IBM System/370 - Page 22

Section 2 Contents
Section 2: General Information .: •.•••..••••.•••••••••.•••••••.••.•.• 2·1
Machine Instructions ................•...................••...• 2·1
Floating-Point Instructions
.................••..........•..... 2·3 II
Extended Mnemonic Instructions ......•.......................... 2·3
Edit and Edmk Pattern Characters . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . • . . 2·3
Condition Codes . . . . . • . . . . . . . . . . . . . . . • . . . . . . . . . • . . . . . . . . • • • • . 2-4
CNOP Alignment .••......•.................................. 2-4
Assembler Instructions ....•........•...•....•.....•...••.....• 2·5
Summary of Constants ......................•...•............. 2·5
I/O Command Codes . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . • . . . . . . . . . . 2-6
Channels .•........•.........•..............•......•.... 2-6
Card Readers/Card Punches . . . • . . . . . . . . . . . . . . . . . . . • . . . . • • • • . . . 2-6
Console Printers ..•..•...............•..............•.•... 2-6
Magnetic Tapes . . . . • . . . . . . . . . . . . . . . . • . . . . . . . . . . . . . . . • .. . . . . 2-6
Direct Access Storage Devices ............................•..•. 2·7
Code Translation Table ...... ;................................. 2-8
ANSI.,..Defined Printer Control Characters ....................••..... .2·11
Machine Instruction Formats .•............••....•...•.•.•..•.••. 2·12
Control Registers ....•.•....•.•.....•.......•..............•. 2·12
Program Status Word (BC Mode) •......•..•.....•••...•......•... 2·13
Program Status Word (EC Mode) ...........•.•....•.•.••...••.... 2-13
Channel Command Word •......•....•.•............•••.....•... 2-13
Channel Status Word (hex 40) ......••............................ 2-13
Program Interruption Codes ••......•.................•.•..•••..• 2-13
Fixed Storage locations ..•....•...........................•... 2-14
limited Channel logout (hex BO) ................................. 2-14
Machine Check Interruption Code (hex E8) ........................•.. 2-14
Dynamic Address
Translation ......................•....•....••.. 2-15
Virtual (logical) Address Format ............................... 2-15
Segment Table Entry ..........•.....................•....•. 2-15
Page
Table Entry .....•....................... , ............ 2-15
Hexadecimal and Decimal Conversion •.....••....................... 2-15
Powers of 2 and 16 ........•....•....•.....................••. 2-15