I was wondering if anyone has ever been able to build and use BSD 1 on Research Unix v7 (pdp-11)? I've installed the Keith Bostic tape, and I've been fighting the floating point and some other weird stuff.... I've configured my PDP-11 like this: set cpu 11/70 set cpu 2M set cpu idle set rp0 rp06 att rp0 rp06-0.disk att tm0 xx.tap boot tm0 but I'm lost on the install guide, as it mentions for floating point... Floating Point UNIX only supports (and really expects to have) the FP11-B/C floating point unit. For machines without this hardware, there is a user subroutine available that will catch illegal instruction traps and interpret floating point operations. (See fptrap(3).) To install this subroutine in the library, change to /usr/src/libfpsim and execute the shell files compall mklib The system as delivered does not have this code included in any command, although the operating system adapts automati- cally to the presence or absence of the FP11. Next, a floating-point version of the C compiler in /usr/src/cmd/c should be compiled using the commands: cd /usr/src/cmd/c make fc1 mv fc1 /lib/fc1 This allows programs with floating point constants to be compiled. To compile floating point programs use the `-f' flag to cc(1). This flag ensures that the floating point interpreter is loaded with the program and that the floating point version of `cc' is used. The library doesn't actually build a libfpsim.a but rather it hooks into libc? And the fc1 command won't build as there is no libfpsim.... Maybe I'm doing something obviously wrong? Any hint would be appreciated. Jason