IBM 2025 Maintenance Manual page 264

Processing unit
Table of Contents

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2540 Readout Area (160 Bytes of
Column Form)
1-15
30XX, 2540 Reader Translate Table
1-16
Al Gate (Hammer Driver Gate) (Location)
6-12
Backup Locations, Address
Bad Waveforms
1-68
LS Address Line Reset Delay Bad--
Zero Delay
1-139
Read Line Set too Early--Zero
Delay
1-139
Basic Storage Cell (LS)
BCD-to-CM6 Conversion
BCHK, Checksum Routine
BCPL Routine
2-7
A-3
1-73
2-5
Bias Constant, Storage, (1400
Compatibility)
1-29
Bisynchronous Control Character Chart 1-80
Bleeder Resistors Rl8 to R29(Location) 6-12
Block Feed Check Jumper
4-13
Blowers
1-129
Branch on Condition Code (Word Type
6 or 7)
1-42
Branch on Mask Word (Word Type 5)
1-41
Branch Unconditional Word (Word Type 4) 1-40
Buffer Adjustment, 1403
4-12
Buffer Load Microloop, 1403
2-3
Bl-TBl (Location)
6-4, 6-5
B2-TB1 (Location)
6-13
Carriage Settling Delay (1403)
4-12
CAW, Channel Address Word
1-78
CBI (Location)
6-5
CCW, Channel Command Word
1-78
CE Display Cable (Model 20 Mode)
1-127
CE Panel
1-128
CE Test Panel Hubs
1-128
CE Test Panel Hubs (Model 20 Mode)
1-127
CE Test Panel (Location)
6-9
CE Trap
1-128
CE Trap (Model 20 Mode)
1-127
Cell, Basic Storage (LS)
A-3
Chain Arrangements for System/360
(Printout Representation)
1-86
Chaining Check
1-118
Channel
Address Word (CAW)
1-78
Checks
1-116
Command and Address Formats
1-77
Command Codes
1-77
Command Word (CCW)
1-78
Connector Location
6-3
Control Check Flowchart
2-44
Control Check Logout
2-43
Control Check, Machine Check and
1-114
Control Information, Selector
Channel
2-42
Device Addressing
2-37
Error Handling Philosophy and
Logout
2-42
External Facilities
2-46, 2-47
Handload Routine
2-47
Logout
2-43
Mode
1-44
Mode (CPU to EXT)
1-61
Mode (EXT to CPU)
1-60
Status Byte
2-43
Status Word (CSW)
1-78
X-2
(7/69)
Channel UCW Allocations
2-37
UCW Format
1-79
UCW Formulation
2-39, 2-40
Channel-0 UCW Format (Standard I/O
Interface)
2-41
Channel 9 (1403)
Check
2-20
Channel Control
1-114
Coil Protect
2-17, 2-19
Control Switch
1-116
Forms (1403)
2-18
Hammer
2-17
Interface Control
Machine
1-114
1-115
Sync (1403)
2-17, 2-19
Checks, Adjustments, and Removals
Checks
CPU Attachment
1-116
CPU Hardware
1-116
4-1
CPU (Indicators) (See Indicators,
CPU Checks)
CPU Microprogram
Reader, During CSL
System
1-118
1403
2-16
Checksum Routine--BCHK
CHNL (Channel)
1-123
1-116
2-5
2-5
CHNL (Channel), Indicator
Circuit Breakers, DC Module
1-123
5-5
Clock
CPU
4-1
Off (Indicator)
1403 Attachment
2540 Attachment
1-123
4-10
4-8
CM6, Conversion to
Code Conversions
Coil-Protect
BCD
1-70
1-73
Check
2-17, 2-19
Relay, Replacement
Singleshot (1403)
Command
3-1
4-12
Byte Description, 1403
Codes, Channel
1-77
Reject (PR-KB)
2-13
1-85
Reject, 1403
2-18
Word, Channel (CCW)
1-78
Commands
Integrated File
PR-KB
2-10
1-104
1403 Printer Attachment
2311/DAC
2-23
Communications
Adapter, Integrated
Connector Location
Mode
1-44
Mode (CPU to EXT)
Mode (EXT to CPU)
Power Group
5-1
1-80
6-3
1-57
1-55
2-16
Compatibility Feature 1401/1460 and
1440
1-20, 1-126
Condition Code Settings
1-75
Configuration, System--CSL
2-6
Console Inquiry Program
2-2
2-1
Console and Maintenance Features
Console Printer-Keyboard Mode (CPU to
EXT)
1-55
Console Printer-Keyboard Mode (EXT to
CPU)
1-54

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