***************************************
**
iafcc stb maxln,u fcc,fcb,rmb
 tst phase,u chk phase and
 beq iafcx exit if 1
 leax inst1,u
 stx gaddr,u
iafc0 ldb instx,u
 cmpb #$43 fcc
 bne iafc5
 anda #$7f mask off parity bit
 cmpa #$1f control chars
 bls iafc2
 cmpa #maxprn max printable
 bhi iafc2
 cmpa #$22 "
 bne iafc8
iafc2 ldb instx,u
 leax inst1,u
 cmpx gaddr,u
 bne iafc3
 cmpb #$43 c
 bne iafcx
 ldb #$48 fcc->fcb
 stb instx,u
iafcx lbra next2 get next and return
iafc3 ldx gaddr,u
 cmpb #$43
 bne iafc4
 ldd #$2204 fcc/fcs "..."
 std ,x
iafc4 rts return for fcc
iafc5 cmpb #$52 r
 bne iafc8
 ldd saddr,u
 pshs d
iafc6 lbsr getin get next byte
 ldb insty,u
 cmpb #$52 r
 bne iafc7
 ldy daddr,u chk labeled
 lbsr adalx
 bcs iafc7
 lbsr ckend chk end of program
 bls iafc6
iafc7 ldd saddr,u end of rmb range
 subd ,s++
 std rmblth,u set rmb length
 rts
iafc8 leax inst1,u
 cmpx gaddr,u
 beq iafc9
 ldy daddr,u
 lbsr adalx chk label
 bcs iafc2
iafc9 ldx gaddr,u
 sta ,x+
 stx gaddr,u
 cmpa instr,u check for fcs
 beq iafca
 lda fccxx+3,u c->s
 ora #$10
 sta fccxx+3,u fcs
 lbsr getin
 lbra iafc2
iafca lbsr getin
 ldb fllth,u
 cmpb maxln,u
 lbeq iafc2
 ldb instx,u
 cmpb insty,u
 lbne iafc2
 lbra iafc0
**
adald ldd raddr,u add a data label
adale pshs a flag as data
 lda zulabe,u prefix u/z
 sta lauorz,u
 puls a
 bra adalv
adalw ldd raddr,u add a data label
adalu pshs a flag as data
 lda ulabel,u prefix u
 sta lauorz,u
 puls a
 bra adalv
adalb ldd raddr,u add a prog label
adal0 pshs a flag as label
 lda zlabel,u prefix z
 sta lauorz,u
 puls a
adalv pshs d,y
 tfr d,y
 bsr adall chk labels
 bcs adatx branch if there
 lda lauorz,u
 ldx addre,u
 cmpx alimit,u chk for overflow
 lbhs tablab
 sty ,x++ add to list
 sta ,x+
 stx addre,u
 leax -$03,x bubble sort
adal1 cmpx typee,u back up
 bls adatx
 leax -$03,x
adal2 ldy ,x compare
 lda $02,x
 cmpy $03,x
 bls adatx
 pshs a,y
 ldy $03,x swap
 lda $05,x
 sty ,x
 sta $02,x
 puls a,y
 sty $03,x
 sta $05,x
 bra adal1
adatx puls d,y,pc
**
adalx pshs a chk prog labels
 lda zlabel,u prefix z
 sta lauorz,u
 puls a
 bra adall
adaly pshs a chk data labels
 lda ulabel,u prefix u
 sta lauorz,u
 puls a
adall ldx typee,u chk labels
 pshs d
 lda lauorz,u
adalp cmpx addre,u
 bhs adanf
 leax $03,x
 cmpy -$03,x
 bne adaix
 cmpa -$01,x
 bne adalp
adafo orcc #$01 successful, c=1
 leax -$03,x back up
 puls d,pc
adaix bhi adalp
adanf andcc #$fe unsuccessful, c=0
 puls d,pc
**
ckequ lda instx,u chk org's
 cmpa #$4b
 beq cktno
 tst dorgs,u
 beq cktno
 clr dorgs,u
ckeqw tst os9flx,u chk for OS/9
 bne cktno
