AUSAM/source/S/dc1.s
.globl log2
.globl getchar
.globl lookchar
.globl fsfile
.globl seekchar
.globl backspace
.globl putchar
.globl alterchar
.globl move
.globl rewind
.globl create
.globl zero
.globl allocate
.globl release
.globl collect
.globl w, r, a, l
/
cmp (sp)+,$2 / argc < 1 ?
blo 1f
tst (sp)+
mov (sp)+,0f
cmpb *0f,$'- / flag ?
beq 8f
sys 0; 9f
.data
9:
sys open; 0:.=.+2; 0
.text
bec 2f
mov $1,r0
sys write; 4f; 5f-4f
sys exit / can't open file arg
/
4: <Input file.\n>
5: .even
/
2:
mov r0,source / file descriptor
1:
sys signal; 2; 1
ror r0
bcs 1f
sys signal; 2; case177
1:
8:
clr delflag
mov $pdl,r5
/
mov $10.,r0
jsr pc,log2
mov r0,log10
mov $1,r0
jsr pc,allocate
mov r1,scalptr
clr r0
jsr pc,putchar
clr r0
jsr pc,allocate
mov r1,basptr
mov $10.,r0
jsr pc,putchar
mov $1,r0
jsr pc,allocate
mov r1,inbas
mov $10.,r0
jsr pc,putchar
mov $1,r0
jsr pc,allocate
mov $10.,r0
jsr pc,putchar
mov r1,tenptr
clr r0
jsr pc,allocate
mov r1,chptr
clr r0
jsr pc,allocate
mov r1,strptr
mov $1,r0
jsr pc,allocate
mov $2,r0
jsr pc,putchar
mov r1,sqtemp
clr r0
jsr pc,allocate
mov r1,divxyz
loop:
tst delflag
bne in177
mov sp,errstack
jsr pc,readc
mov $casetab,r1
1: tst (r1)+
beq 2f
cmp r0,(r1)+
bne 1b
jmp *-4(r1)
2: jmp eh
/
/
/ case for new line (which is special for apl box)
/
case012:
br loop
/
/
/ case q for quit
/
case161:
cmp readptr,$readstack+2
blos 1f
mov *readptr,r1
beq 2f
jsr pc,release
2:
sub $2,readptr
mov *readptr,r1
beq 2f
jsr pc,release
2:
sub $2,readptr
jmp loop
1:
jsr pc,readc / skip over rest of line
cmp $'\n,r0 / otherwise pass back junk
bne 1b / to shell/editor/etc.
sys exit
/
/
/ case Q for controlled quit
/
case121:
jsr pc,pop
jes eh
jsr pc,length
cmp r0,$2
jhi eh1
jsr pc,rewind
jsr pc,getchar
jmi eh1
jsr pc,release
1:
cmp readptr,$readstack
jlos eh
mov *readptr,r1
beq 2f
jsr pc,release
2:
sub $2,readptr
sob r0,1b
jbr loop
/
/
/ case of delete character
/
case177:
sys signal; 2; case177
mov $1,delflag
mov r0,-(sp)
mov 2(sp),r0
cmp -6(r0),$sys+read
bne 1f
sub $6,2(sp)
clr delflag
1:
mov (sp)+,r0
2 /rti
/
in177:
mov $' ,ch
mov $1,r0
sys write; 1f; 1
clr delflag
jmp eh
/
.bss
delflag: .=.+2
.text
1: <\n>
.even
/
/
/ case digit
/
case060:
movb r0,savec
jsr pc,readin
jsr pc,push
br loop
/
/
/ case _ for negative numbers
/
case137:
jsr pc,readin
jsr pc,fsfile
jsr pc,backspace
mov r0,savk
dec w(r1)
jsr pc,chsign
mov savk,r0
jsr pc,putchar
jsr pc,push
jbr loop
/
/
/ case screamer
/
case041:
jsr pc,in041
jbr loop
/
in041:
jsr pc,readc
cmp r0,$'<
jeq in74a
cmp r0,$'=
jeq in75a
cmp r0,$'>
jeq in76a
/
mov $field,r1
movb r0,(r1)+
1:
jsr pc,readc
movb r0,(r1)+
cmpb r0,$'\n
bne 1b
clrb (r1)+
/
sys fork
br 9f
sys wait
mov $1,r0
sys write; screamer; 2
rts pc
9: sys exec; 6f; 8f
sys exit
.data
8: 6f; 7f; field; 0
6: </bin/sh\0>
7: <-c\0>
screamer: <!\n>
.even
.bss
field: .=.+70.
.text
/
/
/ case d for duplicate
/
case144:
cmp r5,$pdl
jeq eh
clr r0
jsr pc,allocate
mov -2(r5),r0
jsr pc,move
jsr pc,push
jmp loop
/
/
/ case z for stack size
/
case172:
clr r0
jsr pc,allocate
mov r5,r3
sub $pdl,r3
asr r3
2:
beq 2f
clr r2
dvd $100.,r2
mov r3,r0
jsr pc,putchar
mov r2,r3
br 2b
2:
clr r0
jsr pc,putchar
jsr pc,push
jmp loop
/
/
/ case c for flush
/
case143:
2: jsr pc,pop
jes loop
jsr pc,release
br 2b
/
/ case s for save
/
case163:
tst sfree
bne 1f
jsr pc,sinit
1:
jsr pc,readc
cmp r5,$pdl
bne 2f
movb $'s,ch
jmp eh
2:
clr r2
cmpb r0,$128. / check for array
blo 1f
inc r2
1:
asl r0
mov stable(r0),r1
beq 2f
mov r1,r0
mov 2(r0),r1
tst r2
beq 4f
mov r1,-(sp) / have array - release elements
jsr pc,rewind
1:
mov (sp),r1
3:
jsr pc,getword
bes 1f
tst r0
beq 3b
mov r0,r1
jsr pc,release
br 1b
1:
mov (sp)+,r1
4:
jsr pc,release
jsr pc,pop
mov r1,2(r0)
jbr loop
2:
mov sfree,stable(r0)
mov stable(r0),r0
mov (r0),sfree
beq symout
clr (r0)
jsr pc,pop
mov r1,2(r0)
jmp loop
/
symout:
mov $1,r0
sys write; 7f; 8f-7f
jmp reset
/
7: <Symbol table overflow.\n>
8: .even
/
/
sinit:
mov $sfree+4,r0
1:
mov r0,-4(r0)
clr -2(r0)
add $4,r0
cmp r0,$sfend
blos 1b
clr sfend-4
rts pc
/
/
.bss
sfree: .=.+512.
