Control Data Cyber 170 State Hardware Reference Manual page 133

CP Illegal Instructions
CP Illegal lnstructions
The illegal instructions (table 4-14) cause an exchange to CYBER 170 monitor
mode, when in CYBER 170 job
mode, and cause a jump to executive state when
in
CYBER 170 monitor mode.
Table 4-14. CP Illegal Instructions
Opcode Format Instruction Mnemonic
OOxxx Error exit to MA or interrupt to
executive mode
017
j K
Illegal instruction (Trap 180) RT
014
jK
Read one word from UFM to
Xj
w
xk
015 j K Write one word from Xj to UEM WXj Xk
Error Exit
00- Error exit to MA when CYBER 17
MF clear
Interrupt to executive
mode when CYBER 170 MF set
This instruction causes an illegal instruction error exit. CYBER 170 MF is the
hardware monitor flag. Refer to Illegal Instructions in chapter 5 .
Illegal l nstruction
017jk
-
Illegal Instruction
Refer to Illegal Instructions in chapter
5.