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IBM Technical Newsletter Unit 1800-01Base Publ. No. GA26 -5918 -8This Newsletter No. GN26-0282Date January 31, 1972Previous Newsletter Nos. GN26-0263GN26-0269IBM 1800 FUNCTIONAL CHARACTERISTICS© IBM Corp. 1966, 1969This Technical Newsletter provides replacement pages for the subject publication.Pages to be inserted and/or removed are listed below.77, 78229, 230231 through 238 (text rearrangement only)A technical change to the text or to an illustration is indicated by a vertical lineto the left of the change. An editorial change or text rearrangement is not indicated.Summary of AmendmentsProvide additional information regarding increment timer accuracy.Note: Please file this cover letter at the back of the manual to provide a recordof changes.IBM Corporation, Product Publications, Dept. G24, San Jose, California 95114PRINTED IN U.S.A.
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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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Read data request causes the adapte
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If a 1053 Printer is addressed by t
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specific 16-word block within the c
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LCCBWord1Address Word(Active Frame)
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channel active is interrogated. If
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Form GA26-5918-8Page Revised 10/1/7
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AREA STATION LOCAL I/O TRANSACTION
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Form GA26-5918-8Page Revised 10/1/7
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244Form GA26-5918-8Page Added 10/1/
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Page 258 and 259: Form GA26-5918-8Page Revised 10/1/7
Page 262 and 263: When all segments are bypassed modi
Page 264 and 265: 0. It can occur only during a read
Page 266 and 267: Page of GA26-5918-8Revised July 14,
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 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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