sfend:
.text
/
/
/ case S for save
/
case123:
tst sfree
bne 1f
jsr pc,sinit
1:
jsr pc,readc
cmp r5,$pdl
bne 2f
movb $'S,ch
jbr eh
2:
clr r3
cmp r0,$128. / check for array
blo 1f
inc r3
1:
asl r0
mov stable(r0),r1
beq 2f
mov sfree,r2
mov (r2),sfree
beq symout
mov stable(r0),(r2)
mov r2,stable(r0)
jsr pc,pop
tst r3
beq 1f
jsr pc,length / to make auto arrays work
cmp r0,$1
bhi 1f
jsr pc,zero
1:
mov r1,2(r2)
jbr loop
2:
mov sfree,stable(r0)
mov stable(r0),r2
mov (r2),sfree
beq symout
clr (r2)
jsr pc,pop
tst r3
beq 1f
jsr pc,length
cmp r0,$1
bhi 1f
jsr pc,zero
1:
mov r1,2(r2)
jbr loop
/
/
/ case l for load
/
case154:
jsr pc,in154
jmp loop
/
in154:
jsr pc,readc
clr r2
cmp r0,$128. / check for array
blo 1f
inc r2
1:
asl r0
mov stable(r0),r1
beq 1f
mov 2(r1),r1
mov r1,-(sp)
jsr pc,length
jsr pc,allocate
tst r2
beq 2f
mov r1,-(sp) / have array - copy elements
mov 2(sp),r1
jsr pc,rewind
3:
mov 2(sp),r1
jsr pc,getword
bes 3f
tst r0
beq 4f
mov r0,-(sp)
mov r0,r1
jsr pc,length
jsr pc,allocate
mov (sp)+,r0
jsr pc,move
mov r1,r0
mov (sp),r1
jsr pc,putword
br 3b
4:
clr r0
mov (sp),r1
jsr pc,putword
br 3b
3:
mov (sp)+,r1
jsr pc,push
tst (sp)+
rts pc
2:
mov (sp)+,r0
jsr pc,move
jsr pc,push
rts pc
1:
clr r0
jsr pc,allocate
jsr pc,putword
jsr pc,push
rts pc
/
/ case : for save array
/
case072:
tst sfree
bne 1f
jsr pc,sinit
1:
jsr pc,pop
jes eh
jsr pc,scalint
jsr pc,fsfile
jsr pc,backspace
tst r0
jmi eh1 / neg. index
jsr pc,length
cmp r0,$2
jhi eh1 / index too high
jsr pc,fsfile
clr r3
cmp r0,$1
blo 1f
beq 2f
jsr pc,backspace
mov r0,r3
mul $100.,r3
2:
jsr pc,backspace
add r0,r3
cmp r3,$2048.
jhis eh1 / index too high
asl r3
1:
jsr pc,release
jsr pc,readc
cmp r5,$pdl
bne 2f
movb $':,ch
jmp eh
2:
asl r0
mov stable(r0),r1
beq 2f
mov r1,-(sp)
mov 2(r1),r1
mov l(r1),r0
sub a(r1),r0
sub $2,r0
cmp r3,r0
blos 1f
mov r1,-(sp) / need more space
mov r3,r0
add $2,r0
jsr pc,allocate
jsr pc,zero
mov (sp)+,r0
jsr pc,move
mov r1,-(sp)
mov r0,r1
jsr pc,release
mov (sp)+,r1
1:
mov r1,-(sp)
mov r3,r0
jsr pc,seekchar
jsr pc,getword
bes 1f
sub $2,r(r1)
tst r0
beq 1f
mov r0,r1
jsr pc,release
1:
jsr pc,pop
jes eh
mov r1,r0
mov (sp)+,r1
jsr pc,alterchar
swab r0
jsr pc,alterchar
mov (sp)+,r0
mov r1,2(r0)
jmp loop
2:
mov sfree,stable(r0)
mov stable(r0),r0
mov (r0),sfree
jeq symout
clr (r0)
mov r0,-(sp)
mov r3,r0
add $2,r0
jsr pc,allocate
jsr pc,zero
sub $2,r0
jsr pc,seekchar
mov r1,-(sp)
br 1b
/
/ case ; for load array
/
case073:
tst sfree
bne 1f
jsr pc,sinit
1:
jsr pc,pop
jes eh
jsr pc,scalint
jsr pc,fsfile
jsr pc,backspace
tst r0
jmi eh1 / neg. index
jsr pc,length
cmp r0,$2
jhi eh1
jsr pc,fsfile
clr r3
cmp r0,$1
blo 1f
beq 2f
jsr pc,backspace
mov r0,r3
mul $100.,r3
2:
jsr pc,backspace
add r0,r3
cmp r3,$2048.
