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zmim_pico.bas
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' Transpiled on 01-08-2020 19:19:55
' Copyright (c) 2020 Thomas Hugo Williams
'
' Hand-optimised PicoMite version derived from CMM2 version by Peter Mather
If MM.Device$<>"Colour Maximite"Then
Option Explicit On
Option Default Integer
EndIf
'Mode 1
Dim m(64*1024/8+16)
Dim MAD=Peek(VarAddr m())+8
Dim fsz
Dim bst
Function rp()
rp=LGetByte(m(),pc)
Inc pc
End Function
Function rb(a)
rb=LGetByte(m(),a)
End Function
Function rw(a)
rw=LGetByte(m(),a)*256+LGetByte(m(),a+1)
End Function
Sub wb(a,x)
Poke Byte MAD+a,x
End Sub
Sub ww(a,x)
Poke Byte MAD+a,x\256
Poke Byte MAD+a+1,x Mod 256
End Sub
Sub mem_init(f$)
Local ad,i,j,s$,sz
cou("Loading '"+f$+"'"):cen()
cou("0% ... ")
sz=MM.Info(filesize f$)
Open f$ For Input As #1
j=1
Do
s$=Input$(255,#1)
If Len(s$)=0 Then Exit
LongString Append m(),s$
ad=ad+Len(s$)
If ad>j*sz\10 Then cou(Str$(j*10)+"% ... "):j=j+1
Loop
cou("100%"):cen()
cou("Read "+Str$(ad)+" bytes"):cen()
Close #1
bst=rw(&h0E)
fsz=rw(&h1A)*2
If fsz>ad Then Error "Story file is truncated"
End Sub
Dim stk(511)
Dim sp
Function spo()
sp=sp-1
spo=stk(sp)
End Function
Sub spu(x)
stk(sp)=x
Inc sp
End Sub
Function spe(i)
If i>=sp Then Error "Attempt to peek beyond stack pointer"
spe=stk(i)
End Function
Sub spk(i,x)
If i>=sp Then Error "Attempt to poke beyond stack pointer"
If x<0 Or x>&hFFFF Then Error "Invalid unsigned 16-bit value"
stk(i)=x
End Sub
Dim gva
Function vge(i)
If Not i Then
Inc sp,-1
vge=stk(sp)
ElseIf i<16 Then
vge=stk(fp+i+4)
ElseIf i<=255 Then
vge=rw(gva+2*(i-16))
Else
Error "Unknown variable "+Str$(i)
EndIf
End Function
Sub vse(i,x)
If Not i Then
spu(x)
ElseIf i<16 Then
stk(fp+i+4)=x
ElseIf i<=255 Then
ww(gva+2*(i-16),x)
Else
Error "Unknown variable "+Str$(i)
EndIf
End Sub
Dim pc
Dim oc=0
Dim osz=0
Dim oa(4)
Dim ot(4)
Dim ov(4)
Dim st=0
Dim br=0
Sub de_init()
Local i,s$,x
Read x
Dim o0$(x-1)LENGTH 12
For i=0 To x-1:Read s$:o0$(i)=de_format$(s$):Next i
Read x
Dim o1$(x-1)LENGTH 14
For i=0 To x-1:Read s$:o1$(i)=de_format$(s$):Next i
Read x
Dim o2$(x-1)LENGTH 15
For i=0 To x-1:Read s$:o2$(i)=de_format$(s$):Next i
Read x
Dim o3$(x-1)LENGTH 14
For i=0 To x-1:Read s$:o3$(i)=de_format$(s$):Next i
End Sub
