Xerox 550 Reference Manual page 5

CH
CW
CD
CS
CLR
CLM
Logical Instructions
OR
EOR
AND
Shift Instructions
S
Floating-Point Shift
SF
Convers i on Instruc t ions
CVA
CVS
Floating-Point Arithmetic Instructions
Floating-Point Numbers
Floating-Point Add and Subtract
Floating-Point Multiply and Divide
Condition Codes for Floating- Point
Instructions
FAS
FAL
FSS
FSL
FMS
FML
FDS
FDL
Push-Down Instructions (Non-Privi leged)
Stack Pointer Doubleword (SPD)
Push-Down Condition Code Settings
PSW
PLW
PSM
PLM
MSP
Push-Down Instructions (Privileged)
Status Stack Pointer Doubleword
PSS
PLS
I='VOl""II ... 'O
/1l ... ,...,It"'l_~
1_,..J. .... _ ... : __
r
_ " " ..... "'1_/ Loll"""."", • .llloJlIIV ....... ,VII.)
Nonallowed Operation Trap During
Execution of Branch Instruction
EXU
BCS
BCR
BIR
BDR
BAL
CALL Instructions
CAll
CAL2
CAL3
CAL4
Control Instructions
Program Status Words
LPSD
XPSD
LRP
Mly",C
iv
66
67
67
67
67
68
68
68
68
69
69
69
71
71
72
73
73
73
74
75
77
77
77
77
78
78
79
79
79
79
79
79
80
81
81
82
83
83
84
84
87
88
00
UI'
90
90
91
91
91
91
92
92
92
92
92
93
93
93
93
94
96
97
Loading the Memory Map 98
LMAP 98
LMAPRE 98
Loading the Access Protection Controls 98
Memory Write Protection Locks 99
LLOCKS 99
LLOCKSE 99
Interrupti on of MMC 100
Memory Access Traps by MMC Instruction _ _ 100
LRA 100
LMS 101
WAIT 103
RD 103
Read Direct, Internal Basic Processor
Control (Mode 0) 104
Read Direct, Interrupt Control (Mode 1} _ _ 105
Read Direct (Mode 9) 105
WD 1W
Write Direct, Internal Basic Processor
Control (Mode 0) 108
Write Direct, Interrupt Control (Mode 1} _ _ 109
Input/Output Instructions 110
Overall Characteristics 110
I/O Status Information 110
SIO 118
no
119
TDV 120
HIO 121
RIO 122
POLP 122
POLR 122
AIO 123
4. INPUT/OUTPUT OPERATIONS 125
External DIO Interface 125
Multiplexor Input/Output Processor (MIOP) _ _ 125
Device Controllers 125
Input/Output Processor (lOP) Fundamentals _ _ 126
Command List 126
Operational IOCD 126
1/0 Opera ti on Phases 131
Preparation Phase 131
Initiation Phase 131
Fetching Phase 131
Executi on Phase 132
Termination Phase 134
5. OPERATIONAL CONTROL 135
External Control Subsystem _ _ _ _ _ _ _ _ 135
Centra I i zed System Control 135
Controi Console Devices 135
Control Commands 136
Operator Control Commands 136
ZCI 137
ZcSSW 137
ZCSS# 137
ZCLDN###lf ___________ 137