jhis eh1 / index too high
asl r3
1:
jsr pc,release
jsr pc,readc
asl r0
mov stable(r0),r1
beq 1f
mov 2(r1),r1
jsr pc,length
sub $2,r0
cmp r3,r0
bhi 1f / element not here
mov r3,r0
jsr pc,seekchar
jsr pc,getword
tst r0
beq 1f
mov r0,r1
mov r1,-(sp)
jsr pc,length
jsr pc,allocate
mov (sp)+,r0
jsr pc,move
jsr pc,push
jmp loop
1:
clr r0
jsr pc,allocate
jsr pc,putword
jsr pc,push
jmp loop
/
/
/ case L for load
/
case114:
jsr pc,readc
clr r2
cmp r0,$128. / check for array
blo 1f
inc r2
1:
asl r0
mov stable(r0),r1
beq 4f
mov (r1),stable(r0)
mov sfree,(r1)
mov r1,sfree
mov 2(r1),r1
tst r2
beq 2f
mov r1,-(sp) / have array - assume a throw away
jsr pc,rewind
1:
mov (sp),r1
3:
jsr pc,getword
bes 1f
tst r0
beq 3b
mov r0,r1
jsr pc,release
br 1b
1:
mov (sp)+,r1
2:
jsr pc,push
jbr loop
4:
movb $'L,ch
jbr eh
/
/
/ case - for subtract
/
case055:
jsr pc,in055
jmp loop
/
in055:
jsr pc,pop
jes eh
jsr pc,fsfile
jsr pc,backspace
mov r0,savk
dec w(r1)
jsr pc,chsign
mov savk,r0
jsr pc,putchar
jsr pc,push
br in053
/
/
/ case + for add
/
case053:
jsr pc,in053
jmp loop
/
in053:
jsr pc,eqk
mov $add3,r0
jsr pc,binop
jsr pc,pop
mov savk,r0
jsr pc,putchar
jsr pc,push
rts pc
/
/
/ case * for multiply
/
case052:
jsr pc,pop
jes eh
mov r1,-(sp)
jsr pc,pop
jec 1f
mov (sp)+,r1
jsr pc,push
jbr eh
1:
jsr pc,fsfile
jsr pc,backspace
mov r0,savk2
dec w(r1)
mov r1,r2
mov (sp)+,r1
jsr pc,fsfile
jsr pc,backspace
mov r0,savk1
dec w(r1)
mov r1,r3
mov $mul3,r0
jsr pc,binop
jsr pc,pop
cmp savk1,savk2
blo 1f
mov savk1,r2
br 2f
1:
mov savk2,r2
2:
cmp r2,k
bhis 1f
mov k,r2
1:
add savk2,savk1
cmp r2,savk1
bhis 1f
mov r2,-(sp)
neg r2
add savk1,r2
jsr pc,removc
mov (sp)+,r0
2:
jsr pc,putchar
jsr pc,push
jmp loop
1:
mov savk1,r0
br 2b
/
/ r1 = string
/ r2 = count
/ result returned in r1 (old r1 released)
/
removc:
mov r1,-(sp)
jsr pc,rewind
1:
cmp r2,$1
blos 1f
jsr pc,getchar
sub $2,r2
br 1b
1:
mov $2,r0
jsr pc,allocate
mov r1,-(sp)
1:
mov 2(sp),r1
jsr pc,getchar
bes 1f
mov (sp),r1
jsr pc,putchar
mov r1,(sp)
br 1b
1:
cmp r2,$1
bne 1f
mov (sp),r3
mov tenptr,r2
jsr pc,div3
mov r1,(sp)
mov r3,r1
jsr pc,release
mov r4,r1
jsr pc,release
1:
mov 2(sp),r1
jsr pc,release
mov (sp)+,r1
tst (sp)+
rts pc
/
/ case / for divide
/
case057:
jsr pc,dscale
mov $div3,r0
jsr pc,binop
mov r4,r1
jsr pc,release
jsr pc,pop
mov savk,r0
jsr pc,putchar
jsr pc,push
jmp loop
/
/
dscale:
jsr pc,pop
jes eh
mov r1,-(sp)
jsr pc,pop
bec 1f
mov (sp)+,r1
jsr pc,push
jmp eh
1:
mov r1,-(sp)
jsr pc,fsfile
jsr pc,backspace
mov r0,savk1
dec w(r1)
jsr pc,rewind
mov 2(sp),r1
jsr pc,fsfile
jsr pc,backspace
mov r0,savk2
dec w(r1)
mov k,r2
sub savk1,r2
add savk2,r2
mov k,savk
mov (sp)+,r1
tst r2
bmi 1f
jsr pc,add0
br 2f
1:
neg r2
jsr pc,removc
2:
mov r1,r3
mov (sp)+,r2
rts pc
/
/
/ case % for remaindering
/
case045:
jsr pc,dscale
mov $div3,r0
jsr pc,binop
jsr pc,pop
jsr pc,release
mov r4,r1
mov savk1,r0
add k,r0
jsr pc,putchar
jsr pc,push
jmp loop
/
/
binop:
jsr pc,(r0)
jsr pc,push
mov r2,r1
jsr pc,release
mov r3,r1
jsr pc,release
rts pc
/
eqk:
jsr pc,pop
jes eh
mov r1,-(sp)
jsr pc,pop
bec 1f
mov (sp)+,r1
jsr pc,push
jbr eh
1:
mov r1,-(sp)
mov 2(sp),r1
jsr pc,fsfile
jsr pc,backspace
mov r0,savk1
dec w(r1)
mov (sp),r1
jsr pc,fsfile
jsr pc,backspace
mov r0,savk2
dec w(r1)
cmp r0,savk1
beq 1f
blo 2f
mov savk2,savk
mov r0,r2
sub savk1,r2
mov 2(sp),r1
jsr pc,add0
mov r1,2(sp)
br 4f
2:
mov savk1,r2
sub savk2,r2
mov (sp),r1
jsr pc,add0
