diff --git a/scans/Readme b/scans/Readme
index 8915dc2..9d2840f 100644
--- a/scans/Readme
+++ b/scans/Readme
@@ -6,16 +6,16 @@ For modified versions of these files, look in src/cmds and src/sys.
 
 Details of the files:
 
-s1.s: pages 2-5    of 01-s1.pdf, incomplete
-s2.s: pages 7-
-s3.s: pages 14-
-s4.s: pages 21-
-s5.s: pages 28-
-s6.s: pages 34-
-s7.s: pages ??? of ???
-s8.s: pages ??? of ???
-s9.s: pages ??? of ???
-sx.s: temp symbol defns (pages ??? of s1.s)
+s1.s: pages 2-5    of 01-s1.pdf
+s2.s: pages 7-12   of 01-s1.pdf
+s3.s: pages 14-19  of 01-s1.pdf
+s4.s: pages 21-26  of 01-s1.pdf
+s5.s: pages 28-32  of 01-s1.pdf
+s6.s: pages 34-38  of 01-s1.pdf
+s7.s: pages 41-46  of 01-s1.pdf
+s8.s: pages 48-51  of 01-s1.pdf
+s9.s: pages 53-54  of 01-s1.pdf
+sx.s: temp additional symbol defns
 
 bc.s:  pages 7-11  of 06-5-12.pdf
 bi.s:  pages 12-19 of 06-5-12.pdf
diff --git a/scans/s2.s b/scans/s2.s
index 5c51afc..3847776 100644
--- a/scans/s2.s
+++ b/scans/s2.s
@@ -98,12 +98,12 @@
    jms arg
    dac 2f
    lac d4
-   jms namei; 0; 0
+   jms namei; 0:0
       jms error
-   jms namei; 1; 0
+   jms namei; 1:0
       jms error
    dac u.base
-   jms copy; 2; 0; name; 4
+   jms copy; 2:0; name; 4
    lac u.cdir
    jms namei; name
       skp
@@ -160,12 +160,12 @@
    jms arg
    dac 1f
    lac u.cdir
-   jms namei; 0;0
+   jms namei; 0:0
       jms error
    lac d1
    dac mode
    jms access
-   jms copy; 1; 0; d.name; 4
+   jms copy; 1:0; d.name; 4
    jmp okexit
 
 .time:
@@ -197,7 +197,7 @@
    lac d2
    dac mode
    lac u.cdir
-   jms namei; 0; 0
+   jms namei; 0:0
       jms error
    jms iget
    jms access
diff --git a/scans/s3.s b/scans/s3.s
index 6ca7b28..742c0a3 100644
--- a/scans/s3.s
+++ b/scans/s3.s
@@ -51,8 +51,8 @@ lookfor: 0
    law sysexit
    dac u.swapret
    lac o200000
-   tad u.listp i
-   dac u.listp i
+   tad u.ulistp i
+   dac u.ulistp i
    jms dskswap; 07000
    lac 9f+t
    dac u.ulistp
@@ -138,7 +138,7 @@ t = t+1
    sad u.ac
    skp
    jmp 1b i
-   lac 1u+2
+   lac lu+2
    sad dm1
    jmp 1f
    lac o100000
@@ -158,7 +158,7 @@ t = t+1
 1:
    -3
    tad 8
-   dac 0f+t
+   dac 9f+t
    lac o700000
    tad 9f+t i
    dac 9f+t i
@@ -281,7 +281,7 @@ rkbdi:
 3:
    jms sleep; sfiles+2
    jms swap
-   jmp rkdbi
+   jmp rkbdi
 
 wdspo:
    jms chkint1
diff --git a/scans/s4.s b/scans/s4.s
index c4cdfbf..e1e406f 100644
--- a/scans/s4.s
+++ b/scans/s4.s
@@ -55,7 +55,7 @@ free: 0
 t = t+1
 
 laci: 0
-   and o1777
+   and o17777
    tad o200000
    dac .+1
    lac ..
@@ -144,7 +144,7 @@ getchar: 0
    tad o200001
    dac .+3
    cla
-   jms putc
+   jms putq
    lac q2+1 ..
    isz getchar
    jmp i getchar
@@ -155,7 +155,7 @@ takeq: 0
    dac .+7
    tad o640000
    dac .+17
-   dad s1
+   tad d1
    dac .+14
    tad o500000
    dac .+5
@@ -234,7 +234,7 @@ collapse: 0
    sna
    jmp 0f+3
    dac 0f+2
-   jms copy; 0; ..; ..; ..
+   jms copy; 0:..; ..; ..
    -65
    tad edskbsp
    dac 9f+t
@@ -242,7 +242,7 @@ collapse: 0
    dac 0f
    lac dskaddr
    dac 9f+t i
-   jms copy; dskbuf; 0; ..; 64
+   jms copy; dskbuf; 0:..; 64
    jmp collapse i
 
 dskrd: 0
@@ -265,7 +265,7 @@ dskrd: 0
    dac .+2
    jms copy; ..; dskbuf; 64
 2:
-   jms collaps
+   jms collapse
    jmp dskrd i
 
 dskwr: 0
diff --git a/scans/s5.s b/scans/s5.s
index 0d20930..9a136ce 100644
--- a/scans/s5.s
+++ b/scans/s5.s
@@ -89,6 +89,11 @@ forall: 0
    lrs 9
    and o777
    jmp forall i
+failr:
+   lac u.base
+   add o400000
+   dac u.base
+   jmp forall+1
 1:
    lac u.count
    dac u.ac
diff --git a/scans/s7.s b/scans/s7.s
index 42d841e..03ce63d 100644
--- a/scans/s7.s
+++ b/scans/s7.s
@@ -3,15 +3,16 @@
 
 pibreak:
    dac .ac	"** CROSSED OUT....
-   lpsf
+
+   dpsf
    jmp 1f
 
-   lpcf
-   dprs		"** ??
+   dpcf
+   dprs
    dac dpstat
    sma ral
    jmp 2f
-   dprc		"** ??
+   dprc
    dac dpchar
    -1
    dac dpread
@@ -71,11 +72,7 @@ cnop:
    jmp piret
 
