MACRO
&lab short &a
 aif c:&a=0,.allshort
 lclb &m
 lclb &m1
 lclb &m2
&m1 setb ("&a"="M").OR.("&a"="m")
&m2 setb ("&a"="A").OR.("&a"="a")
&m setb (&m1).OR.(&m2)
 aif &m=0,.shorti
 sep #%00100000
 longa off
 mexit
.shorti
 sep #%00010000
 longi off
 mexit
.allshort
 sep #%00110000
 longa off
 longi off
 mend
 MACRO
&lab long &a
 aif c:&a=0,.alllong
 lclb &m
 lclb &m1
 lclb &m2
&m1 setb ("&a"="M").OR.("&a"="m")
&m2 setb ("&a"="A").OR.("&a"="a")
&m setb (&m1).OR.(&m2)
 aif &m=0,.longi
 rep #%00100000
 longa on
 mexit
.longi
 rep #%00010000
 longi on
 mexit
.alllong
 rep #%00110000
 longa on
 longi on
 mend
 MACRO
&lab subroutine &parms,&work
&lab anop
 aif c:&work,.a
 lclc &work
&work setc 0
.a
 gbla &totallen
 gbla &worklen
&worklen seta &work
&totallen seta 0
 aif c:&parms=0,.e
 lclc &len
 lclc &p
 lcla &i
&i seta c:&parms
.b
&p setc &parms(&i)
&len amid &p,2,1
 aif "&len"=":",.c
&len amid &p,1,2
&p amid &p,4,l:&p-3
 ago .d
.c
&len amid &p,1,1
&p amid &p,3,l:&p-2
.d
&p equ &totallen+3+&work
&totallen seta &totallen+&len
&i seta &i-1
 aif &i,^b
.e
 tsc
 sec
 sbc #&work
 tcs
 inc a
 phd
 tcd
 mend
 MACRO
&lab return &r
&lab anop
 lclc &len
 aif c:&r,.a
 lclc &r
&r setc 0
&len setc 0
 ago .h
.a
&len amid &r,2,1
 aif "&len"=":",.b
&len amid &r,1,2
&r amid &r,4,l:&r-3
 ago .c
.b
&len amid &r,1,1
&r amid &r,3,l:&r-2
.c
 aif &len<>2,.d
 ldy &r
 ago .h
.d
 aif &len<>4,.e
 ldx &r+2
 ldy &r
 ago .h
.e
 aif &len<>10,.g
 ldy #&r
 ldx #^&r
 ago .h
.g
 mnote 'Not a valid return length',16
 mexit
.h
 aif &totallen=0,.i
 lda &worklen+1
 sta &worklen+&totallen+1
 lda &worklen
 sta &worklen+&totallen
.i
 pld
 tsc
 clc
 adc #&worklen+&totallen
 tcs
 aif &len=0,.j
 tya
.j
 rtl
 mend