section 7 - Index of

A.a INSTRUCTION TIMINGThis section describes how to calculate DSP56K instruction timing manually using thetables provided. Three complete examples illustrate the "layered" nature of the tables.Alternatively, the user can determine the number of instruction program words and thenumber of oscillator clock cycles required for a given instruction by using the DSP56Ksimulator. This method of determining instruction timing information is much faster andmuch simpler than using the tables. This powerful software package is available for theIBM*1M PC and SUN workstation.• Table A-6 gives the number of instruction program words and the number of oscillatorclock cycles for each instruction mnemonic.• Table A-7 gives the number of additional (if any) instruction words and additional (ifany) clock cycles for each type of parallel move operation.• Table A-a gives the number of additional (if any) clock cycles for each type ofMOVEC operation.• Table A-9 gives the number of additional (if any) clock cycles for each type ofMOVEP operation ..• Table A-10 gives the number of additional (if any) clock cycles for each type of bitmanipulation (BCHG, BClR, BSET, and BTST) operation.• Table A-11 gives the number of additional (if any) clock cycles for each type of jump(Jcc, JClR, JMP, JScc, JSClR, JSET, JSR, and JSSET) operation.• Table A-12 gives the number of additional (if any) clock cycles for the RTI and RTSinstructions.• Table A-13 gives the number of additional (if any) instruction words and additional (ifany) clock cycles for each effective addressing mode.• Table A-14 gives the number of additional (if any) clock cycles for external data,external program, and external 110 memory accesses.-The number of words per instruction is dependent on the addressing mode and the typeof parallel data bus move operation specified. The symbols used reference subsequenttables to complete the instruction word count.The number of oscillator clock cycles per instruction is dependent on many factors,*IBM is a trademark of International Business Machines.SUN is a trademark of Sun Microsystems, Inc.