Research PDP7 development

[unix-history] / s1.s

diff --git a/s1.s b/s1.s
new file mode 100644 (file)
index 0000000..69e47f9
--- /dev/null
+++ b/s1.s
@@ -0,0 +1,193 @@
+" S1
+
+.. = 0
+t = 0
+orig:
+   hlt
+   jmp pibreak
+
+. = orig+7
+   -1
+
+. = orig+020
+   1f
+   iof
+   dac u.ac
+   lac 020
+   dac 1f
+   lac 1f-1
+   dac 020
+   lac u.ac
+   jmp 1f+1
+   1f
+1: 0
+   iof
+   dac u.ac
+   lacq
+   dac u.mq
+   lac 8
+   dac u.rq
+   lac 9
+   dac u.rq+1
+   jms copy; 10; u.rq+2; 6
+   lac 1b
+   dac u.rq+8
+   -1
+   dac .savblk
+   dac .insys
+   lac uquant
+   jms betwen; d0; maxquant
+      jms swap
+   ion
+   -1
+   tad u.rq+8
+   jms laci
+   jms betwen; o20001; swn
+      jmp badcal
+   tad swp
+   dac .+1
+   jmp .. i
+
+. = orig+0100
+   jmp coldentry
+   jms halt
+
+okexit:
+   dzm u.ac
+sysexit:
+   ion
+   lac .savblk
+   sza
+   jmp 1f
+   jms copy; sysdata; dskbuf; 64
+   cla
+   jms dskio; 07000
+1:
+   dzm .insys
+   jms chkint
+      skp
+   jmp .save
+   jms copy; u.rq+2; 10; 6
+   lac u.rq+1
+   dac 9
+   lac u.rq
+   dac 8
+   lac u.mq
+   lmq
+   lac u.ac
+   jmp u.rq+8 i
+
+swap: 0
+   ion
+1:
+   jms lookfor; 3 " out/ready
+      jmp 1f
+   jms lookfor; 1 " in/ready
+      skp
+   jmp 1b
+   dzm maxquant
+   jmp 3f
+1:
+   dac 9f+t
+   jms lookfor; 2 " in/notready
+      jmp 1f
+   jms lookfor; 1 " in/ready
+      jmp 1f
+   jmp 2f
+1:
+   lac swap
+   dac u.swapret
+   iof
+   lac o200000
+   tad u.ulistp i
+   dac u.ulistp i
+   ion
+   jms dskswap; 07000
+   lac u.dspbuf
+   sna
+   jmp 2f
+   law dspbuf
+   jms movdsp
+2:
+   iof
+   lac o600000
+   tad 9f+t i
+   dac 9f+t i
+   ion
+   jms dskswap; 06000
+   lac u.swapret
+   dac swap
+   lac o20
+   dac maxquant
+   lac u.dspbuf
+   sza
+   jms movdsp
+3:
+   dzm uquant
+   iof
+   jmp swap i
+t = t+1
+
+swp:
+   jmp .
+   .save; .getuid; .open; .read; .write; .creat; .seek; .tell
+   .close; .link; .unlink; .setuid; .rename; .exit; .time; .intrp
+   .chdir; .chmod; .chown; badcal; .sysloc; badcal; .capt; .rele
+   .status; badcal; .smes; .rmes; .fork
+swn:
+   .-swp-1 i
+
+.intrp:
+   lac u.ac
+   dac u.intflg
+   jmp okexit
+
+.sysloc:
+   lac u.ac
+   and o17777
+   jms betwen; d1; locn
+      jms error
+   tad locsw
+   dac .+1
+   lac ..
+   dac u.ac
+   jmp sysexit
+
+locsw:
+   lac .
+   iget; inode; userdata; sysdata; copy; copyz; betwen; dskrd
+   dskwr; dskbuf; dpdata; namei; pbsflgs; alloc; free; dspdata
+   crdata
+locn:
+   .-locsw-1
+
+chkint: 0
+   lac .insys
+   sza
+   jmp chkint i
+   lac .int1
+   sna
+   jmp 1f
+   sad u.ofiles+2
+   jmp 2f
+1:
+   lac .int2
+   sna
+   jmp chkint i
+   sad u.ofiles+2
+   skp
+   jmp chkint i
+   dzm .int2
+   jmp 1f
+2:
+   dzm .int1
+1:
+   lac u.intflg
+   sza
+   jmp chkint i
+   -1
+   dac .insys
+   ion
+   isz chkint
+   jmp chkint i
+