dps8m Reviews

Hello ! A great thank's for your work. I was a system ingeneer on GCOS3 and GCOS8. It's a great pleasure to use GTSS. I've many difficulties to set up the environment but it's good for my brain. Thank's

Getting this to run on the Mac did not take long, built it from source and booted Multics. Had a PL/I program compiled 5 minutes later and spent some time customizing the system, giving it my own name, adding a userid and alias. Great work! Am incredibly happy that this important part of computing history is alive again!

What a nostalgic pleasure to boot MULTICS again, thanks for doing this.

Astonishing to be able to run the first ever mainframe I used (Cardiff - 1983) on my PC. A brilliant effort guys.

The dps8m simulation team has worked incredibly hard to get Multics available again. A QuickStart installation is also now available but it is also possible to bring up a simulated Multics "the hard way" if desired. This project will be valuable to operating system researchers, enthusiasts, and of course, former Multics users, administrators, and developers. Thank you for the huge effort!

Great project, hope it continues to grow.

At last, someone made the giant leap. Multics reborn. A very good and promising start. A terminal accepting commands seems close (and it'll be faster than the 1200 bd at the time). Please keep up the good work!

Oh, for some reason, I thought I needed a linux environment to run it, but if you have the Xcode command line tools installed on a Mac, you can just run "make clean; make" in the src/dps8 directory and it works just fine in a terminal window on Yosemite.

Instructions for Building on Cygwin64 If you don't have Cygwin64 installed already, do so, and you can get by with a very minimal install of the cygwin core it selects, then add gcc-core, make, binutils, bison, and flex, and the install will bring in the dependent libraries and other components. After unpacking the tarball, open a Windows command shell and navigate to the src subdirectory of the tree, and type mklink /j simhv40-beta simh When you do the builds, and run the simulator, you'll need to use the Cygwin64 Terminal; at least I wasn't successful running the simulator in the CMD shell (simh couldn't find the ini script files). Next, using your favorite editor, apply the following changes: 1) edit dps8_math.c, adding these prototypes after the include files: long double ldexpl(long double x, int n) { return __builtin_ldexpl(x, n); } long double exp2l (long double e) { return __builtin_exp2l(e); } 2) three changes to the makefiles ***** ..\Makefile.mk 1: CC = gcc 2: LD = gcc 3: #CC = clang 4: #LD = clang 5: ***** \MULTICS\DPS8-VANILLA\SRC\MAKEFILE.MK 1: #CC = gcc 2: #LD = gcc 3: CC = clang 4: LD = clang 5: ***** ***** .\Makefile 201: # simh requires -ldl 202: # LIBS = $(LOCALLIBS) -lm -ldl -lrt 203: LIBS = $(LOCALLIBS) -lgcc -lm -ldl -lrt 204: ***** \MULTICS\DPS8-VANILLA\SRC\DPS8\MAKEFILE 201: # simh requires -ldl 202: LIBS = $(LOCALLIBS) -lm -ldl 203: ***** ***** .\Makefile 304: 305: # If you do not have ctags in your build environment, change '-ctags' to 306: # '# -ctags' below. 307: ***** \MULTICS\DPS8-VANILLA\SRC\DPS8\MAKEFILE 303: 304: # If you do not have ctags in your build environment, change 'ctags' to 305: # '#ctags' below. 306: ***** ***** .\Makefile 308: tags : $(C_SRCS) $(H_SRCS) 309: # -ctags $(C_SRCS) $(H_SRCS) ../simh/*.[ch] ../decNumber/dec*.[ch] 310: ***** \MULTICS\DPS8-VANILLA\SRC\DPS8\MAKEFILE 307: tags : $(C_SRCS) $(H_SRCS) 308: -ctags $(C_SRCS) $(H_SRCS) ../simh/*.[ch] ../decNumber/dec*.[ch] 309: ***** 3) One edit to Cygwin64’s /usr/include/string.h: ***** C:\CYGWIN64\USR\INCLUDE\string.h 137: char *_EXFUN(strlwr,(char *)); 138: //char *_EXFUN(strupr,(char *)); 139: #endif ***** C:\CYGWIN64-X\USR\INCLUDE\STRING.H 137: char *_EXFUN(strlwr,(char *)); 138: char *_EXFUN(strupr,(char *)); 139: #endif ***** Then just make, and have fun. I recommend trying a manual load of Hello.oct first, then try ./dps8 MR12.3_install.ini and when that completes: ./dps8 rulez.ini As I told Harry, booting Multics on Windows is the most dignified thing I've ever seen Windows do! -dai

Dps8m works perfect.