Xerox 560 Reference Manual

Table 3. Summary of Trap Locations (cont.)
Locations
PSWs
Dec.
Hex.
Function Mask Bit
Time
of Occurrence
Trap Condition Code
72 48
CALLl None
At instruction decode. Equal to R field of
CALL instruction.
73
49
CALL2
None At instruction decode.
Equal to R field of
CALL instruction.
74
4A
CALL3
None
At instruction decode. Equal to R field of
CALL instruction.
75
4B
CALL4
None
At instruction decode.
Equal to R field of
CALL instruction.
76 4C
Hardware error trap
None At time of basic processor detec- TCC1, 2, 3 = 0
tion (the PDFt flag wi II be set).
TCC4 = 0 if parity
error on genera I reg-
ister or internal con-
trol register.
TCC4 = 1 if other
hardware errors.
77
4D Instruction exception
None (The PDF
t
flag will be set.)
Set TCC3 if MMC con-
trap
figuration illegal;
set TCC = X·C· if trap
or interrupt sequence
with illegal instruction;
set TCC = X·F· if trap
or interrupt sequence
and processor detected
fault;
set TCC4 if invalid
register designation
(odd register on AD,
SD, FAL,
FSL, FML,
FDL,
TBS, TTBS, EBS,
and register 0 on EBS).
78
4E
Reserved
79
4F
Reserved
80
50
Power on
Interruptible point.
81 51 Power off
Interruptible point.
tSee IIProcessor Detected Faults
ll
, later in this chapter.
38 Trap System

Xerox 560 Specifications

General

Brand	Xerox
Model	560
Category	Printer
Language	English