Success! Nach tage- und nächtelangem iterativem kompilieren und fummeln (der Source ist halt nicht ganz komplett, und die Tools im Ultrix 4 sind manchmal halt doch zu neu), habe ich doch noch ein Ultrix 2.0 im simh vax780 zum booten gebracht!
VAX780 simulator V3.8-1
Boot
: ra(0,0)vmunix
498700+182700+190068 start 0x3485
Ultrix V2.0-1 System #1: Fri Oct 29 04:09:16 GMT-2:00 1999
real mem = 16777216
avail mem = 15279104
using 20 buffers containing 163840 bytes of memory
VAX 11/780, serial no. 1234, hardware level = 7
mcr0 (MS780-E) at address 0x20002000, 8Mbytes, noninterleaved (upper ctlr)
mcr1 (MS780-E) at address 0x20004000, 8Mbytes, noninterleaved (upper ctlr)
uba0 at address 0x20006000
hk0 at uba0 csr 177440 vec 210, ipl 15
rk0 at hk0 slave 0
rk1 at hk0 slave 1
rk2 at hk0 slave 2
rk3 at hk0 slave 3
rk4 at hk0 slave 4
rk5 at hk0 slave 5
rk6 at hk0 slave 6
rk7 at hk0 slave 7
klesiu0 at uba0
tmscp1 at klesiu0 csr 174500 vec 774, ipl 15
tms0 at tmscp1 slave 0
uda0 at uba0
uq0 at uda0 csr 172150 vec 770, ipl 15
ra0 at uq0 slave 0
ra1 at uq0 slave 1
ra2 at uq0 slave 2
ra3 at uq0 slave 3
zs0 at uba0 csr 172520 vec 224, ipl 15
ts0 at zs0 slave 0
lp0 at uba0 csr 177514 vec 200, ipl 14
mba0 at address 0x20010000
hp0 at mba0 drive 0
hp1 at mba0 drive 1
hp2 at mba0 drive 2
hp3 at mba0 drive 3
hp4 at mba0 drive 4
hp5 at mba0 drive 5
hp6 at mba0 drive 6
hp7 at mba0 drive 7
mba1 at address 0x20012000
ht0 at mba1 drive 0
tu0 at ht0 slave 0
tu1 at ht0 slave 1
tu2 at ht0 slave 2
tu3 at ht0 slave 3
boot device not found
root device? ra0
erase ^?, kill ^U, intr ^C
stty: : Not a typewriter
# uname -a
ULTRIX-32 2.0 0 VAX
Zeit, schlafen zu gehen...
Werde in den nächsten Tagen schauen, ob sich daraus auch eine ordentliche Distribution basteln lässt.