For reference, here's a spreadsheet (ASCIIfied) I made a few months ago summarizing the various supported devices under RSX and RT-11 and their support under the two most popular emulators. DU can be any size; I only include it below to note how certain common (but smaller) disks are implemented, especially on the Pro 300 series of PDP-11-based personal computers. A B C D E F G H I 1 Device Table for DEC Operating Systems 2 Full Have Driver For: Supported By: Size: 3 Abbr. Name RT-11? RSX-11? E11 V2.x? Supnik? Bytes Blocks Comments 4 Disks & Block-Oriented Tapes 5 DB RP04/5 no 5.1C? yes? no* yes (RP) 87960576 171798 88 MB 6 DB RP06 no 5.1C? yes? no* yes (RP) 1.74E+08 340670 176 MB 7 DD TU58 DTII yes yes? no? no 262144 512 DECtape 8 DF RF11/RS11 yes yes? V2.1 only no 524288 1024 E11 RF/DF 9 DK RK02 ? ? yes no 1228800 2400 E11 RK/DK 10 DK RK05/05f yes yes yes yes (RK) 2457600 4800 E11 RK/DK 11 DM RK06 yes yes yes no 13888512 27126 12 DM RK07 yes yes yes no 27540480 53790 13 DL RL02 yes yes yes yes (RL) 5242880 10240 14 DL RL02 yes yes yes yes (RL) 10485760 20480 15 DP RP02 yes yes? V2.1 only no 20480000 40000 not RP07 16 DP RP03 yes yes? (size)* no 40960000 80000 not RP07 17 DR RM02/03 ? yes? (size)* yes (RP) 67420160 131680 67 MB 18 DR RM05 ? yes? (size)* yes (RP) 2.56E+08 500384 256 MB 19 DR RM80 ? yes? (size)* yes (RP) 1.24E+08 242606 124 MB 20 DR RP07 no? yes? (size)* yes (RP) 5.16E+08 1008000 516 MB 21 DS RH70/RS03 yes yes? yes no 524288 1024 22 DS RH70/RS04 yes yes? yes no 1048576 2048 23 DT TU56 DT yes yes? yes no DECtape 24 DU RA80 ? yes? V2.1*only no 1.21E+08 236964 25 DU RA81 ? yes? V2.1*only no 4.56E+08 891072 26 DU RX33 yes yes V2.1 only no 1228800 2400 5¬'' HD diskette 27 DU RX50 (DZ) yes** yes** V2.1 only no 409600 800 DSC support? 28 DU RD51 (DW) yes** yes** V2.1 only no 10027008 19584 or 19519 POS 29 DU RD52 (DW) yes** yes** V2.1 only no 30965760 60480 DSC support? 30 DX RX01 yes yes yes yes (RX) 252928 494 31 DY RX02 yes yes yes no 505856 988 32 Other Tapes 33 MM TU77 etc. ? yes MM0 yes no NA NA 34 MS TS11 ? yes? V2.1 only no NA NA 35 MT TU10 etc yes TM11 yes yes yes (TM) NA NA use MM0: 36 TK50 yes? yes yes? no ÷94 MB ÷192512 37 MU MSCP tape ? yes V2.1 only no NA NA 38 E11 V2.x Limits 39 (SHOW HD:/DU: gives blks) V2.0 highest 32571392 63616 31.0625 40 V2.1 only 32571393 63616+ 31.0625 41 V2.1: 983040 1920 V2.1 highest 33554432 65536 32 42 Bytes Blocks More Too high 33554433 65536+ 32 43 44 *Too big for E11 Demo. E11 V2.1 also supports the RC11 = ? 45 **Pro3xx bootable DU devices (DW, DZ) won't currently boot under emulator. 46 47 E11 Emulator release dates: E11 V1.0 14-Nov-1994 (RL,RK,RX01/02 only); 48 E11 V1.1 22-Mar-1995; 49 E11 V2.0 10-Nov-1997; V2.1 04-Apr-1999 (LFN support, more devices) 50 51 Supnik Simulator: PDP11 V2.3 (magtape format changed from 16-bit recsize,record .even to 32-bit recsize,record,32-bit recsize) 52 V2.3a 1997 (bad blk table on disks, boot magtape, RM/RP fixed but still abstract) 53 (Parentheses in "supported" column refer to mnemonic to use when attaching (mounting) from simulator). 54 55 05-Jun-1999