simh中运行unix v7

去http://simh.trailing-edge.com/software.html下载uv7swre.zip，解压后生成 unix_v7_rl.dsk 

$ vi boot.int 

$ cat boot.int 

set   cpu   u18 

set   rl0   RL02 

att   rl0   unix_v7_rl.dsk 

boot   rl0

q

$ pdp11 boot.int 

PDP-11 simulator V3.9-0

Disabling XQ

@boot

New Boot, known devices are hp ht rk rl rp tm vt 

: rl(0,0)rl2unix

mem = 177856

# 

mem = 177856

# cat /etc/passwd

root:VwL97VCAx1Qhs:0:1::/:

daemon:x:1:1::/:

sys::2:2::/usr/sys:

bin::3:3::/bin:

uucp::4:4::/usr/lib/uucp:/usr/lib/uucico

dmr::7:3::/usr/dmr:

# mkdir /usr/dmr

# chown dmr /usr/dmr

# chgrp 3 /usr/dmr

# mkdir /tmp

# chmod 777 /tmp

# ^D

Restricted rights: Use, duplication, or disclosure

is subject to restrictions stated in your contract with

Western Electric Company, Inc.

Thu Sep 22 05:51:05 EDT 1988

login: dmr

$ ed hello.c

?hello.c

a

main()

{

    printf("Hello World!\n");

}

.

w

40

q

$ cc hello.c

$ a.out