processor MicroVAX CVAX Rigel NVAX section powerup and console 24 28 22 39 memory management 67 72 117 na specifier decode 160 50 60 na interrupts and 133 155 150 183 exceptions arithmetic, logical, 104 115 110 83 address variable bit field 79 87 98 95 control 106 82 76 61 multiply/divide 140 111 129 123 procedure call 83 153 153 87 miscellaneous 51 67 78 83 queue 98 113 93 84 operating system 246 286 326 408 character string 94 162 180 186 floating point 136 79 18 6 emulated 58 30 28 39 vector na na 35 14 virtual machine na na 1 na test support 20 na 54 na total 1599 1590 1728 1494 available 1600 1600 1728 1536