mov r1,(sp)
1:
mov savk1,savk
4:
mov 2(sp),r3
mov (sp)+,r2
tst (sp)+
rts pc
.bss
savk1: .=.+2
savk2: .=.+2
savk: .=.+2
.text
/
/
/ r2 = count
/ r1 = ptr
/ returns ptr in r1
add0:
mov r1,-(sp)
jsr pc,length
jsr pc,allocate
clr r0
1:
cmp r2,$1
blos 1f
jsr pc,putchar
sub $2,r2
br 1b
1:
mov r1,-(sp)
mov 2(sp),r1
jsr pc,rewind
1:
jsr pc,getchar
bes 1f
mov (sp),r1
jsr pc,putchar
mov r1,(sp)
mov 2(sp),r1
br 1b
1:
cmp r2,$1
bne 1f
mov (sp),r3
mov tenptr,r2
jsr pc,mul3
mov r1,(sp)
mov r3,r1
jsr pc,release
1:
mov 2(sp),r1
jsr pc,release
mov (sp)+,r1
tst (sp)+
rts pc
/ case i for input base
/
case151:
jsr pc,in151
jmp loop
/
in151:
jsr pc,pop
jes eh
jsr pc,scalint
mov r1,-(sp)
mov inbas,r1
mov (sp)+,inbas
jsr pc,release
rts pc
case111:
mov inbas,r1
jsr pc,length
inc r0
jsr pc,allocate
mov inbas,r0
jsr pc,move
clr r0
jsr pc,putchar /scale
jsr pc,push
jmp loop
/
.bss
inbas: .=.+2
.data
/
/
/ case o for output base
/
case157:
jsr pc,in157
jmp loop
/
in157:
jsr pc,pop
jes eh
jsr pc,scalint
mov r1,-(sp)
jsr pc,length
jsr pc,allocate
mov (sp),r0
jsr pc,move
jsr pc,fsfile
jsr pc,length
1:
cmp r0,$1
beq 1f
jsr pc,backspace
bpl 2f
jsr pc,chsign
jsr pc,length
br 1b
2:
clr sav
mov r0,-(sp)
2:
jsr pc,backspace
bes 2f
mov (sp),r2
clr r3
mul $100.,r2
add r0,r3
mov r3,(sp)
tst sav
beq 3f
mov r2,r0
clr r3
mov sav,r2
mul $100.,r2
mov r3,sav
add r0,sav
br 2b
3:
mov r2,sav
br 2b
2:
mov (sp)+,r0
tst sav
beq 2f
mov sav,r0
jsr pc,log2
add $16.,r0
mov r0,logo
br 3f
1:
jsr pc,backspace
2:
tst r0
bpl 1f
mov $15.,logo
br 3f
1:
jsr pc,log2
mov r0,logo
3:
jsr pc,release
mov basptr,r1
jsr pc,release
mov (sp),basptr
/
/ set field widths for output
/ and set output digit handling routines
/
mov (sp),r1
mov $bigout,outdit
jsr pc,length
cmp r0,$1.
bne 2f
jsr pc,fsfile
jsr pc,backspace
cmp r0,$16.
bhi 2f
mov $hexout,outdit
2:
jsr pc,length
jsr pc,allocate
mov (sp),r0
jsr pc,move
clr (sp)
jsr pc,fsfile
jsr pc,backspace
bpl 2f
add $1.,(sp)
jsr pc,chsign
2:
mov r1,r2
mov $1,r0
jsr pc,allocate
mov $-1,r0
jsr pc,putchar
mov r1,r3
jsr pc,add3
jsr pc,length
asl r0
add r0,(sp)
jsr pc,fsfile
jsr pc,backspace
cmp r0,$9.
blos 2f
add $1,(sp)
2:
jsr pc,release
mov r2,r1
jsr pc,release
mov r3,r1
jsr pc,release
mov (sp)+,fw
mov fw,fw1
dec fw1
cmp outdit,$hexout
bne 2f
mov $1,fw
clr fw1
2:
mov $70.,ll
cmp fw,$70.
blo 9f; rts pc; 9:
mov $70.,r1
clr r0
dvd fw,r0
mov r0,r1
mpy fw,r1
mov r1,ll
rts pc
case117:
mov basptr,r1
jsr pc,length
inc r0
jsr pc,allocate
mov basptr,r0
jsr pc,move
clr r0
jsr pc,putchar /scale
jsr pc,push
jmp loop
/
.data
fw: 1 /field width for digits
fw1: 0
ll: 70. /line length
.text
/
/
/ case k for skale factor
/
case153:
jsr pc,pop
jes eh
jsr pc,scalint
mov w(r1),r0
sub a(r1),r0
cmp r0,$1
jhi eh1
jsr pc,rewind
jsr pc,getchar
jmi eh1
mov r0,k
mov r1,-(sp)
mov scalptr,r1
jsr pc,release
mov (sp)+,scalptr
jmp loop
/
case113:
mov scalptr,r1
jsr pc,length
inc r0
jsr pc,allocate
mov scalptr,r0
jsr pc,move
clr r0
jsr pc,putchar
jsr pc,push
jmp loop
scalint:
jsr pc,fsfile
jsr pc,backspace
dec w(r1)
mov r0,r2
jsr pc,removc
rts pc
/
/ case ^ for exponentiation
/
case136:
jsr pc,pop
jes eh
jsr pc,scalint
jsr pc,fsfile
jsr pc,backspace
tst r0
bge 1f
inc negexp
jsr pc,chsign
1:
jsr pc,length
cmp r0,$3
jhis eh1
mov r1,r3
jsr pc,pop
jes eh
jsr pc,fsfile
jsr pc,backspace
mov r0,savk
dec w(r1)
mov r1,r2
jsr pc,exp3
mov r1,-(sp)
mov r2,r1
jsr pc,release
mov r3,r1
jsr pc,rewind
jsr pc,getchar
