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386b.bas
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Sub rep386(byval fv As Integer )
Dim As UByte temp = any
Dim As ULong c = Any
Dim As UByte temp2 = Any
Dim As UShort tempw = any,tempw2 = Any
Dim As Integer changeds=0
Dim As ULong oldds = Any
Dim As ULong templ = any,templ2 = Any
Dim As Integer tempz = Any
Dim As Integer tempi = Any
Dim As UShort of=flags
Dim As ULong ipc=oldpc
Dim As ULong rep32=op32
' GOTO
startrep:
temp=readmemb_386(cs0,pc):pc+=1
opcode2=temp
c=IIf((rep32 And &h200),ECX,CX)
Select Case As Const (temp Or rep32)
case &hC3, &h1C3, &h2C3, &h3C3
pc-=1
case &h08
pc=ipc+1
case &h26, &h126, &h226, &h326 /'ES:'/
oldds=ds0
ds0=es0
'rds=ES1
changeds=1
goto startrep
case &h2E, &h12E, &h22E, &h32E /'CS:'/
oldds=ds0
ds0=cs0
'rds=CS1
changeds=1
goto startrep
case &h36, &h136, &h236, &h336 /'SS:'/
oldds=ds0
ds0=ss0
'rds=SS1
changeds=1
goto startrep
case &h3E, &h13E, &h23E, &h33E /'DS:'/
oldds=ds0
ds0=ds0
changeds=1
goto startrep
case &h64, &h164, &h264, &h364 /'FS:'/
oldds=ds0
ds0=fs0
'rds=FS1
changeds=1
goto startrep
case &h65, &h165, &h265, &h365 /'GS:'/
oldds=ds0
ds0=gs0
'rds=GS1
changeds=1
goto startrep
case &h66, &h166, &h266, &h366 /'Data size prefix'/
rep32 = rep32 Xor &h100
goto startrep
case &h67, &h167, &h267, &h367 /'Address size prefix'/
rep32 = rep32 Xor &h200
goto startrep
case &h6C, &h16C /'REP INSB'/
if (c>0) Then
If checkio_perm(DX)=0 Then Exit Select ' error IO
temp2=inb(DX)
writememb_386(es0,DI,temp2):If abrt Then exit Select
if (flags And D_FLAG) Then
DI-=1
Else
DI+=1
EndIf
c-=1
cycles-=15
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: If ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h26C, &h36C /'REP INSB'/
if (c>0) Then
If checkio_perm(DX)=0 Then Exit Select ' error IO
temp2=inb(DX)
writememb_386(es0,EDI,temp2):if abrt Then exit Select
if (flags And D_FLAG) Then
EDI-=1
else
EDI+=1
EndIf
c-=1
cycles-=15
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: If ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h6D /'REP INSW'/
if (c>0) Then
tempw=inw(DX)
writememw_386(es0,DI,tempw)
if abrt Then exit Select
if (flags And D_FLAG) Then
DI-=2
else
DI+=2
EndIf
c-=1
cycles-=15
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: If ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h16D /'REP INSL'/
if (c>0) Then
templ=inl(DX)
writememl_386(es0,DI,templ)
if abrt Then exit Select
if (flags And D_FLAG) Then
DI-=4
else
DI+=4
EndIf
c-=1
cycles-=15
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: If ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h26D /'REP INSW'/
if (c>0) Then
tempw=inw(DX)
writememw_386(es0,EDI,tempw)
if abrt Then exit Select
if (flags And D_FLAG) Then
EDI-=2
else
EDI+=2
EndIf
c-=1
cycles-=15
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: If ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h36D /'REP INSL'/
if (c>0) Then
templ=inl(DX)
writememl_386(es0,EDI,templ)
if abrt Then exit Select
if (flags And D_FLAG) Then
EDI-=4
else
EDI+=4
EndIf
c-=1
cycles-=15
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: If ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h6E, &h16E /'REP OUTSB'/
if (c>0) Then
temp2=readmemb_386(ds0,SI):if abrt Then exit Select
If checkio_perm(DX)=0 Then Exit Select ' error IO
outb(DX,temp2)
if (flags And D_FLAG) Then
SI-=1
else
SI+=1
EndIf
c-=1
cycles-=14
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: If ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h26E, &h36E /'REP OUTSB'/
if (c>0) Then
temp2=readmemb_386(ds0,ESI):If abrt Then exit Select
If checkio_perm(DX)=0 Then Exit Select ' error IO
outb(DX,temp2)
if (flags And D_FLAG) Then
ESI-=1
else
ESI+=1
EndIf
c-=1
cycles-=14
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h6F /'REP OUTSW'/
if (c>0) Then
tempw=readmemw_386(ds0,SI)
if abrt Then exit Select
outw(DX,tempw)
if (flags And D_FLAG) Then
SI-=2
else
SI+=2
EndIf
c-=1
cycles-=14
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h16F /'REP OUTSL'/
if (c > 0) Then
templ = readmeml_386(ds0, SI)
if abrt Then exit Select
outl(DX, templ)
if (flags And D_FLAG) Then
SI -= 4