 leax caddr,u xxxx
 lbsr xot4h
 leax orges,pcr org $
 lbsr xpdat
 leax caddr,u xxxx
 lbsr xot4h
 lbsr xcrlf
cktno ldx daddr,u chk equ's
 clr baddr,u
 dec fllth,u
 lda fllth,u
 ldb instx,u
 cmpb #$43 c
 beq ckeqa
 cmpb #$48 h
 beq ckeqa
 cmpb #$52 r
 bne ckeso
ckeqa ldx caddr,u
 clra
ckesx stx gaddr,u
 sta worka,u
 ldy gaddr,u
 lbsr adalx
 bcc ckenf
 tst worka,u chk offset
 beq ckexo
 leax gaddr,u xxxx
 lbsr xot4h
 lda #$02
 lbsr xoute
 lda zlabel,u z
 lbsr xoute
 leax gaddr,u xxxx
 lbsr xot4h
 leax bequb,pcr equ
 lbsr xpdat
 lbsr xpdat *+
 lda worka,u x
 adda #$30
 lbsr xoute
 lbsr xcrlf
ckenf lda worka,u
 beq ckext
 ldx gaddr,u
 deca
ckeso leax -$01,x
 bra ckesx
ckexo ldb instx,u chk ign
 cmpb #$4b
 bne ckexe
 leax gaddr,u
 lda zlabel,u prefix z
 lbra gnpea xxxx zxxxx equ $xxxx
ckexe tst equfl,u check equ flag
 beq ckexs
 leax caddr,u xxxx
 lbsr xot4h
 lda #$02
 lbsr xoute
 lda zlabel,u z
 lbsr xoute
 leax caddr,u xxxx
 lbsr xot4h
 leax bequb,pcr equ
 lbsr xpdat
 lda #$2a *
 lbsr xoute
 lbsr xcrlf
 bra ckext
ckexs inc baddr,u
ckext lda instx,u chk ign
 cmpa #$4b k
 beq ckexz
 leax caddr,u xxxx
 lbsr xot4h
 lda instx,u chk rmb
 cmpa #$52 r
 beq ckexy
 lda #$01 hex object
 lbsr xoute
 lda fllth,u
 inca
 beq ckexy
 cmpa #$06
 blo ckexu
 lda #$05
ckexu sta worka,u
 leax inst1,u
ckexv lbsr xot2h
 dec worka,u
 bne ckexv
ckexy lda #$02 label tab
 lbsr xoute
 tst baddr,u
 beq ckexz
 lda zlabel,u z
 lbsr xoute
 leax caddr,u xxxx
 lbsr xot4h
ckexz rts
**
headr lbsr xcrlf start program file
 ldx crtfl,u
 stx confl,u
 lda disof,u
 sta dskfl,u
 lda names+5,u chk nam
 cmpa #$04
 beq headc
 leax names,u nam
 lbsr xpdat
 lbsr xcrlf
headc lda optes+5,u chk opt
 cmpa #$04
 beq headg
 leax optes,u opt
 lbsr xpdat
 lbsr xcrlf
headg clr column,u
 tst os9flx,u chk for OS/9
 lbeq headt
 lda comand,u chk view
 cmpa #$56 v
 lbeq headt
 leax sysdef,pcr system definitions
 lbsr xpdat
 lda obatre,u version
 lbsr xothr
 lbsr xcrlf
 ldd obname,u module name offset
 lbsr adal0
 leax lmodul,pcr mod endmod,namemd,
 lbsr xpdat
 lda obtyla,u type and language
 anda #$f0
 lsra
 leax ltypes,pcr type
 leax a,x
 lbsr xpdat
 leax llangs,pcr +objct,
 lbsr xpdat
 lda obatre,u attributes and version
 bpl headq
 leax lreent,pcr reent+
 lbsr xpdat
headq leax lversi,pcr version,xferad,endmem
 lbsr xpdat
 lbsr xcrlf
 ldd #$0000 xxxx
 pshs d
 tfr s,x
 lbsr xot4h
 leax orges,pcr org $0000 for storage
 lbsr xpdat
 tfr s,x
 lbsr xot4h xxxx
 puls d
 lbsr xcrlf
 lbsr gendat generate data rmb's and equ's
headh leax lemmod,pcr module header
 lbsr xpdat endmem
 lbsr xpdat equ .
