System Memory on CPU No. of Memory Slots Options MicroVAX I, 4 MB 4 2 MB MicroPDP 11/73 MicroVAX I, 4 MB 4 4 MB MicroPDP 11/73 MicroVAX II (!) 1 MB 2 4 MB MicroVAX II (!) 1 MB 2 8 MB MicroVAX 3100 (@) 4 MB 1 4 MB Models 10/10e/20/ 20e MicroVAX 3100 (@) 4 MB 1 8 MB Models 10/10e/20/ 20e MicroVAX 3100 (@) 4 MB 1 12 MB Models 10/10e/20/ 20e MicroVAX 3100 (@) 4 MB 1 16 MB Models 10/10e/20/ 20e MicroVAX 3100 8 3 Pairs 8 MB (2 x 4 MB Models 30/40 modules) MicroVAX 3100 Model 0 3 Pairs 8 MB (2 x 4 MB 8085 modules) MicroVAX 3100 Model 0 3 Pairs 32 MB (2 x 16 MB 80/85 modules) MicroVAX/VAXstation 0 2 Quads 16 MB (4 x 4 MB 3100 Model 90/95 modules) MicroVAX/VAXstation 0 2 Quads 64 MB (4 x 16 MB 3100 Model 90/95 modules) MicroVAX/VAXserver 4 MB 3 8 MB 3300/3400 MicroVAX/VAXserver 4 MB 3 16 MB 3300/3400 MicroVAX/VAXserver 4 MB 3 32 MB 3300/3400 MicroVAX/VAXserver 0 4 8 MB 3500/3600/3800/ 3900 MicroVAX/VAXserver 0 4 16 MB 3500/3600/3800/ 3900 MicroVAX/VAXserver 0 4 32 MB 3500/3600/3800/ 3900 VAXstation 3100 (@) 4 MB 1 4 MB Models 30/38/40/ 48 VAXstation 3100 (@) 4 MB 1 8 MB Models 30/38/40/ 48 VAXstation 3100 (@) 4 MB 1 12 MB Models 30/38/40/ 48 VAXstation 3100 (@) 4 MB 1 16 MB Models 30/38/40/ 48 VAXstation 3100 0 8 4 MB Model 76 VAXstation 3200 0 2 8 MB VAXstation 3200 0 2 16 MB VAXstation 3500 0 4 8 MB VAXstation 3500 0 4 16 MB VAXstation 4000 VLC 0 3 Pairs 8 MB (2 x 4 MB modules) VAXstation 4000 8 MB 3 Pairs 8 MB (2 x 4 MB Model 60 modules) VAXstation 4000 8 MB 3 Pairs 32 MB (2 x 16 MB Model 60 modules) VAXstation 4000 0 2 Quads 16 MB (4 x 4 MB Model 90 (##) modules) VAXstation 4000 0 2 Quads 64 MB (4 x 16 MB Model 90 (##) modules)
System Order No. Maximum System Capacity MicroVAX I, MSV11-QB 4 MB MicroPDP 11/73 MicroVAX I, MSV11-QC 4 MB MicroPDP 11/73 MicroVAX II (!) MS630-BB 16 MB MicroVAX II (!) MS630-CA 16 MB MicroVAX 3100 (@) MS42-AB 32 MB Models 10/10e/20/ 20e MicroVAX 3100 (@) MS42-KA 32 MB Models 10/10e/20/ 20e MicroVAX 3100 (@) MS42-BA 32 MB Models 10/10e/20/ 20e MicroVAX 3100 (@) MS42-CA 32 MB Models 10/10e/20/ 20e MicroVAX 3100 MS44L-BA 32 MB Models 30/40 MicroVAX 3100 Model MS44L-BA 72 MB 8085 MicroVAX 3100 Model MS44-DA 72 MB 80/85 MicroVAX/VAXstation MS44L-BC 128 MB 3100 Model 90/95 MicroVAX/VAXstation MS44-DC 128 MB 3100 Model 90/95 MicroVAX/VAXserver MS650-BH 52 MB 3300/3400 MicroVAX/VAXserver MS650-BF 52 MB 3300/3400 MicroVAX/VAXserver MS650-BJ 52 MB 3300/3400 MicroVAX/VAXserver MS650-BH 64 MB 3500/3600/3800/ 3900 MicroVAX/VAXserver MS650-BF 64 MB 3500/3600/3800/ 3900 MicroVAX/VAXserver MS650-BJ 64 MB 3500/3600/3800/ 3900 VAXstation 3100 (@) MS42-AB 32 MB Models 30/38/40/ 48 VAXstation 3100 (@) MS42-KA 32 MB Models 30/38/40/ 48 VAXstation 3100 (@) MS42-BA 32 MB Models 30/38/40/ 48 VAXstation 3100 (@) MS42-CA 32 MB Models 30/38/40/ 48 VAXstation 3100 MS44-AA 32 MB Model 76 VAXstation 3200 MS650-BH 32 MB VAXstation 3200 MS650-BF 32 MB VAXstation 3500 MS650-BH 64 MB VAXstation 3500 MS650-BF 64 MB VAXstation 4000 VLC MS40-BA 24 MB VAXstation 4000 MS44L-BA 104 MB Model 60 VAXstation 4000 MS44-DA 104 MB Model 60 VAXstation 4000 MS44L-BC 128 MB Model 90 (##) VAXstation 4000 MS44-DC 128 MB Model 90 (##)
(#) The MS01-AA and MS01L-AB cannot be mixed in the system with the MS01-CA.
(^) The MS02L-AB cannot be mixed in the system with the MS02-CA.
(!) The 1 MB of memory on the CPU is disabled when two 8 MB modules are installed.
(@) Maximum system capacity is obtained by piggy-backing MS42-CA and MS42_BA together.
(^) The MS02L-AB cannot be mixed in the system with the MS02-CA.
(!) The 1 MB of memory on the CPU is disabled when two 8 MB modules are installed.
(##) VAXstation 4000 model 90 minimum memory config. is 16 MB.
(^^) 512 maximum memory can only be obtained by starting with 128 MB, otherwise, one memory must be removed.
(!!) Memory modules should be configured in one, two or four like-size modules.
(*) Upgrades from 32 and 64 MB available.