IBM 1620 1 Manual page 97

Page
Page
Input/Output Instructions .......................... 39
Printer Check light ................................ 58
Input/Output Lights .............................. 61
Program Alteration and Data Entry .. . . . . . . . . . . . . . . . .. 65
I/O Check Switch ................................. 58
Program Control Instructions ........................ 51
I/O Codes ....................................... 39
Program Entry from Paper Tape .................... 64
Insert Key and Light .............................. 56
Program Entry from Typewriter ..................... 64
Instant Stop/SCE key ............................. 56
Program Instructions ............................... 12
Instruction and Execute Cycle Lights ............... 61
Program Load Routines, Appendix G ................. 89
Instruction Format ................................ 7
Program Switches .......................... 59, 57, 32
Instruction Summary, Appendix A ................... 76
Program Testing .... . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .. 67
Instructions ....................................... 7
Punch/Disk Interlock Light, 1620 Console ............ 56
Internal Data Transmission ......................... 73
PR-l ......................................... 73, 79
Internal Data Transmission Instructions ............... 34
PR-2 ......................................... 73, 79
Interrupt Mode light ............................... 61
PR-3 ......................................... 73, 79
IR-l .......................................... 67, 79
IR-2 ............................................. 79
Q
Address .................................. 7, 66, 82
IR-3 ............................................. 79
IR-4 ............................................. 79
Read Alphamerically, Instruction .................... 41
Last Card indicator ................................ 32
LC light (Last Card) ............................... 61
Read Check indicator ........................... 32, 39
Read Check Light, 1620 Console .................... 58
Read Disk instruction .............................. 49
Load Dividend ................................... 17
Load Dividend Immediate .......................... 18
Read Disk/WLRC instruction ....................... 45
Read Disk Track instruction ........................ 49
Magnetic Core Storage ............................. 4
Mantissa and Exponent Analysis ..................... 27
MARS Display Selector switch ...................... 29
MARS Check Light ................................ 58
Mask light ............. . . . . . . . . . . . . . . . . . . . . . . . . . .. 61
MBR-Even indicator ...................... 5, 32, 58, 59
MBR-Odd indicator ...................... 5, 32, 58, 59
Memory Address Register (MAR) .................... 60
Memory Buffer Register ............................ 79
Memory Data Register ............................. 59
Move Flag ....................................... 36
Multiplier/Quotient Register ..................... 59, 79
Multiply Immediate instruction ...................... 16
Multiply instruction ............................. 15, 70
Multiply Table, Appendix B ........................ 78
Read Disk Track/WLRC instruction. .. . . .. . . . . . . . . . .. 48
Read Numerically, Instruction ....................... 39
Reader No Feed Light, 1620 Console ................ 56
Read-Only Flag ................................... 44
RECOMP light (Recomplement) ..................... ·61
Record .. , ........... , .......................... , . 4
Record Marks ...................................... 4
Release key ....................................... 56
Reset Core Storage to Zeros ........................ 66
Reset key ........................................ 56
Save Key and Save Light ........................... 56
Sector Address .................................... 43
Sector Count ..................................... 44
Seek Complete Indicator ........................... 45
Seek Disk, operation ............................... 45
Seek instruction ................................... 45
No Operation instruction ........................... 51
Numerical Blank .................................. 4
Set Flag instruction ................................ 51
Sign Analysis ..................................... 13
Numerical Mode .................................. 6
Significance of P and Q Addresses .......... . . . . . . . . .. 82
Splicing Tape .................................... 86
Op Code......................................... 7
Start key ......................................... 55
Operation Register .............................. 59, 67
Start-Stop Key Light .............................. 55
Operand Registers ................................. 29
Stop/SIE key .................................... 56
Operator Switches, Keys, and Lights ................. 55
Storage Register Functions, Appendix C .............. 79
OR-l ......................................... 67, 79
Stored Program Concept ........................... 7
OR-2 ......................................... 67, 79
Subtract Immediate instruction ...................... 15
OR-3 ......................................... 73, 79
Subtract instruction ............................. 15, 70
OR-4 ......................................... 29, 79
Summary of Automatic Division Rules ................ 22
OR-5 ......................................... 29, 79
Output Data Flow ................................ 74
Overflow Check Switch ............................ 58
Table Look-Up Arithmetic .......................... 13
Tape Punch ..................................... 1, 2
Overflow Indicators ................................ 58
Tape Specifications ................................ 86
Tape Splicing - Appendix F ........................ 86
P Address .................................. 7, 66, 82
Thermal light ..................................... 57
Paper Tape ....................................... 86
Transfer Numerical Fill ............................ 38
Paper Tape and Paper Tape Code .................. 86
Transfer Numerical Strip ........................... 37
Paper Tape Load (Program) Routine ................. 89 Transmit Digit Immediate instruction ................. 34
Paper Tape Reader, 1621 ........................ 1, 2
Transmit Digit instruction .......................... 34
Parity Check Indicators ............................ 58
Transmit Field Immediate instruction ................. 34
Parity Checking, Console Typewriter ................. 52
Transmit Field instruction .......................... 34
Plus 2 light ...................................... 61
Transmit Floating ................................. 27
Power On/Off switch .............................. 55
Transmit Record instruction ......................... 35
Power Ready Light ................................ 55
Typewriter Input .................................. 52
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