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XDS 910 Reference Manual
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XDS 910 BASIC INSTRUCTIONSICentral ProcessorsjVlnemonic Code Name Page Mnemonic Code Name PageLOAD/STORE TEST/SKIPLDA A, T 76 Load A from Memory SKG A, T 73 Skip if A Greater Than Memory 13STA A, T 35 Store A in Memory SKM A, T 70 Skip if A = Memory on B Mask 13LDB A, T 75 Load B from Memory SKA A, T 72 Skip if A and M Do NotSTB A, T 36 Store B in Memory Compare Ones 13LDX A, T 71 Load Index from Memory SKN A, T 53 Skip if Memory Negative 14STX A, T 37 Store Index in MemoryEAX A, T 77 Copy Effective Address into Index SHIFTARITHMETIC RSH N, T 066 OOOXX Right Shift AB 14RCY N, T 066 200XX Right Cycle AB 14ADD A, T 55 Add Memory to A LSH N, T 067 OOOXX Left Shift AB 15MIN A, T 61 Memory Increment LCY N, T 067200XX Left Cycle AB 15MDE A, T 60 Memory Decrement NOD N, T 067 100XX Normalize, Decrement X 15SUB A, T 54 Subtract Memory from AMUS A, T 64 Multiply Step CONTROLDIS A, T 65 Divide Step 10 HLT 00 Halt 15NOP 20 No Operation 16LOGICAL EXU A, T 23 Execute Instruction in Memory 16ETR A, T 14 Extract 10 BREA KPOINT TESTSMRG A, T 16 Merge 10EOR A, T 17 Exclusive OR 11 BPT 1 04020400 Breakpoint No. 1 Test 16BPT 2 04020200 Breakpoint No.2 Test 16BPT 3 04020100 Breakpoint No.3 Test 16REGISTER CHANGE BPT 4 04020040 Breakpoint No.4 Test 16RCH 46 Register Change 11XAB 04600000 Exchange A and B 11 OVERFLOWBAC 046 10000 Copy B into A, Clear B 11 OVT o 40 20001 Overflow Test; Reset 16ABC 046 20000 Copy A into B, Clear A 11 ROV o 0220001 Reset Overflow 16CLR 046 30000 Clear AB 11BRANCH INTERRUPTEIR 002 20002 Enable Interrupts 20BRU A, T 01 Branch Unconditionally 12 DIR 00220004 Di sabl e Interrupts 20BRX A, T 41 Increment Index and Branch 12 lET 04020004 Interrupt Enabled Test 20BRM A, T 43 Mark Place and Branch 12 !DT 040 20002 Interrupt Disabled Test 20BRR A, T 51 Retu rn Bronc h 12 AIR 002 20020 Arm Interrupts 21Legend: A = address, *A = indirect address; T = tag field; N = number of shifts |
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