else
SI += 4
EndIf
c-=1
cycles -= 14
EndIf
if (c > 0) Then
firstrepcycle = 0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle = 1
EndIf
Exit Select
case &h26F /'REP OUTSW'/
if (c>0) Then
tempw=readmemw_386(ds0,ESI)
if abrt Then exit Select
outw(DX,tempw)
if (flags And D_FLAG) Then
ESI-=2
else
ESI+=2
EndIf
c-=1
cycles-=14
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h36F /'REP OUTSL'/
if (c > 0) Then
templ = readmeml_386(ds0, ESI)
if abrt Then exit Select
outl(DX, templ)
if (flags And D_FLAG) Then
ESI -= 4
else
ESI += 4
EndIf
c-=1
cycles -= 14
EndIf
if (c > 0) Then
firstrepcycle = 0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle = 1
EndIf
Exit Select
case &hA4, &h1A4 /'REP MOVSB'/
if (c>0) Then
temp2=readmemb_386(ds0,SI): if abrt then exit Select
writememb_386(es0,DI,temp2): if abrt then exit Select
if (flags And D_FLAG) Then
DI-=1: SI-=1
else
DI+=1: SI+=1
EndIf
c-=1
cycles-=3
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2A4, &h3A4 /'REP MOVSB'/
if (c>0) Then
temp2=readmemb_386(ds0,ESI): if abrt then exit Select
writememb_386(es0,EDI,temp2): if abrt then exit Select
if (flags And D_FLAG) Then
EDI-=1: ESI-=1
else
EDI+=1: ESI+=1
EndIf
c-=1
cycles-=3
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &hA5 /'REP MOVSW'/
if (c>0) Then
tempw=readmemw_386(ds0,SI): if abrt then exit Select
writememw_386(es0,DI,tempw): if abrt then exit Select
if (flags And D_FLAG) Then
DI-=2: SI-=2
else
DI+=2: SI+=2
EndIf
c-=1
cycles-=3
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h1A5 /'REP MOVSL'/
if (c>0) Then
templ=readmeml_386(ds0,SI): if abrt then exit Select
writememl_386(es0,DI,templ): if abrt then exit Select
if (flags And D_FLAG) Then
DI-=4: SI-=4
else
DI+=4: SI+=4
EndIf
c-=1
cycles-=3
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2A5 /'REP MOVSW'/
if (c>0) Then
tempw=readmemw_386(ds0,ESI): if abrt then exit Select
writememw_386(es0,EDI,tempw): if abrt then exit Select
if (flags And D_FLAG) Then
EDI-=2: ESI-=2
else
EDI+=2: ESI+=2
EndIf
c-=1
cycles-=3
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h3A5 /'REP MOVSL'/
if (c>0) Then
templ=readmeml_386(ds0,ESI): if abrt then exit Select
writememl_386(es0,EDI,templ): if abrt then exit Select
if (flags And D_FLAG) Then
EDI-=4: ESI-=4
else
EDI+=4: ESI+=4
EndIf
c-=1
cycles-=3
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &hA6, &h1A6 /'REP CMPSB'/
if (fv) Then
flags = flags Or Z_FLAG
Else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
temp=readmemb_386(ds0,SI)
temp2=readmemb_386(es0,DI)
if abrt Then
flags=of
Exit Select
EndIf
if (flags And D_FLAG) Then
DI-=1: SI-=1
else
DI+=1: SI+=1
EndIf
c-=1
cycles-=7
setsub8(temp,temp2)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
firstrepcycle=0: pc=ipc: If ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2A6, &h3A6 /'REP CMPSB'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
temp=readmemb_386(ds0,ESI)
temp2=readmemb_386(es0,EDI)
if abrt Then
flags=of
Exit Select
EndIf
if (flags And D_FLAG) Then
EDI-=1
ESI-=1
else
EDI+=1
ESI+=1
EndIf
c-=1
cycles-=7
setsub8(temp,temp2)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
firstrepcycle=0: pc=ipc : if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &hA7 /'REP CMPSW'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
tempw=readmemw_386(ds0,SI)
tempw2=readmemw_386(es0,DI)
if abrt Then
flags=of
Exit Select
EndIf
if (flags And D_FLAG) Then
DI-=2
SI-=2
else
DI+=2
SI+=2
EndIf
c-=1
cycles-=7
setsub16(tempw,tempw2)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc
firstrepcycle=0
if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h1A7 /'REP CMPSL'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
templ=readmeml_386(ds0,SI)
templ2=readmeml_386(es0,DI)
if abrt Then
flags=of
Exit Select
EndIf
if (flags And D_FLAG) Then
DI-=4
SI-=4
else
DI+=4
SI+=4
EndIf
c-=1
cycles-=7
setsub32(templ,templ2)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2A7 /'REP CMPSW'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
tempw=readmemw_386(ds0,ESI)
tempw2=readmemw_386(es0,EDI)
if abrt Then
flags=of
Exit select
EndIf
if (flags And D_FLAG) Then
EDI-=2: ESI-=2
else
EDI+=2: ESI+=2
