Cray CRAY-1 - Page 151

Hold issue conditions
034 - 037 in process
Exchange in process
Vi or Vk reserved
16x in process, unit busy (VL) + 4 CPs
For 160, 162, 164, and 166:
Sj reserved
For 161, 163, 165, and 167:
Vj reserved
Execution time
Instruction issue 1 CP
Vi ready 14 CPs if (VL) < 5
Vi ready (VL) + 9 CPs if (VL) > 5
Vj or Vk ready 5 CPS if (VL) s 5
Vj or Vk ready (VL) CPs if (VL) > 5
Unit
ready (VL) + 4 CPs
Chain slot ready 9 CPs
Special cases
(Sj) = 0 if j = 0
Arithmetic error allows a minimum of 21 CP + 2 parcels
and a maximum of (VL) + 20 CP + 2 parcels to issue
before
interrupt occurs if floating point error flag set.
2240004
4-65
E