What hardware does 5th Edition Unix support?
[Answered by: Warren Toomey wkt@tuhs.org] I’ve only ever seen V5 distributed as RK05 disk images, and we don’t have the manuals so it’s impossible to tell if it was distributed like this, as tapes, or both. Dennis Ritchie says that V5 isn’t too much different from V6, and that most of the V6 manuals can be used for V5. The V5 in the archive, from Dennis, expects an 11/40-style machine: 18-bit addressing with kernel and user modes and EIS, and around 40Kw of memory. You will need a line-frequency clock or a real-time clock (KW11-L). There is support for 11/45-style machines with supervisor mode in sys/conf; however, split I/D is actually used. Floating point is required to run some programs; this is FP11-B only. The V5 kernel as distributed supports the following devices (quoted from the sources in sys/dmr): DR11C, DC-11, DH-11, DM11-B, DN-11, DP-11, KL/DL-11, LP-11, PC-11, RS11, RK05, RP03, TC-11, TM11, VT01. The following devices have boot code written for them: RK03/05, rp, rk. I’ve