 lbsr xcrlf
 lda names+5,u chk nam
 cmpa #$04
 beq headn
 leax names,u nam
 lbsr xpdat
 lbsr xcrlf
headn ldx #$ffff gen absolute equ's
 stx caddr,u
 ldx #$0000
 stx raddr,u
 lda xlabel,u prefiz x
 sta zulabe,u
 lbsr gnequ
 ldx #$000c gen equ's in header
 stx caddr,u
 ldx #$0000
 stx raddr,u
 lda zlabel,u prefiz z
 sta zulabe,u
 lbsr gnequ
 lda ulabel,u prefiz u
 sta zulabe,u
headt ldd curmod,u reset curr locn
 std inlrec,u zap curr locn
 lda curmod+2,u
 sta inlrec+2,u
 ldx faddr,u gen out-of-range equ's
 beq headx
 leax -$01,x
 stx caddr,u
 ldx #$0000
 stx raddr,u
 lda zlabel,u prefiz z
 sta zulabe,u
 lbsr gnequ
headx inc dorgs,u
 rts
**
gendat equ * generate data rmb's and equ's
 lda ulabel,u prefix u
 sta zulabe,u
 ldx obstor,u
 lbeq gendeq
 leax -$01,x
 stx caddr,u
 ldx #$0000
 stx raddr,u
 stx zaddr,u
 ldx typee,u gen data rmb's
genrm1 stx gaddr,u
 cmpx addre,u
 beq genrm5
 bhi gendeq
 ldy $00,x
 cmpy raddr,u
 beq genrm6
genrm2 blo genrm4
 cmpy caddr,u
genrm3 bls genrm6
genrm4 leax $03,x
 bra genrm1
genrm5 ldy obstor,u force last rmb
 bra genrm7
genrm6 lda zulabe,u prefix u/z
 cmpa $02,x
 bne genrm8
genrm7 stx gaddr,u
 tfr y,d
 subd zaddr,u compute rmb offset
 bls genrm8 chk for non-positive
 pshs d
 leax zaddr,u xxxx
 lbsr xot4h
 lda #$02
 lbsr xoute
 lda zulabe,u prefix u
 lbsr xoute
 leax zaddr,u xxxx
 lbsr xot4h
 leax rmbes,pcr rmb $
 lbsr xpdat
 tfr s,x
 lbsr xot4h
 lbsr xcrlf
 puls d
 sty zaddr,u remember current address
genrm8 ldx gaddr,u get next label
 bra genrm4
gendeq ldx obstor,u gen out-of-range data equ's
 stx raddr,u
 ldx #$ffff
 stx caddr,u
 lbsr gnequ
 rts
**
ender ldx daddr,u end text file
 beq ende0 gen out-of-range equ's
 stx raddr,u
 ldx #$ffff
 stx caddr,u
 lda zlabel,u prefix z
 sta zulabe,u
 lbsr gnequ
ende0 lda comand,u chk view
 cmpa #$56 v
 beq ende3
 tst os9flx,u chk for OS/9
 beq ende1
 leax endos9,pcr emod
 lbsr xpdat endmod equ *
 leax lnamem,pcr namemd equ
 lbsr xpdat
 lda zlabel,u z
 lbsr xoute z/$
 leax obname,u
 lbsr xot4h xxxx
 lbsr xcrlf
 leax lxfera,pcr xferad equ
 lbsr xpdat
 lda zlabel,u z
 lbsr xoute z/$
 leax obxfer,u xfer offset
 lbsr xot4h xxxx
 lbsr xcrlf
ende1 leax endes,pcr end
 lbsr xpdat
 tst os9flx,u chk for OS/9
 bne ende2
 ldx xaddr,u chk xfer addr
 leax $01,x
 beq ende2
 lda zlabel,u z
 lbsr xoute
 leax xaddr,u xxxx
 lbsr xot4h
ende2 lbsr xcrlf
**
ende3 lda #$01 reset flags and close files
 sta confl,u
 clr phase,u
 tst prtfl,u chk for printer output
 beq endep
 clr prtfl,u close printer file
 clr prfile,u
 leax prblok,u force last block
 lbsr fob
 bcc endpe
 lda #$02 error
 leax errprz,pcr
 ldy #errprl
 os9 I$WritLn
endpe lda prblok+iobfd+1,u close it
 clr prblok+iobfd,u
 clr prblok+iobfd+1,u
 os9 I$Close
 bcc endep
 lda #$02
 leax errprz,pcr
 ldy #errprl
 os9 I$WritLn
endep tst dskfl,u chk for disk output
 beq endex
 clr disof,u close output file
 clr dskfl,u
 clr otfile,u
 leax otblok,u force last block
 lbsr fob
 bcc endxe
 lda #$02 error
 leax errorz,pcr
 ldy #errorl
 os9 I$WritLn
endxe lda otblok+iobfd+1,u close it
 clr otblok+iobfd,u
 clr otblok+iobfd+1,u
 os9 I$Close
 bcc endex
 lda #$02
 leax errorz,pcr
 ldy #errorl
 os9 I$WritLn
endex lbra xcrlf
**
gnequ ldx typee,u out-of-range equ's
gneq1 stx gaddr,u
 cmpx addre,u
 beq gneqx
 ldd $00,x
 cmpd raddr,u
 beq gneq6
gneq2 blo gneq4
 cmpd caddr,u
gneq3 bls gneq6
gneq4 leax $03,x
 bra gneq1
gneq6 stx gaddr,u
 lda zulabe,u prefix u/z
 cmpa $02,x
 bne gneq7
 bsr gnpea
gneq7 ldx gaddr,u
 bra gneq4
gneqx rts
**
gnpea pshs a gen xxxx zxxxx equ $xxxx
 stx baddr,u xxxx
 lbsr xot4h
 lda #$02
 lbsr xoute
 puls a label prefix
 lbsr xoute
 ldx baddr,u xxxx
 lbsr xot4h
 leax bequb,pcr equ
 lbsr xpdat
 lda #$24 $
 lbsr xoute
 ldx baddr,u xxxx
 lbsr xot4h
 lbra xcrlf
**