This file can be edited with VPEdit. VPHost 3.16 claims to use it to define auxiliary hull information, but this seems not be true. This file defines special devices. So far, this mechanism was never implemented completely. Just for curiosity, here it is.
The file consists of a sequence of records, each of which is 255 bytes long and has the following format:
+0 30 BYTEs Name of device +30 4 BYTEs Short name of device +34 WORD Engine tech required +36 WORD Hull tech required +38 WORD Beam tech required +40 WORD Torp tech required +42 WORD Tritanium required +44 WORD Duranium required +46 WORD Molybdenum required +48 WORD Money required +50 WORD Device kind 1 Alchemy device 2 Refinery device 3 Torpedo building device 4 Fighter building device 5 Gambling device 6 Ram-scoop device 7 Terraform: heating device 8 Terraform: cooling device 9 Ship repair device 10 Refit device 11 Bioscanner device 12 Industry scanner device 13 Scanner device 14 Dark sense 15 Minefield scanner 16 Deep space scanner 17 Cloaking device 18 Anti-cloak device 21 Gravitonic accelerator 22 Hyperdrive 23 Chunnel device 31 Super-spy device 32 Rob-ship device 33 Pillage device 34 RGA device 35 Combat device 36 Imperial assault device 37 Hiss device 38 Factory feed 41 Mine scoop device 42 Mine lay device 43 Web mine lay device 44 Mine sweep device 45 Fighter mine sweep device 46 Glory device 51 Terraform: optimum device (heat or cool?) 52 Native lifeform assimulator 53 Robot clan construction device 54 Colonist cloning device 55 Ground attack air supply 56 Terraform: ore condenser 57 Position jammer device 58 Chameleon device 59 Entertainment device 64 Camouflage scanner +52 WORD ? +54 10 WORDs Fuel usage, for each warp factor +74 10 WORDs "Fuel move", times 10 (i.e. 15 means 1.5) +94 10 WORDs Fuel usage, mass related, for each warp factor +114 10 WORDs Supply usage, for each warp factor +134 10 WORDs Maximum range, for each warp factor +154 10 WORDs ? +174 WORD Number of engines (required?) +176 WORD Cargo space (occupied by device?) +178 2 WORDs ? +182 WORD Maximum damage +184 WORD Minimum engine tech +186 WORD ? +188 WORD Standard (all applicable ships have it), 0 or 1 +190 WORD Device is automatic, 0 or 1 +192 WORD Shareware, 0 or 1 +194 2 WORDs ? +198 WORD Racial orders: bitfield. Bit 1 = race 1, bit 2 = race 2, ... Value 0 means 'all'. +200 WORD Racial usage: bitfield. +202 3 BYTEs 'Trigger' FCode +205 3 BYTEs 'Enable' FCode +208 3 BYTEs 'Disable' FCode +211 WORD Minimum warp +213 WORD Maximum warp +215 3 WORDs ? +221 WORD Mass (of device?) +223 16 WORDs ?