1. xerox 560 computer system - The UK Mirror Service

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Y OYf'lV r'f'lrnf'lrtil"\n'''' ..... 1_'' --'t-'- .........._..701 South Aviation BoulevardEI Segundo, California 90245" r"~"" I}\t:I~UJ\Reader Comment FormWe would appreciate your comments and suggestions for improving this publication.Publ ication No.I Rev.Letter I Tit I e I Current DateLearning Install ing 0 o Sales Fully Covered DWell Illustrated o Well Organized o Clearo Reference o Maintaining0 OperatingWhat is your overall rating of this publication?What is your occupation?o Very Good0o GoodFair o Very Pooro PoorYour other comments may be entered here. Please be specific and give page, column, and line number references whereapplicable. To report errors, Please use the Xerox Software Improvement or Difficulty Report (1188) instead of this form.How did you use this publication?Is the material presented effectively?IIYour Name & Return Address2190(12172)Thank You For Your Interest. (fold & fasten as shown on back, no postage needed if mailed in U.S.A.)
~taplevU:lfJlt:FoldFirst ClassPermit No. 229EI Segundo,CaliforniaBUSINESS REPLY MAILNo postage stamp necessary if mailed in the United StatesPostage will be paid byXerox Corporation701 South Aviation BoulevardEI Segundo, California 90245Attn: Programming PublicationsFold
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Xerox 560 ComputerReference Manual9
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4. INPUT/OUTPUT OPERA TIO NS 142 AG
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1. XEROX 560 COMPUTER SYSTEMINTRODU
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Many operations are performed in fl
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Rapid Context Switching. When respo
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2. SYSTEM ORGANIZATIONThe elements
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FAST MEMORYARITHMETIC AND CONTROL U
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INFORMATION BOUNDARIESBasic process
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(Maximumof eight)Core Core Core Cor
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3. Diagnostic logic. Each memory dr
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eference address field of the instr
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Instruction in memory:Instruction i
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Real-extended addressing is specifi
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Table 1. Basic Processor Operating
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DesignationFunctionDesignationFunct
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InterruptStateDisarmedArmed[$Waitin
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AddressTable 2. Interrupt Locations
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is assumed to contain an XPSD or a
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Table 3. Summary of Trap LocationsL
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TRAP MASKSThe programmer may mask t
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PUSH-DOWN STACK LIMIT TRAPPush-down
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Instruction Name Mnemonic FaultDeci
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subroutine. However, with certain c
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3. INSTRUCTION REPERTOIREThis chapt
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CC1 is unchanged by the instruction
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Condition code settings:2 3 4 Resul
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Example 2, odd R field value:Before
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significance (FS), floating zero (F
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next sequential register after regi
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R 1 R2 R3 MeaningoThe effective vir
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MIMULTIPLY IMMEDIATE(Immediate oper
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original contents of register R, re
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Instruction NameCompare HalfwordMne
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2 3 4 Result of ShiftCircular Shift
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4. At the completion of the left sh
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Instruction NameFloating Subtract L
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The following table shows the possi
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Table 8.Condition Code Settings for
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PACKED DECIMAL NUMBERSAll decimal a
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DSTDECIMAL STORE(Byte index alignme
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If no indirect addressing or indexi
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Instruction NameMnemonicDesignation
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Both byte strings are C bytes in le
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of the destination byte that caused
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again present, unti I a positive or
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The new contents of register 7 are:
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traps to location X'42 1 as a resul
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If there is sufficient space in the
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If CC1, or CC3, or both CC1 and CC3
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appropriate memory stack locations
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II, EI) are generated by II ORing"
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In the real extended addressing mod
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CAll INSTRUCTIONSEach ofthe four CA
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The XPSD instruction' is used for t
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If (I)1O = 0, trap or interrupt ins
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For either memory map format and ei
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initial value plus the initial valu
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Table 9. Status Word 0Field Bits Co
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READ INTERRUPT INHIBITSThe followin
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Table 11.Read Direct Mode 9 Status
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SET ALARM INDICATORThe following co
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INPUT jOUTPUT INSTRUCTIONSThe I/o i
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Table 13.Description of I/o Instruc
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Table 15.Device Status Byte (Regist
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Table 16. Operational Status Byte (
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Table 19.Status Response Bits for A
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If CC4 = 0, the MIOP is in a normal
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2 3 4 Meaningo 0 I/o address not re
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The functions of bits within the DC
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4. Each unit-record controller (int
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Interrupt at Channel End (Bit Posit
Page 153 and 154: Transfer in Channel. A control lOCO
Page 155 and 156: Otherwise, the first word of the ne
Page 157 and 158: Depending upon the characteristics
Page 159 and 160: change the rate on the primary cons
Page 161 and 162: Location(hex) (dec)20 3221 3322 342
Page 163 and 164: Table 22.Diagnostic Control (P-Mode
Page 165 and 166: at its normal rate (e. g., fixed du
Page 167 and 168: SET LOW CLOCK MARGINSThis command c
Page 169 and 170: BP STATUS AND NO.Th i s group of i
Page 171 and 172: Input5MPri ntout5MFunctionStore X 1
Page 173 and 174: 6. SYSTEM CONFIGURATION CONTROLPool
Page 175 and 176: Table 25. Functions of Processor Cl
Page 177: Table 26. Functions of Memory Unit
Page 180 and 181: STANDARD 8-BIT COMPUTER CODES (EBCD
Page 182 and 183: STANDARD SYMBOL-CODE CORRESPONDENCE
Page 184 and 185: STANDARD SYMBOL-CODE CORRESPONDENCE
Page 186 and 187: TABLE OF POWERS OF SIXTEEN II162564
Page 188 and 189: HEXADECIMAL-DECIMAL INTEGER CONVERS
Page 194 and 195: HEXADECIMAL-DECIMAL FRACTION CONVER
Page 196 and 197: HEXADECIMAL-DECIMAL FRACTION CONVER
Page 198 and 199: APPENDIX B.GLOSSARY OF SYMBOLIC TER
Page 200 and 201: TermMeaningTermMeaningWKxWrite key
Page 202 and 203: Table C-2. Memory Unit Status Regis
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