Intel i960 Jx Developer's Manual page 6

5.2.12 Processor Management ........................................................................................ 5-19
5.3 PERFORMANCE OPTIMIZATION .............................................................................. 5-20
5.3.1 Instruction Optimizations ....................................................................................... 5-20
5.3.1.1 Load / Store Execution Model ........................................................................ 5-20
5.3.1.2 Compare Operations ...................................................................................... 5-20
5.3.1.3 Microcoded Instructions ................................................................................. 5-21
5.3.1.4 Multiply-Divide Unit Instructions ..................................................................... 5-21
5.3.1.5 Multi-Cycle Register Operations ..................................................................... 5-21
5.3.1.6 Simple Control Transfer ................................................................................. 5-22
5.3.1.7 Memory Instructions ....................................................................................... 5-22
5.3.1.8 Unaligned Memory Accesses ......................................................................... 5-23
5.3.2 Miscellaneous Optimizations ................................................................................. 5-23
5.3.2.1 Masking of Integer Overflow ........................................................................... 5-23
5.3.2.2 Avoid Using PFP, SP, R3 As Destinations for MDU Instructions ................... 5-23
5.3.2.3 Use Global Registers (g0 - g14) As Destinations for MDU Instructions ......... 5-23
5.3.2.4 Execute in Imprecise Fault Mode ................................................................... 5-24
CHAPTER 6
INSTRUCTION SET REFERENCE
6.1 NOTATION .................................................................................................................... 6-1
6.1.1 Alphabetic Reference .............................................................................................. 6-2
6.1.2 Mnemonic ................................................................................................................ 6-2
6.1.3 Format ..................................................................................................................... 6-2
6.1.4 Description ............................................................................................................... 6-3
6.1.5 Action ....................................................................................................................... 6-3
6.1.6 Faults ....................................................................................................................... 6-5
6.1.7 Example ................................................................................................................... 6-5
6.1.8 Opcode and Instruction Format ............................................................................... 6-6
6.1.9 See Also .................................................................................................................. 6-6
6.1.10 Side Effects ............................................................................................................. 6-6
6.1.11 Notes ....................................................................................................................... 6-6
6.2 INSTRUCTIONS............................................................................................................ 6-6
6.2.1 ADD<cc> ................................................................................................................. 6-7
6.2.2 addc ....................................................................................................................... 6-10
6.2.3 addi, addo .............................................................................................................. 6-11
6.2.4 alterbit .................................................................................................................... 6-12
6.2.5 and, andnot ............................................................................................................ 6-13
6.2.6 atadd ...................................................................................................................... 6-14
6.2.7 atmod ..................................................................................................................... 6-15
6.2.8 b, bx ....................................................................................................................... 6-16
6.2.9 bal, balx ................................................................................................................. 6-17
6.2.10 bbc, bbs ................................................................................................................. 6-19
6.2.11 BRANCH<cc> ........................................................................................................ 6-21
6.2.12 bswap .................................................................................................................... 6-23
6.2.13 call ......................................................................................................................... 6-24
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