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Page of GA26-5918-8Revised July 14, 1971By TNL: GN26-0269Digital Output (Continued)Busy 131Capacity of 123Command Reject 131Configuration of 124Control Capabilities 123Data Channel Active 131Data Channel AdapterOperation With External Sync 123Operation Without External Sync 124P-C Lock-Out 125Data Tables 129Device Status WordIllustration of 131Interrupt Indicators 131Noninterrupt Indicators 131Program Resettable Indicators 131Direct Program Control 55,128Operation With External Sync 123Operation Without External Sync 124Output Formats 123Parity Error 131PointsElectronic "Contact" Operate 125Pulse Output 125Register Output 125Programmed Control ModesData Channel Random 128Data Channel Single Address 128Direct Program Control 128ProgrammingBlast Reset 130Control (IOCC) 130Device Status Word 131Initialize Write (IOCC) 130Initiate Reset Timer 130Sense Device (IOCC) 130Write (IOCC) 130PulseDuration Signals 128Output Timer 130,131Trains 128Scan Complete 131Scan Control Register 58Word Count Register 58Digital-to-Analog Converter (DAC)Buffer Registers 126Description of 123Housing and Power 125Operation of 125Precision Voltage <strong>Reference</strong> 126Resolution of 126Types of 126Direct Program Control (DPC)Analog Input 102Analog Output 128Data Transfer 55Device Operating Under 55Digital Input 118Digital Output 128Direct Program Control (DPC) (Continued)General Description of 55Illustration of 56Interrupt Subroutine 55Method of 55Operation of 55Program Steps 55Relay Busy 107Relay Conversion Complete 106SS Conversion Complete 106Termination of Operation 62Disable Interrupt Switch (Console) 85Disk Not Ready (1810) 168Disk Storage (See 1810 Disk Storage)DISP (Displacement) 9Displacement 9DisplayAddress Register Switch 88Data Register Switch 88Procedures 88Divide (D) 30Double Compare (DCM) 49Double Precision Data Word 8DPC (See Direct Program Control)Drum Fast Run Switch (1627) 160Drum Single Step Switch (1627) 160DSW (See Device Status Word)111EA (Effective Address) 10Effective Address Generation 10Electronic "Contact" Operate 125Emergency Pull Switch (Console) 83Enable (CA) 188,189End-Character-Decoded or Ringing (CA) 190End Diagnostic Command (2790) 232End-of-Form Light (1443) 155End of TableAnalog Input 106System/360 Adapter 2222401/2402 Magnetic Tape Unit 175EOF (End of Field) Key 136EOR (Logical Exclusive EOR) 33ER CHR (Erase Character) Key 136ER FLD (Erase Field) Key 136Error (1443) 157Error Correction (Nine-Track) 176ETB (End of Transmission Block) 180ETX (End of Text) 180Execute I/0 (XIO) 50Execution Times, Average Instruction 51External Alarm 223,227External InterruptsDescription of 68Interrupt Vector Location 67278
Form GA26-5918-8Page Revised 10/1/70By TNL GN26-0263External Interrupts (Continued)Masking 68Programmed 69Unmasking 68External SyncAnalog InputMPX/R 98MPX/S 98Restrictions 98Analog Output 123Digital Input 115Digital Output 123F (Format) 9Feed CLU Light (1442) 148Field (2790) 238Filter Element 95Flags (Selector Channel)Chain Command (CC) 200Chain Data (CD) 200Program Control Interrupt (PCI) 201,205Skip 201Suppress Length Indication (SLI) 200Forced BSI 66Format (F)Bit 9Light 87Form Check Light (1443) 155Frame Control Check (2790) 239Function Code (IOCC)CE Mode 53Control 54Defined 53Initialize Read 54Initialize Write 54Read 53Sense Device 54Sense Interrupt 54Write 5313Guidance Character (2790) 241,242.1High Out-of-Limit (Comparator) 107High-SpeedData