PDP7-Unix/cmd/ed2.s
"** 08-rest.pdf page 21
"[handwritten page number top right of scan - 14]
" ed2
cs:
jms getsc; tal
sad o40
jmp cs
sad o12
jmp error
dac delim
jms compile
lac tbufp
dac tal1
1:
jms getsc; tal
sad delim
jmp 1f
sad o12
jmp error
jms putsc; tal1
jmp 1b
1:
lac o12
jms putsc; tal1
jms newline
jms setdd
lac addr1
sad zerop
jmp error
1:
dac addr1
lac i addr1
jms execute
jmp 2f
lac addr1
dac dot
law line-1
dac 8
law nlist-1
dac 9
-64
dac c1
3:
lac i 8
dac i 9
isz c1
jmp 3b
-1
tad fchrno
dac linsiz
rcr
szl
xor o400000
tad linep
dac tal1
lac tbufp
dac tal
3:
jms getsc; tal
sad o12
jmp 3f
jms putsc; tal1
isz linsiz
"** 08-rest.pdf page 22
"[handwritten page number top right of scan - 15]
jmp 3b
3:
-1
tad lchrno
rcr
szl
xor o400000
tad nlistp
dac tal
3:
jms getsc; tal
jms putsc; tal1
isz linsiz
sad o12
skp
jmp 3b
jms addline
2:
lac addr1
sad addr2
jmp advanc
tad d1
jmp 1b
fsrch:
dac delim
jms compile
jms srcsav
lac dot
floop:
tad d1
dac addr
lac i addr
sza
jmp 1f
lac zerop
dac addr
jmp 2f
1:
jms execute
jmp 2f
jms srcres
jmp ad1
2:
lac addr
sad dot
jmp error
jmp floop
bsrch:
dac delim
jms compile
jms srcsav
lac dot
sad zerop
lac eofp
bloop:
tad dm1
dac addr
lac i addr
"** 08-rest.pdf page 23
"[handwritten page number top right of scan - 16]
sza
jmp 1f
lac eofp
dac addr
jmp 2f
1:
jms execute
jmp 2f
jms srcres
jmp ad1
2:
lac addr
sad dot
jmp error
jmp bloop
srcsav: 0
lac minflg
sza
jmp error
lac addr
sma
jmp error
law line-1
dac 8
law tbuf-1
dac 9
-64
dac c1
1:
lac i 8
dac i 9
isz c1
jmp 1b
jmp i srcsav
srcres: 0
law tbuf-1
dac 8
law line-1
dac 9
-64
dac c1
1:
lac i 8
dac i 9
isz c1
jmp 1b
jmp i srcres
compile: 0
law compbuf-1
dac 8
dzm prev
dzm compflg
cadvanc:
jms getsc; tal
sad delim
jmp cdone
dac compflg
"** 08-rest.pdf page 24
"[handwritten page number top right of scan - 17]
dzm lastre
sad o12 " newline
jmp error
"sad o133 " [
"jmp chrcls
sad o136 " ^?
jmp beglin
sad o44 " $
jmp endlin
"sad o52 " * (disabled)
"jmp clsure
dac 1f
jms comp
1; jms matchar; 1: 0; 0
jmp cadvanc
cdone:
lac compflg
sna
jmp 1f
dac lastre
jms comp
1; jms found; 0
jmp i compile
1: "???
lac lastre
sna
jmp error
jmp i compile
chrcls:
jmp error
beglin: "???
jms comp
1; jms matbol; 0
dzm prev
jmp cadvanc
endlin: "???
jms comp
1; jms mateol; 0
dzm prev
jmp cadvanc
clsure:
lac prev
sna
jmp error
tad d1
dac 1f
jms comp
1; jms matclo; 1: 0; 0
dzm prev
jmp cadvanc
comp: 0 "???
-1
tad comp
dac 9
lac 8
"** 08-rest.pdf page 25
"[handwritten page number top right of scan - 18]
dac prev
1: "???
lac i 9
sna
jmp i 9
dac i 8
jmp 1b
execute: 0
jms gline
lac linep
dac tal1
dzm charno
dzm fchrno
dzm lchrno
lac jmpclist
dac trvect
lac jmpnlist
dac trvect+1
lac jmpxchg
dac i trvect+1
jmp 1f
xchg:
lacq
sad o12
jmp i execute
lac jmpxchg
dac i 8
1: "???
lac trvect
lmq
lac trvect+1
dac trvect
lacq
dac trvect+1
tad dm1
dac 8
jms getsc; tal1
lmq
isz charno
jms compbuf
charno:
0
trvect:
0;0
matchar: 0 "???
