ZYAAA-P3 English-language diagnostics and Optional for -A2 and -A3. Included in documentation on TK50 media DH-153Q7-AA. ZYAAA-P5 English-language diagnostics and documentation on RX50 media MSV11-PL 0.5-Mbyte MOS memory Maximum allowable memory is 4 Mbytes MSV11-QA 1-Mbyte MOS memory per system. Base Hardware System MSV11-QB 2-Mbyte MOS memory includes 1.5 Mbytes. RD31A-AB 20-Mbyte fixed-disk drive Choose only one. DECserver 90M -AB 42-Mbyte fixed-disk drive RD54-DA/DB 159-Mbyte tabletop disk drive Choose up to two. DECserver 90M-DA/DB 71-Mbyte tabletop disk drive RD52-DA/DB 31-Mbyte tabletop disk drive DECserver 90M-AA DECserver 90M extender module TK50-DA/DB 95-Mbyte tabletop tape drive Choose only one. TQl(50-AB TK50 controller DEQNA-M Ethernet interface Choose only one. CK-DEQNA-KB Cabinet kit rial lines on system is 26. The Base Hardware System (Step 1) includes two serial lines. This DECserver 90M leaves a 24 additional asynchronous serial lines to choose as options. DHV11-M 8 serial lines Choose up to three if no other VB Cabinet kit with no modem asynchronous options are selected. control, DECserver 90M signalling DHV11 is not currently supported on supporting 8 remote 25-pin RT-11, CTS-300, or MicroPower/Pascal-RT. connections DECserver 90M -M 8 serial lines Choose only one if no other asynchronous AB Cabinet kit with full modem options are selected. DECserver 90M is not control, RS232 signalling currently supported on supporting 8 DECserver 90M 25-pin connections RT-11, CTS-300, or DECserver 90M /Pascal-RT. on the bulkhead DHV11-M 8 serial lines Choose up to three if no other WB Cabinet kit with no modern asynchronous options are selected. control, DECserver 90M signalling DHV11 is not currently supported on supporting 8 remote MMJ RT-11, CTS-DECserver 90M, or MicroPower/Pascal-RT. DECserver 90M connections.