Cray CRAY-1 - 072 Ixx Transmit (RTC) to si; 073 Ixx Transmit (VM) to si; 074 Ijk Transmit (Tjk) to si; 075 Ijk Transmit (Si) to Tjk

r----------------------------------------------------------------------
072ixx
073ixx
074ijk
075ijk
Transmit (RTC) to Si
Transmit (VM) to Si
Transmit (Tjk) to Si
Transmit (Si) to Tjk
These instructions transmit register values to Si except for instruction
075 which transmits (Si) to Tjk.
The 072 instruction enters the 64-bit value of the real-time clock into
Si. The clock is incremented by one each clock period. The real-time
clock
is cleared by the operating system at system initialization and
can be reset only by the monitor through use of the 0014 instruction.
The 073 instruction enters the 64-bit value of the vector mask (VM)
register into Si. The VM register is usually read after having been set
by the 175 instruction.
The 074 instruction enters the contents of Tjk into Si.
The 075 instruction enters the contents of Si into Tjk.
Hold issue conditions
034 - 037 in process
Exchange in process
Si register access conflict (072, 073, and 074 only)
Si reserved
For 073 only:
175 in process, unit busy (VL) + 6 CPs
003 in process, unit busy 6 CPs
Execution time
Instruction issue 1
CP
For 072 through 074, Si ready 1 CP
For 075, Tjk ready 1 CP
Special cases
None
2240004
4-47
E