 1: lds		"** BEGIN CROSSED OUT
-   sma ra1
-   jmp 1f
-   cdf
-   lac .dspb
-   sna
+   sma ral
    jmp 1f
    cdf
    lac .dspb
@@ -86,8 +83,16 @@ cnop:
    jmp dsprestart
    dac .dspb
    jmp piret
+dsprestart:
+   lac d1
+   dac .dspb
+   lac dspbufp
+   beg		"** ???
+   -10
+   dac .dsptm
+   jmp piret
 
-1: sna ra1
+1: sna ral
    jmp .+3
    racf
    jmp piret
@@ -125,7 +130,7 @@ cnop:
 
 "** 01-s1.pdf page 43
 
-   jms ptcr
+   jms putcr
    jms ttyrestart
    jmp piret
 
@@ -277,7 +282,7 @@ ttyrestart: 0
 
 piret:
    lac 0
-   rai
+   ral
    lac .ac
    ion
    jmp 0 i
@@ -292,7 +297,7 @@ wakeup: 0
    dac 2f+1
 1:
    lac 9f+t
-   rao
+   ral
    dac 9f+t
    sma
    jmp 2f+2
diff --git a/scans/s8.s b/scans/s8.s
index e70e643..88ad5f4 100644
--- a/scans/s8.s
+++ b/scans/s8.s
@@ -4,7 +4,7 @@
 
 " manifests
 mnproc = 10
-dspbss = 270
+dspbsz = 270
 ndskbs = 4
 
 " flags
@@ -24,7 +24,7 @@ maxquant: 30
 ofilesp: u.ofiles
 idskpp: i.dskps
 dskbufp: dskbuf
-edspbuf: dspbuf+dspbzs
+edspbuf: dspbuf+dspbsz
 fblksp: s.fblks
 dacq1: dac q1
 lacq1: lac q1
@@ -113,7 +113,7 @@ coldentry:
    ion
    clon
    law 3072
-   vcga
+   wcga
    jms dspinit
    law dspbuf
    jms movdsp
@@ -142,6 +142,7 @@ ttydelay: .=.+1
 name: .=.+4
 lnkaddr: .=.+1
 char: .=.+1
+dskaddr: .=.+1
 uniqpid: 1
 lu: .=.+4
 sfiles: .=.+10
@@ -180,7 +181,7 @@ userdata:
    u.uid: -1
    u.pid: 1
    u.cdir: 3
-   u.ulistp: clist
+   u.ulistp: ulist
    u.swapret: 0
    u.base: 0
    u.count: 0
@@ -200,6 +201,7 @@ inode:
    i.uniq: .=.+1
       .= inode+12
 di: .=.+1
+dnode:
    d.i: .=.+1
    d.name: .=.+4
    d.uniq: .=.+1
diff --git a/scans/s9.s b/scans/s9.s
index 77004b2..4967d2f 100644
--- a/scans/s9.s
+++ b/scans/s9.s
@@ -1,4 +1,4 @@
-"** 01-s1.pdf page 54
+"** 01-s1.pdf page 53
 " s9 -- cold boot
 
 . = coldentry+4
@@ -8,7 +8,7 @@
    dzm ii
    jms copyz; dskbuf; 64
 1:
-   iac ii
+   lac ii
    jms dskio; 0700
    isz ii
    -710
@@ -42,7 +42,7 @@
    jms iget
    jms copyz; inode; 12
    jms getw " flags
-   dac i.dlags
+   dac i.flags
    -1
    dac i.uid
    jms getw " number links
@@ -51,7 +51,7 @@
    tad xx
    dac i.size
    lac ii
-   dac u.uniq
+   dac i.uniq
    law 4096-1
    dac 8
    -1
@@ -65,7 +65,7 @@
 2:
    jms getw
    dac 8 i
-   iss xx
+   isz xx
    jmp 2b
 3:
    lac sum
@@ -80,7 +80,7 @@
    jms iwrite; 4096; ..
    jms iput
    cla
-   jms dksio
+   jms dskio
 
 
 
@@ -90,10 +90,10 @@
 getw: 0
    jms getc
    alss 12
-   imq
+   lmq
    jms getc
-   omg
-   lmg
+   omq
+   lmq
    jms getc
    omg
    lmg
diff --git a/scans/sx.s b/scans/sx.s
index 8c16094..ab37559 100644
--- a/scans/sx.s
+++ b/scans/sx.s
@@ -1,5 +1,28 @@
-
 " For now, this stuff is defined so that
 " the assembler doesn't complain about it
 
+" illegible
+idunno=-1
+wbi=-1
+
+" disk I/O instructions?
+dscs=-1
+dslw=-1
+dslm=-1
+dsld=-1
+dsls=-1
+dssf=-1
+dsrs=-1
+
+" display I/O instructions?
+dprs=-1
+dprc=-1
+dpsf=-1
+dpcf=-1
+
+" printer I/O instructions?
+lpsf=-1
+lpcf=-1
+lpb=-1
+
 o7000: 07000