m_thompson
Veteran Member
The RICM moved the Display/Lab area into a new rental area that is 50% bigger, so we had room for some more DEC equipment. Last year the estate of Spider Boardman, a PDP-10 operating system wizard, donated an 11/35 that was cobbled together from lots of unrelated parts. I thought that machine might be an interesting project, mostly because it had a VT11 board set in it and a VR14 display. My plan is to use a real 11/35 chassis that we have for the processor, because the current BA-11 Unibus chassis doesn't have any provisions for mounting a front panel.
This should be enough hardware to run Lunar Lander from a GT40. I might try modifying the source code to use the LK11 Button Box instead of the light pen on the VR14 to control the lander.
This system should also be able to run UNIX V2.9 if we add some RK05 or RL02 disks. I think RL02 drives would be less problematic.
Pictures of the machine are here: https://www.ricomputermuseum.org/collections-gallery/equipment/dec-pdp-1135-2
Comments and suggestions are welcome.
The installed boards are:
This should be enough hardware to run Lunar Lander from a GT40. I might try modifying the source code to use the LK11 Button Box instead of the light pen on the VR14 to control the lander.
This system should also be able to run UNIX V2.9 if we add some RK05 or RL02 disks. I think RL02 drives would be less problematic.
Pictures of the machine are here: https://www.ricomputermuseum.org/collections-gallery/equipment/dec-pdp-1135-2
Comments and suggestions are welcome.
The installed boards are:
- M7239 KE11-F FIS Option
- M7238 KE11-E EIS Option
- M7232 KD11-A U Word
M7237 KJ11-A Stack Limit
M787 Kw11-l Line Time Clock
- M7231 KD11-A Data Path
- M7233 KD11-A IR Decode
- M7235 KD11-A Status
- M7234 KD11-A Timing
- M7236 KT11-D Memory Management Option
- M981 Unibus Jumper
M7800 DL11 Asynchronous Line Interface Board
- M981 Unibus Jumper
- M7891-DC MS11-LD 128kW X 18 bits (256KB) MOS Memory
- M7800 DL11 Asynchronous Line Interface Board
- M7060 LK10 VT48 push button control for the LK11 Button Box
- M7860 DR11-C M786+M105+M7821; general device interface
- M8256 RX211 RX02 floppy disk drive controller
- M9202 Unibus Jumper
M8730 KW11-C Calendar and clock module
- M9202 Unibus Jumper
M9312 Bootstrap/Terminator DY, RL02, and ASR33/PC05 boot ROMs
- M7014 VT11 Unibus Controller and Bootstrap for VT40
- A320 VT11 Vector and Character generators, and D-A convertors
- M7013 VT11 Vector Generator and Character Generator Control for VT40