On 08/07/2014 12:50, Johnny Billquist wrote: > On 2014-07-08 01:50, Henry Bent wrote: >> How are standalone programs loaded and run on the 8600? On the 7x0 I >> can do "load -o boot 0" and "run 2" and that will run a standalone >> boot. When I do that in the 8600 sim I get a newline and then the >> program just loops forever. >> >> Alternately, does anyone know the right way to load bootblocks on an ra >> disk in Ultrix 1 or 2 so that I can boot off of the disk directly? >> Everything I've tried just ends up giving a "%BOOT-F-Unable to locate >> BOOT fil" message from vmb.exe. > > VMB needs to have R5 set to specific values to boot Ultrix. > If I remember right, bit 3 (0x8) needs to be set in R5 in order for > VMB to just load the boot block from the device and start executing > that instead of trying to look for specific files inside a Files-11 > filesystem. > > But on a rel 86x0, you can also load other binaries from the console > device, and just start them. For old versions of Ultrix, I seem to > remember that this is what they did, before VMB gained the capability > to boot from a boot block. >
The value 8 is correct for R5. To boot this in simh use: sim> b rq0 /r5:8 On a side note I think this flag is not required on later VAX system such as the MicroVAX II. The ROM code seems to work out what to do. 'load -o' is supported on the VAX 8600 so I suspect there is another issue. It could be a problem with the console device as I think someone has previously mentioned that there are some issues with my implementation (unless this been fixed now?) Matt _______________________________________________ Simh mailing list [email protected] http://mailman.trailing-edge.com/mailman/listinfo/simh