Dim dec_op, dec_s$, dec_sn
Function dec(tr)
If tr Then cou(Hex$(pc)+": ")
dec_op=LGetByte(m(),pc)
Inc pc
If dec_op<128 Then
dlo(dec_op)
dec_s$=o2$(oc)
ElseIf dec_op<192 Then
dsh(dec_op)
If dec_op<176 Then dec_s$=o1$(oc)Else dec_s$=o0$(oc)
Else
dva(dec_op)
If dec_op<224 Then dec_s$=o2$(oc)Else dec_s$=o3$(oc)
EndIf
dec_sn=Peek(var dec_s$,1)
If dec_sn=66 Then
st=-1
br=dbr()
ElseIf dec_sn=83 Then
st=LGetByte(m(),pc):Inc pc
br=0
ElseIf dec_sn=88 Then
st=LGetByte(m(),pc):Inc pc
br=dbr()
Else
st=-1
br=0
EndIf
If tr Then dmp_op(Mid$(dec_s$,2))
dec=dec_op
End Function
Sub dlo(op)
oc=op And 31
osz=2
ov(0)=LGetByte(m(),pc):Inc pc
ov(1)=LGetByte(m(),pc):Inc pc
If op<=31 Then
ot(0)=1:oa(0)=ov(0)
ot(1)=1:oa(1)=ov(1)
ElseIf op<=63 Then
ot(0)=1:oa(0)=ov(0)
ot(1)=2:oa(1)=vge(ov(1))
ElseIf op<=95 Then
ot(0)=2:oa(0)=vge(ov(0))
ot(1)=1:oa(1)=ov(1)
Else
ot(0)=2:oa(0)=vge(ov(0))
ot(1)=2:oa(1)=vge(ov(1))
EndIf
End Sub
Sub dsh(op)
oc=op And 15
osz=1
If op<=143 Then
ot(0)=0:ov(0)=LGetByte(m(),pc)*256:Inc PC: Inc ov(0),LGetByte(m(),pc):Inc pc:
oa(0)=ov(0)
ElseIf op<=159 Then
ot(0)=&b01:ov(0)=LGetByte(m(),pc):Inc pc:oa(0)=ov(0)
ElseIf op<=175 Then
ot(0)=&b10:ov(0)=LGetByte(m(),pc):Inc pc:oa(0)=vge(ov(0))
Else
osz=0
EndIf
End Sub
Sub dva(op)
Local i,x
oc=op And 31
osz=4
x=LGetByte(m(),pc):Inc pc
For i=0 To 3
ot(i)=(x>>6) And 3
If ot(i)=0 Then
ov(i)=rp()*256+rp():oa(i)=ov(i)
ElseIf ot(i)=1 Then
ov(i)=LGetByte(m(),pc):Inc pc:oa(i)=ov(i)
ElseIf ot(i)=2 Then
ov(i)=LGetByte(m(),pc):Inc pc:oa(i)=vge(ov(i))
Else
osz=osz-1
EndIf
x=x*4
Next i
End Sub
Function dbr()
Local a,of,x
a=LGetByte(m(),pc):Inc pc
of=a And 63
If (a And 64)=0 Then
of=256*of+LGetByte(m(),pc):Inc pc
If a And 32 Then of=of-16384
EndIf
x=pc+of-2
If a And 128 Then x=x Or &h80000
dbr=x
End Function
Function de_format$(a$)
Local p,s$
If Instr(a$," SB")>0 Then
s$="X"
ElseIf Instr(a$," B")>0 Then
s$="B"
ElseIf Instr(a$," S")>0 Then
s$="S"
Else
s$=" "
EndIf
p=Instr(a$," ")
If p=0 Then p=Len(a$)+1
s$=s$+Left$(a$,p-1)
de_format$=s$
End Function
Data 14
Data "RTRUE","RFALSE","PRINT","PRINT_RET","NOP"
Data "SAVE B","RESTORE B","RESTART","RET_POPPED","POP"
Data "QUIT","NEW_LINE","SHOW_STATUS","VERIFY B"
Data 16
Data "JZ B","GET_SIBLING SB","GET_CHILD SB","GET_PARENT S","GET_PROP_LEN S"