mov r0,-(sp)
jsr pc,getchar
bes 2f
mov r0,r1
mul $100.,r1
add (sp)+,r1
br 3f
2:
mov (sp)+,r1
3:
mul savk,r1
mov r1,r2
mov r3,r1
jsr pc,release
tst negexp
bne 4f
cmp k,savk
blo 1f
mov k,r3
br 2f
1:
mov savk,r3
2:
cmp r3,r2
bhis 4f
sub r3,r2
mov (sp)+,r1
mov r3,-(sp)
jsr pc,removc
mov (sp)+,r0
jsr pc,putchar
jsr pc,push
br 3f
4:
mov (sp)+,r1
mov r2,r0
jsr pc,putchar
jsr pc,push
3:
tst negexp
jeq loop
clr negexp
jsr pc,pop
mov r1,-(sp)
mov $2,r0
jsr pc,allocate
mov $1,r0
jsr pc,putchar
clr r0
jsr pc,putchar
jsr pc,push
mov (sp)+,r1
jsr pc,push
jmp case057
/
.bss
sav: .=.+2
negexp: .=.+2
.text
/
/ case v for square root
/
case166:
jsr pc,pop
jes eh
/
jsr pc,fsfile
jsr pc,backspace
mov r0,savk
dec w(r1)
mov w(r1),r2
sub a(r1),r2
tst r2
beq sqz
jsr pc,backspace
tst r0
jmi eh1
mov k,r2
asl r2
sub savk,r2
beq 1f
blo 2f
jsr pc,add0
br 1f
2:
neg r2
jsr pc,removc
1:
jsr pc,sqrt
mov k,r0
jsr pc,putchar
jsr pc,push
jmp loop
/
/
sqz:
mov savk,r0
jsr pc,putchar
jsr pc,push
jmp loop
.bss
sqtemp: .=.+2
.text
/
/
/ case [ for subroutine definition
/
case133:
clr -(sp)
clr r0
jsr pc,allocate
jsr pc,push
1: jsr pc,readc
cmp r0,$']
bne 3f
tst (sp)
beq 1f
dec (sp)
br 2f
3:
cmp r0,$'[
bne 2f
inc (sp)
2:
jsr pc,putchar
br 1b
/
1: tst (sp)+
jmp loop
/
/
/ case x for execute top of stack
/
case170:
jsr pc,in170
jmp loop
/
in170:
jsr pc,pop
jes eh
mov r1,-(sp)
tst *readptr
beq 1f
mov *readptr,r1
cmp r(r1),w(r1)
bne 1f
jsr pc,release
br 2f
1:
add $2,readptr
cmp readptr,$readtop
bhis 1f
2: mov (sp)+,r1
mov r1,*readptr
beq 2f
jsr pc,rewind
rts pc
2:
jsr pc,readc
cmp r0,$'\n
beq 3f
mov r0,savec
3:
rts pc
1:
nderr:
mov $1,r0
sys write; 1f; 2f-1f
jmp reset
1: <Nesting depth.\n>
2: .even
/
.data
readptr: readstack
.bss
readstack: .=.+100.
readtop:
.text
/
/ case ? for apl box function
/
case077:
add $2,readptr
cmp readptr,$readtop
bhis nderr
clr *readptr
in077:
mov source,-(sp)
clr source
jsr pc,readc
cmp r0,$'!
bne 1f
jsr pc,in041
mov (sp)+,source
br in077
1:
mov r0,savec
clr r0
jsr pc,allocate
2:
jsr pc,readc
jsr pc,putchar
1:
jsr pc,readc
jsr pc,putchar
cmp r0,$'\\
beq 2b
cmp r0,$'\n
bne 1b
mov (sp)+,source
mov r1,*readptr
jmp loop
/
/
/ case < for conditional execution
/
case074:
jsr pc,in074
ble neg074
jmp aff074
/
/
/ case !< for conditional execution
/
in74a:
jsr pc,in074
bgt inneg
jmp inaff
/
in074:
jsr pc,in055 /go subtract
jsr pc,pop
jsr pc,length
tst r0
beq 1f
jsr pc,fsfile
jsr pc,backspace
jsr pc,backspace
tst r0
1:
rts pc
/
aff074:
jsr pc,release
jsr pc,in154 /load from register
jmp case170
/
neg074:
jsr pc,release
jsr pc,readc
jmp loop
/
/
/ case = for conditional execution
/
case075:
jsr pc,in074
beq aff074
jmp neg074
/
/
/ case != for conditional execution
/
in75a:
jsr pc,in074
bne inaff
jmp inneg
/
/
/ case > for conditional execution
/
case076:
jsr pc,in074
bge neg074
jmp aff074
/
/
/ case !> for conditional execution
/
in76a:
jsr pc,in074
blt inneg
jmp inaff
/
inaff:
jsr pc,release
jsr pc,in154
jsr pc,in170
rts pc
/
inneg:
jsr pc,release
jsr pc,readc
rts pc
/
err:
mov $1,r0
sys write; 1f; 2f-1f
jmp reset
1: <Fatal error\n>; 2: .even
/
eh1:
jsr pc,release
eh:
movb ch,1f+2
mov $1,r0
sys write; 1f; 2f-1f
mov $readstack,readptr
mov errstack,sp
jmp loop
.data
1: <( ) ?\n>
2: .even
.text
/
/
/ routine to read and convert a number from the
/ input stream. Numbers beginnig with 0 are
/ converted as octal. Routine converts
/ up to next nonnumeric.
