Cray CRAY-1 - 176 Ixk Transmit (VL) Words from Memory to VI Elements; Starting at Memory Address (Ao) and Incrementing; By (Ak) for Successive Addresses; 177 Xjk Transmit (VL) Words from Vj Elements to Memory

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176ixk
177xjk
Transmit (VL) words from memory to Vi elements
starting at memory address (Ao) and incrementing
by (Ak) for successive addresses
Transmit (VL) words from Vj elements to memory
starting at memory address (Ao) and incrementing
by (Ak) for successive addresses
These instructions transfer blocks of data between V registers and memory.
The 176 instruction transfers data from memory to elements of register Vi.
The 177 instruction transfers data from elements of register Vj to memory.
Register elements begin with zero and are incremented by one for each
transfer. Memory addresses begin with (Ao) and are incremented by the
contents of
Ak. Ak contains a signed integer which is added to the
address of the current
word to obtain the address of the next word. Ak
may specify either a positive or negative increment allowing both forwarr
and backward streams of reference.
The number of words transferred is determined by the contents of the VL
register.
Hold issue conditions
034 - 037 in process
Exchange in process
Ao reserved
Ak reserved where k = 1 through 7
Block sequence flag set (034 - 037, 176, 177)
Scalar reference
Rank B data valid
Fetch request in last clock period
For 176, vector register i reserved
For 177, vector register j reserved
I/O memory request
2240004
4-73
E