Data "INC","DEC","PRINT_ADDR","Unknown&h8","REMOVE_OBJ"
Data "PRINT_OBJECT","RET","JUMP","PRINT_PADDR","LOAD S"
Data "NOT S"
Data 25
Data "Unknown&h0","JE B","JL B","JG B","DEC_CHK B"
Data "INC_CHK B","JIN B","TEST B","OR S","AND S"
Data "TEST_ATTR B","SET_ATTR","CLEAR_ATTR","STORE","INSERT_OBJ"
Data "LOADW S","LOADB S","GET_PROP S","GET_PROP_ADDR S","GEN_NEXT_PROP S"
Data "ADD S","SUB S","MUL S","DIV S","MOD S"
Data 22
Data "CALL S","STOREW","STOREB","PUT_PROP","READ"
Data "PRINT_CHAR","PRINT_NUM","RANDOM S","PUSH","PULL"
Data "SPLIT_WINDOW","SET_WINDOW","Unknown&hC","Unknown&hD","Unknown&hE"
Data "Unknown&hF","Unknown&h10","Unknown&h11","Unknown&h12","OUTPUT_STREAM"
Data "INPUT_STREAM","SOUND_EFFECT"
Dim fp
Dim num_bp
Dim nop
Dim ztrace
Dim exe_pc,exe_sp,exe_op
Function exe(tr)
exe_pc=pc:exe_sp=sp
exe_op=dec(tr)
Inc nop
If exe_op<128 Then
exe=e2o()
ElseIf exe_op<&hB0 Then
exe=e1o()
ElseIf exe_op<&hC0 Then
exe=e0o()
ElseIf exe_op<&hE0 Then
exe=e2o()
Else
exe=evo()
EndIf
If exe=1 Then
cou("Unsupported instruction "+hx$(op,2)):cen()
ElseIf exe=2 Then
cou("Unimplemented instruction "+hx$(op,2)):cen()
EndIf
If exe<>0 Then pc=exe_pc:sp=exe_sp
End Function
Function e2o()
Local a,b,x,y,_
a=oa(0)
b=oa(1)
If oc=1 Then
x=(a=b)
If (Not x)And(osz>2)Then x=(a=oa(2))
If (Not x)And(osz>3)Then x=(a=oa(3))
ebr(x,br)
ElseIf oc=2 Then
If a>32767 Then a=a-65536
If b>32767 Then b=b-65536
ebr(a<b,br)
ElseIf oc=3 Then
If a>32767 Then a=a-65536
If b>32767 Then b=b-65536
ebr(a>b,br)
ElseIf oc=4 Then
x=vge(a)
If x>32767 Then x=x-65536
If b>32767 Then b=b-65536
x=x-1
y=x<b
If x<0 Then x=65536+x
vse(a,x)
ebr(y,br)
ElseIf oc=5 Then
x=vge(a)
If x>32767 Then x=x-65536
If b>32767 Then b=b-65536
x=x+1
y=x>b
If x<0 Then x=65536+x
vse(a,x)
ebr(y,br)
ElseIf oc=6 Then
x=ob_rel(a,4)
ebr(x=b,br)
ElseIf oc=7 Then
ebr((a And b)=b,br)
ElseIf oc=8 Then
vse(st,a Or b)
ElseIf oc=9 Then
vse(st,a And b)
ElseIf oc=10 Then
x=oat(a,b)
ebr(x=1,br)
ElseIf oc=11 Then
_=oat(a,b,1,1)
ElseIf oc=12 Then
_=oat(a,b,1,0)
ElseIf oc=13 Then
If a=0 Then spk(sp-1,b)Else vse(a,b)
ElseIf oc=14 Then
oin(a,b)
ElseIf oc=15 Then
x=rw(a+2*b)
vse(st,x)
ElseIf oc=16 Then
x=rb(a+b)
vse(st,x)
ElseIf oc=17 Then
x=opg(a,b)
vse(st,x)
ElseIf oc=18 Then
x=opa(a,b)
vse(st,x)
ElseIf oc=19 Then
x=onp(a,b)
vse(st,x)
