[Simh] {Spam?} transferring files to and from v6 unix running in pdp11 emulator

[Will Senn]

On 12/9/15 10:01 PM, Clem cole wrote:
> It should not be a 411 code. It should be a standard 407.  11/34 and 11/60s are so called 40 class systems. I used v6tar with them just fine.
>
> Sent from my iPhone
>
>> On Dec 9, 2015, at 10:40 PM, Will Senn <will.senn at gmail.com> wrote:
>>
>> use its v6tar on v6. It appears to require split I+D,
Clem,

Thanks for persisting. I figured it out - on Keith Bostic's v7, using 
the default makefile for v6tar:
make v6tar
cc -O -c tar.c
cc -c -O /usr/src/libc/v6/access.c
cc -c -O /usr/src/libc/v6/chown.c
cc -c -O /usr/src/libc/v6/execl.c
cc -c -O /usr/src/libc/v6/ftime.c
cc -c -O /usr/src/libc/v6/gtty.c
cc -c -O /usr/src/libc/v6/lseek.c
cc -c -O /usr/src/libc/v6/stat.c
cc -c -O /usr/src/libc/v6/syscall.s
cc -c -O /usr/src/libc/v6/time.s
cc -i -s -O *.o -o v6tar
# dd if=v6tar bs=128 count=1|od
0000000 000411 037100 004224 027466 000000 000000 000000 000001
...
man cc says -i and -s are passed through to linker, so man ld says -i 
creates separate I+D and -s strips symbol table. I compiled the binary 
without these (I thought I would keep the symbol table as an excercise) 
using:
cc -O *.o -o v6tar

The resulting binary is 407, yay!:
dd if=v6tar bs=128 count=1|od
0000000 000407 037040 004224 027466 020744 000000 000000 000001
...

I copied it over to v6, lo and behold, it works on a PDP11/40 without 
separate I+D!

Thanks,

Will