/
/
readin:
clr dp
clr dpt
clr r0
jsr pc,allocate
mov r1,-(sp)
mov strptr,r1
jsr pc,create
jsr pc,readc
1:
cmpb ch,$'0
blt 3f
cmpb ch,$'9
bgt 3f
mov ch,r0
sub $'0,r0
4:
tst dp
beq 8f
cmp dpt,$99.
beq 5f
inc dpt
8:
mov chptr,r1
jsr pc,create
tst r0
beq 2f
jsr pc,putchar
2: mov r1,chptr
mov (sp),r3
mov inbas,r2
jsr pc,mul3
mov r1,(sp)
mov r3,r1
jsr pc,release
mov (sp),r3
mov chptr,r2
jsr pc,add3
mov r1,(sp)
mov r3,r1
jsr pc,release
5:
jsr pc,readc
mov r0,ch
br 1b
3:
cmpb ch,$'A
blt 1f
cmpb ch,$'F
bgt 1f
mov ch,r0
sub $67,r0
br 4b
1:
cmpb ch,$134 /backslash
bne 1f
jsr pc,readc
br 5b
1:
cmpb ch,$'.
bne 1f
tst dp
bne 1f
inc dp
clr dpt
br 5b
1:
mov r0,savec
/
/ scale up or down
2:
tst dp
bne 1f
mov (sp)+,r1
clr r0
jsr pc,putchar
rts pc
1:
mov (sp),r1
jsr pc,scale
mov dpt,r0
jsr pc,putchar
tst (sp)+
rts pc
/
.bss
dp: .=.+2
dpt: .=.+2
.text
/
scale:
mov dpt,r2
jsr pc,add0
mov r1,-(sp)
mov $1,r0
jsr pc,allocate
mov dpt,r0
jsr pc,putchar
mov r1,r3
mov inbas,r2
jsr pc,exp3
mov r1,-(sp)
mov r3,r1
jsr pc,release
mov (sp)+,r2
mov (sp)+,r3
jsr pc,div3
mov r1,-(sp)
mov r2,r1
jsr pc,release
mov r3,r1
jsr pc,release
mov r4,r1
jsr pc,release
mov (sp)+,r1
rts pc
/
/ routine to read another character from the input
/ stream. If the caller does not want the character,
/ it is to be placed in the cell savec.
/ The routine exits to the system on end of file.
/ Character is returned in r0.
/
/ jsr pc,readc
/ movb r0,...
/
/
readc:
tst savec
beq 1f
movb savec,r0
bic $177400,r0
clr savec
rts pc
1:
tst *readptr
bne 1f
2: mov source,r0
sys read; ch; 1
bes eof
tst r0
beq eof
movb ch,r0
bic $177400,r0
rts pc
1:
mov r1,-(sp)
mov *readptr,r1
jsr pc,getchar
bes eof1
bic $177400,r0
mov r0,ch
mov (sp)+,r1
rts pc
/
eof:
tst source
beq 1f
clr source
br 2b
1:
sys exit
/
eof1:
mov *readptr,r1
beq 2f
jsr pc,release
2:
sub $2,readptr
mov (sp)+,r1
jmp readc
/
/
/ case p for print
/
case160:
cmp r5,$pdl
jeq eh
jsr pc,in160
jmp loop
/
/
in160:
/ mov $1,r0
/ sys write; sphdr; 4
br 1f
/
sphdr: < >
.even
/
1: cmp r5,$pdl
bne 1f
mov $1,r0
sys write; qm; 1
mov $1,r0
sys write; nl; 1
rts pc
/
/ do the conversion
/
1:
mov -2(r5),r1
jsr pc,printf
rts pc
/
/
/ case f for print the stack
/
case146:
mov r5,-(sp)
1:
cmp r5,$pdl
beq 2f
1:
jsr pc,in160
jsr pc,pop
cmp r5,$pdl
bne 1b
2:
mov $stable-2,r2
1:
tst (r2)+
cmp r2,$stable+254.
bhi 1f
/
mov (r2),r3
beq 1b
movb $'0,7f+3
mov r2,r0
sub $stable,r0
asr r0
movb r0,7f+1
3:
mov $1,r0
sys write; 7f; 8f-7f
.data
7: <" (0)">
8: .even
.text
mov 2(r3),r1
jsr pc,printf
tst (r3)
beq 1b
incb 7b+3
mov (r3),r3
br 3b
1:
mov (sp)+,r5
jbr loop
/
/
/ routine to convert to decimal and print the
/ top element of the stack.
/
/ jsr pc,printf
/
/
printf:
mov r4,-(sp)
mov r3,-(sp)
mov r2,-(sp)
mov r1,-(sp)
mov r0,-(sp)
clr -(sp)
jsr pc,rewind
2:
jsr pc,getchar
bes 2f
cmp r0,$143
blos 2b
cmp r0,$-1
beq 2b
bis $1,(sp)
br 2b
2:
tst (sp)+
beq 2f
jsr pc,length
mov r0,0f
mov a(r1),3f
mov $1,r0
sys 0; 9f
.data
9:
sys write; 3:.=.+2; 0:.=.+2
.text
jbr prout
2:
jsr pc,fsfile
jsr pc,backspace
bec 1f
mov $1,r0
sys write; asczero; 1
jbr prout
1:
jsr pc,length
mov r1,-(sp)
jsr pc,allocate
mov (sp),r0
mov r1,(sp)
jsr pc,move
mov ll,count
/ inc count
jsr pc,fsfile
jsr pc,backspace
mov r0,savk
dec w(r1)
jsr pc,backspace
cmpb r0,$-1
bne 2f
mov basptr,r1
jsr pc,fsfile
jsr pc,backspace
cmp r0,$-1
beq 2f
mov (sp),r1
jsr pc,chsign
mov $'-,ch
jsr pc,wrchar
br 1f
2:
/ mov $' ,ch
/ jsr pc,wrchar
1:
mov strptr,r1
jsr pc,create
mov basptr,r1
jsr pc,length
cmp r0,$1
jlo dingout
bne 1f
jsr pc,rewind
jsr pc,getchar
cmp r0,$1.
jeq unout
cmp r0,$-1
jeq dingout
cmp r0,$10.