ElseIf oc<25 Then
If a>32767 Then a=a-65536
If b>32767 Then b=b-65536
If oc=20 Then
x=a+b
ElseIf oc=21 Then
x=a-b
ElseIf oc=22 Then
x=a*b
ElseIf oc=23 Then
x=a\b
Else
x=a Mod b
EndIf
If x<0 Then x=65536+x
vse(st,x)
Else
e2o=1
EndIf
End Function
Function e1o()
Local a,x
a=oa(0)
If oc=0 Then
ebr(a=0,br)
ElseIf oc=1 Then
x=ob_rel(a,5)
vse(st,x)
ebr(x<>0,br)
ElseIf oc=2 Then
x=ob_rel(a,6)
vse(st,x)
ebr(x<>0,br)
ElseIf oc=3 Then
x=ob_rel(a,4)
vse(st,x)
ElseIf oc=4 Then
x=opl(a)
vse(st,x)
ElseIf oc=5 Then
x=vge(a)
If x>32767 Then x=x-65536
x=x+1
If x<0 Then x=65536+x
vse(a,x)
ElseIf oc=6 Then
x=vge(a)
If x>32767 Then x=x-65536
x=x-1
If x<0 Then x=65536+x
vse(a,x)
ElseIf oc=7 Then
pzs(a)
ElseIf oc=9 Then
ore(a)
ElseIf oc=10 Then
opr(a)
ElseIf oc=11 Then
ert(a)
ElseIf oc=12 Then
If a And &h8000 Then a=a-65536
pc=pc+a-2
ElseIf oc=13 Then
pzs(a*2)
ElseIf oc=14 Then
If a=0 Then x=spe(sp-1)Else x=vge(a)
vse(st,x)
ElseIf oc=15 Then
x=a Xor &HFFFF
vse(st,x)
Else
e1o=1
EndIf
End Function
Function e0o()
Local x
If oc=&h0 Then
ert(1)
ElseIf oc=1 Then
ert(0)
ElseIf oc=2 Then
pzs(pc)
ElseIf oc=3 Then
pzs(pc)
cen()
ert(1)
ElseIf oc=4 Then
ElseIf oc=5 Then
If csc And &b10 Then
cou("IGNORED 'save' command read from script"):cen()
Else
x=zsv()
ebr(x,br)
EndIf
ElseIf oc=6 Then
If csc And &b10 Then
cou("IGNORED 'restore' command read from script"):cen()
Else
x=zsv(1)
EndIf
ElseIf oc=7 Then
If csc And &b10 Then
cou("IGNORED 'restart' command read from script"):cen()
Else
main_init()
For x=0 To 10:cen():Next x
EndIf
ElseIf oc=8 Then
x=spo()
ert(x)
ElseIf oc=9 Then
sp=sp-1
ElseIf oc=10 Then
e0o=4
ElseIf oc=11 Then
cen()
ElseIf oc=12 Then
ess()
ElseIf oc=13 Then
ebr(1,br)
Else
e0o=1
EndIf
End Function
Function evo()
Local x,_
If oc=&h0 Then
ecl(st)
ElseIf oc=1 Then
ww(oa(0)+2*oa(1),oa(2))
ElseIf oc=2 Then
wb(oa(0)+oa(1),oa(2))
ElseIf oc=3 Then
ob_prop_set(oa(0),oa(1),oa(2))
ElseIf oc=4 Then
evo=erd(oa(0),oa(1))
ElseIf oc=5 Then
cou(Chr$(oa(0)))
ElseIf oc=6 Then
x=oa(0)
If x>32767 Then x=x-65536
cou(Str$(x))
ElseIf oc=7 Then
x=oa(0)
If x>32767 Then x=x-65536
x=era(x)
vse(st,x)
ElseIf oc=8 Then
spu(oa(0))
ElseIf oc=9 Then
x=spo()
If oa(0)=0 Then spk(sp-1,x)Else vse(oa(0),x)
ElseIf oc=19 Then
evo=2
ElseIf oc=20 Then
evo=2
ElseIf oc=21 Then
Else
evo=1
EndIf