Acquisition 5Input (Digital) 116Loop Channels 225HLSE (High-Level, Single-Ended) 94HOPR Light (1442) 148I (Instruction Register) 8I/O (Input/Output) 1I/O Interface 53IA (Indirect Address) 10ILSW (See Interrupt Level Status Word)Immediate Stop Switch (Console) 83Implementation of BSC (CA)Receive Mode 194Transmit Mode 193In Bus 11Incorrect Length (Selector Channel) 206Index Registers (XR) 8Indirect Address (IA) 10Indirect Addressing Light 87Initial Program Load (IPL)Operation 80Requirements 801054 Paper Tape Reader 82,1421442 Card Read Punch 80,146Initialization (LCCB)Continued Read Operation 248Initial Read Operation 247Start Loop 247Write Operation 248Initialize Read (IOCC)Analog Input 105Digital Input 121System/360 Adapter 2191442 Card Read Punch 1491810 Disk Storage 1672401/2402 Magnetic Tape Unit 173Initialize Write (IOCC)Analog Input 105Analog Output 130Communications Adapter 188Digital Output 130System/360 Adapter 2201442 Card Read Punch 1491443 Printer 1561810 Disk Storage 1662401/2402 Magnetic Tape Unit 173Input/Output ControlCommandsAddress 54Area 53Function 53Modifier 54Data Channel ControlBasic Concept Example 59Cycle Steal 56Data Chaining 59Data Channel Assignment 61Data Channel Functional Components 57Data Overrun 61General Description of 56I/O Device Functional Components 58Illustration of 60Direct Program ControlGeneral Description of 55Illustration of 56Interrupt Subroutine 55Operation of 55I/O Interface 53Input/Output Interrupts 62Input/Output Termination 62Index 279
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File No. 1800-01Order No. GA26-5918
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ContentsINTRODUCTION 1SYSTEM DESCRI
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Thermocouple Conversion ExampleConv
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Status Character 2412790 ADAPTER PR
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Processor - ControllerCoreStorageOu
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Page of GA26-5918-8Revised July 14,
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egister or the index register speci
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Short InstructionDDOne WordInstruct
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Instruction SetThe 1800 system inst
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LOAD ACCUMULATOR (LD)FORMATS oitamw
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STORE ACCUMULATOR (STO)FORMATSF 0 O
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LOAD INDEX (LDX)0 OP F T Disp 151 0
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STORE STATUS (STS) Store Status Fun
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LOAD STATUS (LDS)117165 A1DESCRIPTI
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SUBTRACT DOUBLE (SD).fartzaielTmEas
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DIVIDE (D)FORMATS0 OP F T DispF T I
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LOGICAL EXCLUSIVE OR (EOR)'FORMATS
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SHIFT LEFT A AND Q (SLT)altkae..,.:
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SHIFT RIGHT LOGICAL A (SRA)FORMAT s
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ROTATE RIGHT A AND Q (RTE)FORMAT ta
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BRANCH OR SKIP ON CONDITION (BSC OR
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a4.-4KA4rE4.7.9.4.&.4VA/M4:14/24...