-2
tad matchar
dac exret
lac i exret
dac exret
lacq
sad i matchar
skp
jmp 1f
lac matchar
and o17777
tad jms1
dac i 8
"** 08-rest.pdf page 26
"[handwritten page number top right of scan - 19]
lac i exret
dac i 8
1: "???
isz exret
jmp i exret
found: 0
-2
tad found
dac exret
lac i exret
dac exret
lac fchrno
sza
jmp 1f
isz execute
jmp 2f
1: "???
sad i exret
jmp 1f
cma
tad i exret
spa
jmp 2f
jmp 3f
1: "???
lac charno
cma
tad charno
spa
jmp 3f
2: "???
lac i exret
dac fchrno
lac charno
dac lchrno
3: "???
isz exret
jmp i exret
matbol: 0 "???
lac charno
sad d1
jmp 1f
lac matbol
jmp 2f
1: "???
lac matbol
jmp 3f
mateol: 0 "???
lacq
sad o12
jmp 1f
lac mateol
2: "???
tad dm2
dac exret
lac i exret
dac 9
jmp i 9
"** 08-rest.pdf page 27
"[handwritten page number top right of scan - 20]
1: "???
lac mateol
3: "???
tad dm3
dac 9
lac i 9
isz 9
dac i 9
jmp i 9
matclo: 0 "???
-2
tad matclo
dac exret
lac i exret
dac cloret
lac i cloret
dac 1f
dac 2f
lac i matclo
dac exret
jms i exret; 1: 0
isz matclo
jms i matclo; 2: 0
isz cloret
jmp i cloret
"??? the remainder of this scan had an unreadable first character
"??? I did the best I could to recreate the characters appropriately
d1: 1
o133: 0133
dm3: -3
o136: 0136
dm2: -2
o52: 052
o57: 057
o77: 077
o40: 040
o12: 012
d47: 47
d58: 58
dm48: -48
d10: 10
d8: 8
d48: o60: 060
d100000: 100000
o44: 044
o53: 053
o56: 056
o55: 055
o11: 011
o400000: 0400000
o17777: 017777
o144: 0144
dm1: -1
o56012: 056012
o777: 0777
o100: 0100
o43: 043
o777000: 0777000
o75: 075
o167: 0167
o161: 0161
"** 08-rest.pdf page 28
"[handwritten page number top right of scan - 21]
o160: 0160
o143: 0143
o141: 0141
o1777: 01777
d1024: 1024
o776000: 0776000
o162: 0162
o163: 0163
o73: 073
o54: 054
o17: 017
tname:
0145056;0164155;0160040;040040
tbufp: tbuf
linep: line
nlistp: nlist
fbufp: fbuf
dskbfp: dskbuf "[line crossed out - scan markup]
edskbfp: dskbuf+1024 "[line crossed out - scan markup]
lnodp: lnodes
linpm1: line-1
jmpclist: jmp clist
jmpnlist: jmp nlist
jmpxchg: jmp xchg
jms1: jms 1
tal: .=.+1
exret: .=.+1
cloret: .=.+1
delim: .=.+1
prev: .=.+1
compflg: .=.+1
tal1: .=.+1
c1: .=.+1
ital: .=.+1
otal: .=.+1
diskin: .=.+1
glint1: .=.+1
c2: .=.+1
num: .=.+1
zermp: .=.+1
minflg: .=.+1
adrflg: .=.+1
dot: .=.+1
addr: .=.+1
addr1: .=.+1
addr2: .=.+1
eofp: .=.+1
zerop: .=.+1
dskadr: .=.+1
linsiz: .=.+1
tfi: .=.+1
fchrno: .=.+1
lchrno: .=.+1
lastre: .=.+1
bett1: .=.+1
bett2: .=.+1
wrflg: .=.+1
apt1: .=.+1
sfi: .=.+1 " e.tmp input fd
"** 08-rest.pdf page 29
"[handwritten page number top right of scan - 22]
sfo: .=.+1 " e.tmp output fd
sctal: .=.+1
sctalp: .=.+1
char: .=.+1
fbuf: .=.+4 "not sure if this is fbuf, but
tbuf: .=.+64 "there is a write; tbuf; 64 call
line: .=.+64
nlist: .=.+50
clist: .=.+50
compbuf: .=.+100
dskbuf: .=.+1024 "[line crossed out - scan markup]
lnodes: .=.+1000