End Function
Dim ebr_x
Sub ebr(z,br)
If Not(z=(br And &h80000)>0)Then Exit Sub
ebr_x=br And &h7FFFF
If ebr_x=pc-1 Then ert(1):Exit Sub
If ebr_x=pc-2 Then ert(0):Exit Sub
pc=ebr_x
End Sub
Sub ert(x)
Local st,_
sp=fp+4
pc=spo()*&h10000+spo()
st=spo()
fp=spo()
vse(st,x)
If ztrace Then dmp_stack()
End Sub
Sub ecl(st)
Local i,nl,x
If oa(0)=0 Then vse(st,0):Exit Sub
spu(fp)
fp=sp-1
spu(st)
spu(pc Mod &h10000)
spu(pc\&h10000)
pc=2*oa(0)
nl=rp()
spu(nl)
For i=1 To nl
x=rp()*256+rp()
If i<osz Then spu(oa(i))Else spu(x)
Next i
If ztrace Then dmp_routine(2*oa(0)):dmp_stack()
End Sub
Function erd(text_buf,parse_buf)
Local ad,c,i,n,word$,s$,t,wc
t=Timer
s$=LCase$(ci$("> ",1))
If Left$(s$,1)="*"Then erd=esp(s$)
Timer =t
If erd<>0 Then Exit Function
n=Len(s$)
For i=1 To n:wb(text_buf+i,Peek(Var s$,i)):Next i
wb(text_buf+n+1,0)
s$=s$+" "
For i=1 To n+1
c=Peek(Var s$,i)
If c=&h20 Or Instr(ds$(0),Chr$(c))>0 Then
If Len(word$)>0 Then
ad=dlk(word$)
ww(parse_buf+2+wc*4,ad)
wb(parse_buf+4+wc*4,Len(word$))
wb(parse_buf+5+wc*4,i-Len(word$))
wc=wc+1
word$=""
EndIf
If c<>&h20 Then
ad=dlk(Chr$(c))
ww(parse_buf+2+wc*4,ad)
wb(parse_buf+4+wc*4,1)
wb(parse_buf+5+wc*4,i-1)
wc=wc+1
EndIf
Else
word$=word$+Chr$(c)
EndIf
Next i
wb(parse_buf+1,wc)
End Function
Function esp(cmd$)
Local f$,_
esp=6
If cmd$="*break"Then
esp=0
ElseIf cmd$="*credits"Then
cecho(ss$(1)+"\credits.txt")
ElseIf cmd$="*replay"Then
If csc And &b10 Then
cou("IGNORED '*replay' command read from script")
Else
cou("Select a script file from '")
cou(ss$(3)+"\"+ss$(5)+"':")
cen()
f$=fi_choose$(ss$(3)+"\"+ss$(5),"*.scr")
If f$<>""Then
Open f$ For Input As #3
csc=csc Or &b10
EndIf
EndIf
cen()
ElseIf cmd$="*status"Then
ess()
Else
esp=0
EndIf
If esp=6 Then cou(">")
End Function
Function era(range)
Static x=7
Static a=1103515245
Static c=12345
Static m=2^31
If range=0 Then
x=Timer
Exit Function
ElseIf range<0 Then
x=Abs(range)
Exit Function
EndIf
x=(a*x+c)Mod m
era=1+Cint((range-1)*(x/m))
End Function
Sub ess()
Local x
x=vge(&h10):opr(x):cou(", ")
x=vge(&h11):cou("Score: "+Str$(x)+", ")
x=vge(&h12):cou("Moves: "+Str$(x))
cen()
End Sub
Dim csc
Dim cb$
Dim csp
Dim cli
Dim cco
Dim cx=1
Dim csi
Function ci$(p$,r)
Local s$
cou(p$)
cfl()
cli=0
If csc And &b10 Then
Line Input #3,s$
If s$=""Then
csc=csc And &b01