jeq tenout
1:
mov log10,r1
mul savk,r1
clr r0
div logo,r0
mov r0,dout
clr ct
1:
mov (sp),r3
mov savk,r2
jsr pc,getdec
mov r1,decimal
clr dflg
mov (sp),r1
mov savk,r2
jsr pc,removc
mov r1,(sp)
1:
mov (sp),r3
mov basptr,r2
jsr pc,div3
mov r1,r2
mov (sp),r1
jsr pc,release
mov r2,(sp)
mov r4,r1
jsr pc,*outdit
mov (sp),r1
jsr pc,length
bne 1b
/
mov strptr,r1
jsr pc,fsfile
1:
jsr pc,backspace
bes 1f
mov r0,ch
jsr pc,wrchar
br 1b
1:
mov (sp)+,r1
jsr pc,release
tst savk
bne 1f
mov decimal,r1
jsr pc,release
br prout
1:
mov dot,ch
jsr pc,wrchar
mov strptr,r1
jsr pc,create
mov decimal,-(sp)
inc dflg
1:
mov (sp),r3
mov basptr,r2
jsr pc,mul3
mov r1,(sp)
mov r3,r1
jsr pc,release
mov (sp),r3
mov savk,r2
jsr pc,getdec
mov r1,(sp)
mov r3,r1
mov savk,r2
jsr pc,removc
jsr pc,*outdit
mov strptr,r1
inc ct
cmp ct,dout
blo 1b
mov (sp)+,r1
jsr pc,release
mov strptr,r1
jsr pc,rewind
1:
jsr pc,getchar
bes 1f
mov r0,ch
jsr pc,wrchar
br 1b
1:
/
/ cleanup, print new line and return
/
prout: mov $1,r0
sys write; nl; 1
mov (sp)+,r0
mov (sp)+,r1
mov (sp)+,r2
mov (sp)+,r3
mov (sp)+,r4
rts pc
/
/
/
/ r2 = count
/ r3 = pointer (not released)
/
.bss
dflg: .=.+2
dout: .=.+2
logo: .=.+2
log10: .=.+2
decimal: .=.+2
.text
getdec:
mov r3,-(sp)
mov r3,r1
jsr pc,rewind
jsr pc,length
jsr pc,allocate
mov r1,-(sp)
1:
cmp r2,$1
blt 1f
mov 2(sp),r1
jsr pc,getchar
mov (sp),r1
jsr pc,putchar
mov r1,(sp)
sub $2,r2
br 1b
1:
tst r2
beq 1f
mov tenptr,r2
mov (sp),r3
jsr pc,mul3
mov r1,(sp)
mov r3,r1
jsr pc,length
jsr pc,release
mov r0,r3
jsr pc,allocate
mov r1,-(sp)
mov 2(sp),r1
jsr pc,rewind
2:
tst r3
beq 2f
jsr pc,getchar
mov (sp),r1
jsr pc,putchar
mov r1,(sp)
dec r3
mov 2(sp),r1
br 2b
2:
clr r0
mov (sp),r1
jsr pc,putchar
mov 2(sp),r1
jsr pc,release
mov (sp),r3
mov tenptr,r2
jsr pc,div3
mov r1,(sp)
mov r3,r1
jsr pc,release
mov r4,r1
jsr pc,release
mov (sp)+,r1
tst (sp)+
mov (sp)+,r3
rts pc
1:
mov (sp)+,r1
mov (sp)+,r3
rts pc
tenout:
mov savk,ct
mov $2,r0
jsr pc,allocate
mov r1,-(sp)
mov 2(sp),r1
jsr pc,fsfile
jsr pc,backspace
mov r0,r3
clr r2
dvd $10.,r2
beq 1f
3:
add $60,r2
mov r2,r0
mov (sp),r1
jsr pc,putchar
mov r1,(sp)
1:
mov (sp),r1
add $60,r3
mov r3,r0
jsr pc,putchar
mov 2(sp),r1
1:
jsr pc,backspace
bec 2f
mov (sp),r1
jsr pc,length
cmp r0,ct
beq 4f
blo 5f
sub ct,r0
mov r0,ct
1:
jsr pc,getchar
mov r0,ch
jsr pc,wrchar
dec ct
bne 1b
jsr pc,getchar
bes 6f
jsr pc,backspace
4:
movb dot,ch
jsr pc,wrchar
1:
jsr pc,getchar
bes 1f
mov r0,ch
jsr pc,wrchar
br 1b
5:
sub r0,ct
movb dot,ch
jsr pc,wrchar
mov $60,ch
5:
jsr pc,wrchar
dec ct
bne 5b
br 1b
1:
6:
mov (sp)+,r1
jsr pc,release
mov (sp)+,r1
jsr pc,release
jbr prout
2:
mov r0,r3
clr r2
dvd $10.,r2
br 3b
dot: <.>
.even
ct: .=.+2
/
/
dingout:
clr -(sp)
br 1f
unout:
mov $1,-(sp)
1:
mov 2(sp),r1
mov savk,r2
jsr pc,removc
mov r1,2(sp)
mov strptr,r1
jsr pc,create
mov $-1,r0
jsr pc,putchar
mov r1,r3
1:
mov 2(sp),r1
jsr pc,length
beq 1f
mov r1,r2
jsr pc,add3
mov r1,2(sp)
mov r2,r1
jsr pc,release
mov $1,r0
tst (sp)
beq 2f
mov $'1,ch
jsr pc,wrchar
br 1b
2:
tst delflag
jne in177
sys write; ding; 3
br 1b
1:
tst (sp)+
mov (sp)+,r1
jsr pc,release
jmp prout
/
ding: < > /<bell prefix form feed>
sp5: <\\\n >
minus: <->
one: <1>
.even
.bss
count: .=.+2
.text
/
bigout:
mov r1,-(sp) /big digit
tst dflg
beq 1f
clr r0
jsr pc,allocate
mov r1,tptr
1:
mov strptr,r1
jsr pc,length
add fw,r0
dec r0
mov r0,-(sp) /end of field
clr -(sp) /negative
mov 4(sp),r1
jsr pc,length
bne 2f
mov $'0,r0
tst dflg
beq 3f
mov tptr,r1
jsr pc,putchar