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',V.71..1.41VV4-02,P2A,V4,1%1,L—N
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COMPARE (CMP)FORMATS0 OP F T Disp 1
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MachineCyclesAUGEND (A-reg) and ADD
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chain is accomplished as follows: T
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InterruptTo allow for coordination
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After a request for service has bee
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2. The forced BSI with indirect add
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Storage ProtectionStorage protectio
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Page of GA26-5918-8Revised January
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Processor-Controller ConsoleThe pro
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117674,Figure 23. Console Pushbutto
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DATA FLOW DISPLAYSSix rows of light
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This command causes the console int
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High -LevelHigh -Level Low-LevelLow
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CUSTOM ELEMENT: This element is ava
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The clock stop period does not dire
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Numberingwithin 18511851's withMult
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selected analog signal to a digital
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0 1 2 3 4 5 8 7 0 9 10 14 15Indicat
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Direct Program Control Operations P
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Temp TempF C1652° 9001472° 81292
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2. Determine the ADC reading (Q val
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Digital InputDigital input features
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ead operation without external sync
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AdapterFirstSecondThirdFourthFifthS
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the next input group address (conta
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status word (PISW), the PISW is rea
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ProcessorControllerOut Bus(16 - Bit
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DAC reference voltage used in devel
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126 is assigned to the second group
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The input/output control command (I
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1053/1816 Printer IOCC'sCE ModeSpec
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Keyboard entries are not printed au
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error is detected, the program may
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the keyboard into a storage-protect
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Channel••• ••••• 14
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READER ANY ERROR: This indicator tu
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Even-Numbered ColumnsOdd-Numbered C
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1442 DSW Interrupt IndicatorsFigure
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The preceding examples show that if
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CharHexCore Storage BitsTypebar2 5
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CE PRINTER BUSY: When the 1443 is i
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DrumDownDRUM FAST RUN: This switch
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1627 DSW Noninterrupt IndicatorsFig
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120255A1Each track is divided into
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This command places the disk storag
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ANY ERROR: This indicator turns on
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LogicalDataRecordIBGapLRCIBGap.._01
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A tape mark read from seven-track t
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Modifier bits perform the five func
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an XIO initialize read operation wi
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Communications AdapterINTRODUCTIONT
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character (bit positions 0 through
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Bit PositionsP, 7, 6, 54, 3, 2, 100
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Standard replies as well as NAK cau
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either seeking characters received
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CA IOCC'sInitialize Write0 15 0 4 8
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TIMEOUT: This indicator turns on, c
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0 I 2 3 4 5 6 7 8 9 10 11 i2 13 14
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ETB, ETX, AND ENQ: These characters
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.■••.0■-3toCOc.nroz0F21.0fa
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Selector ChannelThe selector channe
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CCW Word 1 CCW Word 2 CCW Word 315B
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limited to the number of sense byte
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CSW Word 1 CSW Word 2 CSW Word 3 CS
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CSW Word 2 CSW Word 3CSW Word 40 3
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Termination of an operation with a
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Device end, when subsequently provi
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System /360 AdapterINTRODUCTIONThe
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specified by the channel command wo
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ATTENTION: This status indicates th
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HALT: This bit turns on, causing an
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Start Byte AS Address Byte Device A
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Page 238 and 239: Read data request causes the adapte
Page 240 and 241: If a 1053 Printer is addressed by t
Page 242 and 243: specific 16-word block within the c
Page 244 and 245: LCCBWord1Address Word(Active Frame)
Page 246 and 247: channel active is interrogated. If
Page 248 and 249: Form GA26-5918-8Page Revised 10/1/7
Page 250 and 251: AREA STATION LOCAL I/O TRANSACTION
Page 254 and 255: 244Form GA26-5918-8Page Added 10/1/
Page 256 and 257: Page of GA26-5918-8Revised July 14,
Page 262 and 263: When all segments are bypassed modi
Page 264 and 265: 0. It can occur only during a read
Page 268 and 269: HexadecimalValueDouble Compare (DCM
Page 270 and 271: Appendix B. I/O Device AddressingTh
Page 272 and 273: 1054 AND 1055 PAPER TAPEWRITE: Punc
Page 274 and 275: INITIALIZE WRITE: Move contents of
Page 276 and 277: INITIALIZE READ: Move tape data to
Page 278 and 279: AREA FEATURE 0 1 2 3 4 5 6 7 8 9•
Page 284 and 285: Clear (Continued)Storage (Continued
Page 286 and 287: Converting Thermocouple Characteris
Page 290 and 291: 4Input/Output Control (Continued)On
Page 292 and 293: Loop Channel (Continued)Control Blo
Page 294 and 295: Pulse OutputDescription of 125Timer
Page 296 and 297: Storage ProtectBit (S) 10Bit Light
Page 298 and 299: 1053 Printer (Continued)Maximum Rat
Page 300 and 301: 1810 Disk Storage (Continued)Read/W
Page 302: Form GA26-5918-8Page Revised 10/1/7
Page 305: IBM Technical Newsletter File Numbe
Page 308 and 309: ^;``
Page 311 and 312: • READER'S COMMENT FORM•▪ IBM
Page 313 and 314: • READER'S COMMENT FORM• IBM 18
Page 315 and 316: • READER'S COMMENT FORM• IBM 18
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