Close #3
Else
cou(s$):cen()
EndIf
EndIf
If Not(csc And &b10)Then Line Input s$:cx=1
If (r=1)And(csc And &b01)And(s$<>"")Then Print #2,s$
ci$=s$
End Function
Sub cou(s$)
cco=0
If Len(s$)=1 Then
If (s$=" ")Xor csp Then cfl():csp=(s$=" ")
cb$=cb$+s$
Else
Local c$,i
For i=1 To Len(s$)
c$=Mid$(s$,i,1)
If (c$=" ")Xor csp Then cfl():csp=(c$=" ")
cb$=cb$+c$
Next i
EndIf
End Sub
Sub cfl()
If csi Then Print Chr$(8);" ";Chr$(8);:csi=0
Do
If cx=1 And cli>50-2 Then
Print "[MORE] ";
Do While Inkey$<>"":Loop
Do While Inkey$="":Loop
Print
cli=0
EndIf
If cx+Len(cb$)>100 Then
Print
cli=cli+1
cx=1
If csp Then cb$="":Exit Sub
Else
Print cb$;
cx=cx+Len(cb$)
cb$=""
Exit Sub
EndIf
Loop
End Sub
Sub cen()
cfl()
If cco<0 Then
Exit Sub
ElseIf cco>=10 Then
Local i
For i=0 To 50-cco-1:Print :Next i
cco=-999
cli=0
Exit Sub
EndIf
Print
cco=cco+1
cli=cli+1
cx=1
End Sub
Sub cecho(f$)
Local s$
Open f$ For Input As #1
Do
Line Input #1,s$
cou(s$)
cen()
Loop While Not Eof(#1)
Close #1
End Sub
Dim al$(2)LENGTH 32
al$(0)=" 123[]abcdefghijklmnopqrstuvwxyz"
al$(1)=" 123[]ABCDEFGHIJKLMNOPQRSTUVWXYZ"
al$(2)=" 123[]@^0123456789.,!?_#'"+Chr$(34)+"/\-:()"
Sub pzs(a)
Local b,c,i,s,x,zc(2)
For x=0 To 0 Step 0
x=rw(a)
zc(0)=(x And &h7C00)\&h400
zc(1)=(x And &h3E0)\&h20
zc(2)=(x And &h1F)
x=x\&h8000
For i=0 To 2
c=zc(i)
If s<3 Then
If c=0 Then
cou(" ")
ElseIf c<4 Then
s=c+2
ElseIf c<6 Then
s=c-3
Else
If c=6 And s=2 Then
s=6
ElseIf c=7 And s=2 Then
cen()
s=0
Else
cou(Mid$(al$(s),c+1,1))
s=0
EndIf
EndIf
ElseIf s<6 Then
b=a
pab((s-3)*32+c)
a=b
s=0
ElseIf s=6 Then
s=c+7
Else
cou(Chr$((s-7)*32+c))
s=0
EndIf
Next i
a=a+2
Next x
End Sub
Sub pab(x)
Local a,b
a=rw(&h18)
b=rw(a+x*2)
pzs(b*2)
End Sub
Function oat(o,a,s,x)
Local ad,m,y
If o=0 Then Exit Function
ad=rw(&h0A)+62+(o-1)*9+a\8
y=rb(ad)
m=2^(7-a Mod 8)
If s=0 Then oat=(y And m)>0:Exit Function
If x=0 Then y=(y And(m Xor &hFF))Else y=(y Or m)
wb(ad,y)
oat=x
End Function
Function ob_rel(o,r,s,x)
Local ad
ad=rw(&h0A)+62+(o-1)*9+r
If s=0 Then ob_rel=rb(ad):Exit Function
wb(ad,x)
ob_rel=x
End Function
Function onp(o,p)
Local ad,x
If o=0 Then
Exit Function
ElseIf p=0 Then
ad=opb(o)
ad=ad+1+2*rb(ad)
Else
ad=opa(o,p)
If ad=0 Then Error "Property does not exist"
x=rb(ad-1)
ad=ad+1+x\32
EndIf
x=rb(ad)
onp=x And 31
End Function
