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Field Engineering
Handbook




System/360 Model 30
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Field Engineering Handbook
System/360 Model 30
Address comments concerning the contents of this publication to:
IBM Corporation, FE Technical Operations, Department 793,
Endicott, New York 13760
CONTENTS

M2I GATE AND SELECTION LOGIC.
DIODE PACK - PIN 2391181. . . 2
DIODE LAYOUT - 32K ARRANGEMENT 2
ORIENTATION OF DIODE PACK (BY DIODE iI). 3
POWER RESISTOR LOCA TION. . . . . . 3
ARRAY LAYOUT . . . . . . . . . . . 4
MAIN ADDRESS REGISTER LAYOUT (M&N) 5
PLUG CHART - B1 BOARD . . 6
PLUG CHART - B2 BOARD . . .
M2 MAIN STORAGE ADDRESSING . .
ROS ADDRESSING BLOCK DIAGRAM 10
ROS ADDRESSING - CARD POSITIONS 10
ROS PARITY CHECK BITS 12
LOCAL STORAGE - CPU . . . . . 13


I
FORMA T FOR K ADDRESSABLE BYTES 13
TRACK FORMATS. . . . . . . . . . . 14
BETA GAP BIT CONFIGURATION. . . . . 15
HA AND ALPHA GAP BIT CONFIGURATION 16
PROGRAM STATUS WORD. . 17
CHANNEL STATUS WORD. . 18
TRAPS IN PRIORITY ORDER. 19
ROS ADDRESS . . . . . . 19
READ ONLY STORAGE CONTROL. 20
S-Reg., MC-Reg., H-Reg., ALU Controls 25
Micro-Word Format. . . . . 26
ROS Control Field Description. 26
ROS CONTROL FIELD CHART. . 27
SYSTEM/360 MOD 30 DATA FLOW 28
MULTIPLEX CHANNEL MICRO-PROGRAM
DATA FLOW/TIMING . . . . . . 29
ADDRESSING OF UCW - I/O FORMAT 30
UNIT CONTROL WORD. . . . . . 31
MULTIPLEX CHANNEL CONTROL . 31
STATUS-IN AND SERVICE-IN BRANCHES 32
SELECTOR CHANNEL CONTROL. 32
CPU CHANNEL LOGOUT . . . 35
MPX AND SX MICRO P!l.OGRAM . 36
1050 INTERFACE REGISTERS . . 37
REGISTER DISPLAY AND FUNCTION 38
IBM 1407 CONSOLE INQUIRY STATION
AND IBM 1447 CONSOLE MODELS 2 & 3 40
1401 OPERATION CODES. 41
1400 d MODIFIERS. . . . . 42
d Characters For Branch . 42
d Characters For Branch If
Wordmark Or Zone . . . 43
d Characters For Form Control 43
BCD TO CM6 CONVERSION - 1401 CODE TO
SYSTEM/360 CODE . . . . . . . 44
SUGGESTED STANDARD ADDRESSES . . . 45
CONTENTS


1400 COMPATIBILITY - PROGRAMMED AND
ERROR STOPS. .