARY ROOTBCD SQUAREROOTARITHMETICPROCESSFLOATINGPOINT DIVIDEROTB@ROTBROOT@ROOTAPR@APRFDIV@FDIVExecutioncondition620 Output RequiredROTB(620)Computes the square root of the 32-bit binary contentof the specified words and outputs the integer portionSof the result to the specified result word.RS: 1st source wordR: Result wordS+1 SBinary data (32 bits)RBinary data (16 bits)072 Output RequiredROOT(072)Computes the square root of an 8-digit BCD numberand outputs the integer portion of the result to theSspecified result word.RS+1 SRS: 1st source wordBCD data (8 digits)BCD data (4 digits)R: Result word069APR(069)CSRCalculates SIN, COS, or linear extrapolation.SIN or COS calculation: Calculates the SIN or COS fromangle data (0° to 90°) and outputs the result in BCD tofour places below the decimal.Linear extrapolation: Calculates and outputs a linearextrapolation in binary from the specified input data.C: Control wordS: Source dataR: Result wordOutputRequired079 Output RequiredFDIV(079)Divides one 7-digit floating-point number by another.The floating-point numbers are expressed in scientificDdnotation (7-digit mantissa and 1-digit exponent).DrQuotientRR+1 RDd: 1st dividendDr+1 DrDd+1 DdwordDr: 1st divisorwordR: 1st result wordA-1 Instruction Functions AppA-1-12 Special Math InstructionsBIT COUNTERBCNT@BCNT067 Output RequiredBCNT(067)Counts the total number of ON bits in the specifiedword(s).NSN wordsCounts the number ofRtoON bits.N: Number ofwordsS: 1st source wordR: Result wordS+(N −1)RBinaryresultCJ2 CPU Unit Software User’s ManualA-37