Function opl(ad)
Local x
If ad=0 Then Exit Function
x=rb(ad-1)
opl=x\32+1
End Function
Function opb(o)
Local ad
ad=rw(&h0A)+62+(o-1)*9+7
opb=rw(ad)
End Function
Function opa(o,p)
Local ad,x
ad=opb(o)
ad=ad+1+2*rb(ad)
Do
x=rb(ad)
If (x And 31)=p Then opa=ad+1:Exit Function
If (x And 31)<p Then opa=0:Exit Function
ad=ad+2+x\32
Loop
End Function
Function opg(o,p)
Local ad,sz,x
ad=opa(o,p)
If ad>0 Then
x=rb(ad-1)
If (x And 31)<>p Then Error
sz=x\32+1
If sz=1 Then opg=rb(ad):Exit Function
If sz=2 Then opg=rw(ad):Exit Function
Error "Property length > 2"
EndIf
ad=rw(&h0A)+2*(p-1)
opg=rw(ad)
End Function
Sub ob_prop_set(o,p,x)
Local a,sz
a=opa(o,p)
If a=0 Then Error "Object "+Str$(o)+" does not have property "+Str$(p)
sz=opl(a)
If sz<0 Or sz>2 Then Error "Object "+Str$(o)+" has length "+Str$(sz)
If sz=1 Then wb(a,x And &hFF)
If sz=2 Then ww(a,x)
End Sub
Sub opr(o)
Local ad
ad=opb(o)+1
pzs(ad)
End Sub
Sub oin(o,d)
Local c,_
ore(o)
c=ob_rel(d,6)
_=ob_rel(d,6,1,o)
_=ob_rel(o,4,1,d)
_=ob_rel(o,5,1,c)
End Sub
Sub ore(o)
Local c,p,s,_
p=ob_rel(o,4)
s=ob_rel(o,5)
c=ob_rel(p,6)
_=ob_rel(o,4,1,0)
_=ob_rel(o,5,1,0)
If o=c Then
_=ob_rel(p,6,1,s)
Else
Do
If ob_rel(c,5)=o Then _=ob_rel(c,5,1,s):Exit
c=ob_rel(c,5)
Loop Until c=0
EndIf
End Sub
Function lp$(s$,i,c$)
Local a
a=Len(s$)
If c$=""Then c$=" "
If a<i Then lp$=String$(i-a,c$)+s$ Else lp$=s$
End Function
Function rd$(s$,i,c$)
Local a
a=Len(s$)
If c$=""Then c$=" "
If a<i Then rd$=s$+String$(i-a,c$)Else rd$=s$
End Function
Function hx$(x,i)
If i<1 Then i=4
hx$="&h"+lp$(Hex$(x),i,"0")
End Function
Dim dad
Dim ds$(1)Length 5
Dim del
Dim dsz
Dim dea
Sub di_init()
Local i,ns
dad=rw(&h08)
ns=rb(dad)
Poke Var ds$(0),0,ns
For i=1 To ns:Poke Var ds$(0),i,rb(dad+i):Next i
del=rb(dad+ns+1)
dsz=rw(dad+ns+2)
dea=dad+ns+4
End Sub
Function dlk(w$)
Local c,i,j,nz,sz,z(9)
sz=Len(w$):If sz>6 Then sz=6
i=1
Do While i<7 And nz<7
If i>sz Then
z(nz)=5:nz=nz+1
Else
c=Asc(Mid$(w$,i,1))
j=Instr(al$(0),Chr$(c))-1
If j>-1 Then
z(nz)=j:nz=nz+1
Else
j=Instr(al$(2),Chr$(c))-1
If j>-1 Then
z(nz)=5:nz=nz+1
z(nz)=j:nz=nz+1
Else
z(nz)=5:nz=nz+1
z(nz)=6:nz=nz+1
z(nz)=c\32:nz=nz+1
z(nz)=c And 31:nz=nz+1
EndIf
EndIf
EndIf
i=i+1
Loop
Local x(1)
x(0)=z(0)*1024+z(1)*32+z(2)
x(1)=z(3)*1024+z(4)*32+z(5)+32768
Local a,lb,ub,y(1)
lb=0