We recently managed to (finally!) get our HP 2116 machines out of 'deep store' and into the light of day, and some initial cleaning work was done on the panels earlier. I did a quick inventory: 2116B 2116C 2160A (PSU) 2161A (PSU) 2748A (tape reader) HP1016C (two - 512 track drum) One of our guys managed to flip the front door catches (the keys for the machines are long-gone), so I was able to take a board listing too: 2116B: slot board 1 pwr fail / AR 10 sense amplifier 11 sense amplifier 12 sense amplifier 13 sense amplifier 14 driver switch 15 driver switch 16 inhibit driver 18 inhibit driver 20 DML 22 sense amplifier 101 A101 102 A102-105 103 A102-105 104 A102-105 106 A106 107 A107 108 A108 110 EAU logic 111 EAU timing 116 DMA word count 117 DMA word count 118 DMA address enc. 119 DMA control 120 DMA packer 201 A201 202 central interr. 211 I/O multiplexor 214 tape reader 216 I/O multiplexor 218 buss loader 2116C: slot board 101 A101 102 A102-105 103 A102-105 104 A102-105 105 A102-105 106 A106 107 A107 201 A201 205 A108 206 MDB / A13 207 power fail 208 power fail 209 power fail 210 power fail 211 power fail 212 inhibit driver / A4,6,16,18 213 inhibit driver / A4,6,16,18 214 inhibit driver / A4,6,16,18 215 inhibit driver / A4,6,16,18 216 MMD / A2 217 sense amplifier 218 MMD / A2 219 driver switch / A8,9,14,15 220 MDB / A13 things found kicking around in the 2116C case: Core stack with connectors labeled A1, A2, A3, A6 (made by Ferroxcube corporation) Core stack with connectors labeled A1, A2, A3, A6 (made by Ampex) Core stack with connectors labeled A1, A2, A3, A4, A6, A7 (international scientific) 'short' board, HP assy. 02116-8015 'short' board, HP assy. 02160-60031 power fail board (identical to the ones in card slots) unknown full-size board, HP 1150-1198. Most of the boards sitting in the card slots are just loose, i.e. not plugged into the backplane, so there's no guarantee they're in the right place (the bottom row of the 2116C machine looks particularly disorganised). Anyone familiar with the systems know if this is anything like two machines' worth though? Or is it some sort of dual-cabinet system, and one crate was likely just I/O with the other for CPU? Nice to finally see inside them anyway, as for all we knew they could have been completely stripped out inside..