mov r1,tptr
br 1f
3:
mov strptr,r1
jsr pc,putchar
br 1f
2:
mov 4(sp),r1 /digit
jsr pc,fsfile
jsr pc,backspace
bpl 2f
mov $1,(sp) /negative
jsr pc,chsign
2:
mov 4(sp),r3 /digit
mov r3,r1
jsr pc,length
beq 1f
mov tenptr,r2
jsr pc,div3
mov r1,4(sp) /digit
mov r3,r1
jsr pc,release
mov r4,r1
jsr pc,rewind
jsr pc,getchar
jsr pc,release
add $'0,r0
tst dflg
beq 3f
mov tptr,r1
jsr pc,putchar
mov r1,tptr
br 2b
3:
mov strptr,r1
jsr pc,putchar
br 2b
1:
tst dflg
beq 4f
mov tptr,r1
jsr pc,length
cmp r0,fw1
bhis 2f
mov fw1,r1
sub r0,r1
mov r1,-(sp)
mov strptr,r1
3:
mov $'0,r0
jsr pc,putchar
dec (sp)
bne 3b
tst (sp)+
2:
mov tptr,r1
jsr pc,fsfile
2:
mov tptr,r1
jsr pc,backspace
bes 2f
mov strptr,r1
jsr pc,putchar
br 2b
2:
mov tptr,r1
jsr pc,release
br 1f
4:
mov strptr,r1
jsr pc,length
cmp r0,2(sp) /end of field
bhis 1f
mov $'0,r0
jsr pc,putchar
br 1b
1:
tst (sp) /negative
beq 1f
mov $'-,r0
mov strptr,r1
dec w(r1)
jsr pc,putchar
1:
mov strptr,r1
mov $' ,r0
jsr pc,putchar
tst (sp)+
tst (sp)+
mov (sp)+,r1
jsr pc,release
rts pc
/
.bss
tptr: .=.+2
tenptr: .=.+2
.text
/
/
/
hexout:
mov r1,-(sp)
jsr pc,rewind
jsr pc,getchar
cmp r0,$16.
blo 1f
jmp err
1:
add $60,r0
cmp r0,$'9
blos 2f
add $'A-'9-1,r0
2:
mov strptr,r1
jsr pc,putchar
mov (sp)+,r1
jsr pc,release
rts pc
/
/
wrchar:
tst delflag
jne in177
mov $1,r0
tst count
bne 7f
sys write; sp5; 2
mov ll,count
mov $1,r0
7:
dec count
sys write; ch; 1
rts pc
/
/
/ case P for print an ascii string
/
/
case120:
jsr pc,pop
jes eh
jsr pc,length
mov r0,0f
mov a(r1),3f
mov $1,r0
sys 0; 9f
jsr pc,release
jmp loop
.data
9: sys write; 3:.=.+2; 0:.=.+2
.text
/
/
/ here for unimplemented stuff
/
junk:
movb r0,1f
mov $1,r0
sys write; 1f; 2f-1f
jmp loop
.data
1: <0 not in switch.\n>
2: .even
.text
/
/
/
/ routine to place one word onto the pushdown list
/ Error exit to system on overflow.
/
/
push:
mov r1,(r5)+
cmp r5,$pdltop
bhis pdlout
rts pc
/
pdlout:
mov $1,r0
sys write; 1f; 2f-1f
jmp reset
1: <Out of pushdown.\n>
2: .even
/
/
/ routine to remove one word from the pushdown list
/ carry bit set on empty stack
/
/
/ jsr pc,pop
/
pop:
cmp r5,$pdl
bhi 1f
clr r1
sec
rts pc
1: mov -(r5),r1
clc
rts pc
/
/
/
/
.data
outdit: hexout
.bss
source: .=.+2
savec: .=.+2
ch: .=.+2
.text
nl: <\n>
asczero: <0>
qm: <?\n>
.even
/
.bss
chptr: .=.+2
strptr: .=.+2
basptr: .=.+2
scalptr: .=.+2
errstack:.=.+2
/
stable: .=.+512.
.text
casetab:
case012; 012 /nl
loop; 040 /sp
case041; 041 /!
case045; 045 /%
case052; 052 /*
case053; 053 /+
case055; 055 /-
case060; 056 /.
case057; 057 //
case060; 060 /0
case060; 061 /1
case060; 062 /2
case060; 063 /3
case060; 064 /4
case060; 065 /5
case060; 066 /6
case060; 067 /7
case060; 070 /8
case060; 071 /9
case072; 072 /:
case073; 073 /;
case074; 074 /<
case075; 075 /=
case076; 076 />
case077; 077 /?
case060; 101 /A
case060; 102 /B
case060; 103 /C
case060; 104 /D
case060; 105 /E
case060; 106 /F
case111; 111 /I
case113; 113 /K
case114; 114 /L
case117; 117 /O
case120; 120 /P
case121; 121 /Q
case123; 123 /S
case166; 126 /V
case170; 130 /X
case172; 132 /Z
case133; 133 /[
case136; 136 /^
case137; 137 /_
case143; 143 /c
case144; 144 /d
case146; 146 /f
case151; 151 /i
case153; 153 /k
case154; 154 /l
case157; 157 /o
case160; 160 /p
case161; 161 /q
case163; 163 /s
case166; 166 /v
case170; 170 /x
case172; 172 /z
0;0
/
.bss
pdl: .=.+1000.
pdltop:
.text
reset:
clr r0
sys seek; 0; 2
1:
clr r0
sys read; rathole; 1
bes 1f
tst r0
beq 1f
cmpb rathole,$'q
bne 1b
1:
sys exit
.bss
rathole: .=.+2
.text