MACRO
&lab long &stat
&lab anop
 lcla &t
 lcla &len
 lclc &ch
&t seta 0
&len seta l:&stat
.a
 aif &len=0,.b
&ch amid &stat,&len,1
 aif ("&ch"="x").or.("&ch"="y").or.("&ch"="i"),.i
 aif ("&ch"="a").or.("&ch"="m"),.m
.c
&len seta &len-1
 ago ^a
.i
 longi on
&t seta &t+16
 ago ^c
.m
 longa on
&t seta &t+32
 ago ^c
.b
 aif &t=0,.d
 rep #&t
.d
 mend
 MACRO
&lab short &stat
&lab anop
 lcla &t
 lcla &len
 lclc &ch
&t seta 0
&len seta l:&stat
.a
 aif &len=0,.b
&ch amid &stat,&len,1
 aif ("&ch"="x").or.("&ch"="y").or.("&ch"="i"),.i
 aif ("&ch"="a").or.("&ch"="m"),.m
.c
&len seta &len-1
 ago ^a
.i
 longi off
&t seta &t+16
 ago ^c
.m
 longa off
&t seta &t+32
 ago ^c
.b
 aif &t=0,.d
 sep #&t
.d
 mend
 MACRO
&lab Write &a1
&lab gsos $2013,&a1
 mend
 MACRO
&lab gsos &a1,&a2
&lab jsl $E100A8
 dc i2'&a1'
 dc i4'&a2'
 mend
 MACRO
&lab unlock &a1
&lab stz &a1
 MEND
 MACRO
&lab lock &a1
&lab lda #1
 tsb &a1
 beq *+6
 cop $7F
 bra *-7
 MEND
 MACRO
&lab key
&lab dc i2'0'
 MEND
 macro
&lab Read &a1
&lab gsos $2012,&a1
 mend
 macro
&lab Flush &a1
&lab gsos $2015,&a1
 mend