EndIf
c-=1
cycles-=7
setsub16(tempw,tempw2)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h3A7 /'REP CMPSL'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
templ=readmeml_386(ds0,ESI)
templ2=readmeml_386(es0,EDI)
if abrt Then
flags=of
Exit Select
EndIf
if (flags And D_FLAG) Then
EDI-=4: ESI-=4
else
EDI+=4: ESI+=4
EndIf
c-=1
cycles-=7
setsub32(templ,templ2)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &hAA, &h1AA /'REP STOSB'/
if (c>0) Then
writememb_386(es0,DI,AL)
if abrt Then exit Select
if (flags And D_FLAG) Then
DI-=1
else
DI+=1
EndIf
c-=1
cycles-=4
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2AA, &h3AA /'REP STOSB'/
if (c>0) Then
writememb_386(es0,EDI,AL)
if abrt Then exit Select
if (flags And D_FLAG) Then
EDI-=1
else
EDI+=1
EndIf
c-=1
cycles-=4
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
Case &hAB /'REP STOSW'/
if (c>0) Then
writememw_386(es0,DI,AX)
if abrt Then exit Select
if (flags And D_FLAG) Then
DI-=2
else
DI+=2
EndIf
c-=1
cycles-=4
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2AB /'REP STOSW'/
if (c>0) Then
writememw_386(es0,EDI,AX)
if abrt Then exit Select
if (flags And D_FLAG) Then
EDI-=2
else
EDI+=2
EndIf
c-=1
cycles-=4
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h1AB /'REP STOSL'/
if (c>0) Then
writememl_386(es0,DI,EAX)
if abrt Then exit Select
if (flags And D_FLAG) Then
DI-=4
else
DI+=4
EndIf
c-=1
cycles-=4
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h3AB /'REP STOSL'/
if (c>0) Then
writememl_386(es0,EDI,EAX)
if abrt Then exit Select
if (flags And D_FLAG) Then
EDI-=4
else
EDI+=4
EndIf
c-=1
cycles-=4
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &hAC, &h1AC /'REP LODSB'/
if (c>0) Then
AL=readmemb_386(ds0,SI)
if abrt Then exit Select
if (flags And D_FLAG) Then
SI-=1
else
SI+=1
EndIf
c-=1
cycles-=5
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2AC, &h3AC /'REP LODSB'/
if (c>0) Then
AL=readmemb_386(ds0,ESI)
if abrt Then exit Select
if (flags And D_FLAG) Then
ESI-=1
else
ESI+=1
EndIf
c-=1
cycles-=5
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &hAD /'REP LODSW'/
if (c>0) Then
AX=readmemw_386(ds0,SI)
if abrt Then exit Select
if (flags And D_FLAG) Then
SI-=2
else
SI+=2
EndIf
c-=1
cycles-=5
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h1AD /'REP LODSL'/
if (c>0) Then
EAX=readmeml_386(ds0,SI)
if abrt Then exit Select
if (flags And D_FLAG) Then
SI-=4
else
SI+=4
EndIf
c-=1
cycles-=5
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2AD /'REP LODSW'/
if (c>0) Then
AX=readmemw_386(ds0,ESI)
if abrt Then exit Select
if (flags And D_FLAG) Then
ESI-=2
else
ESI+=2
EndIf
c-=1
cycles-=5
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h3AD /'REP LODSL'/
if (c>0) Then
EAX=readmeml_386(ds0,ESI)
if abrt Then exit Select
if (flags And D_FLAG) Then
ESI-=4
else
ESI+=4
EndIf
c-=1
cycles-=5
EndIf
if (c>0) Then
firstrepcycle=0: pc=ipc: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &hAE, &h1AE /'REP SCASB'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
temp2=readmemb_386(es0,DI)
if abrt Then
flags=of
Exit Select
EndIf
setsub8(AL,temp2)
if (flags And D_FLAG) Then
DI-=1
else
DI+=1
EndIf
c-=1
cycles-=5
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2AE, &h3AE /'REP SCASB'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
temp2=readmemb_386(es0,EDI)
if abrt Then
flags=of
Exit select
EndIf
setsub8(AL,temp2)
if (flags And D_FLAG) Then
EDI-=1
else
EDI+=1
EndIf
c-=1
cycles-=5
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &hAF /'REP SCASW'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
tempw=readmemw_386(es0,DI)
if abrt Then
flags=of
Exit select
EndIf
setsub16(AX,tempw)
if (flags And D_FLAG) Then
DI-=2
else
DI+=2
EndIf
c-=1
cycles-=5
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h1AF /'REP SCASL'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
templ=readmeml_386(es0,DI)
if abrt Then
flags=of
Exit select
EndIf
setsub32(EAX,templ)
if (flags And D_FLAG) Then
DI-=4
else
DI+=4
EndIf
c-=1
cycles-=5
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h2AF /'REP SCASW'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
tempw=readmemw_386(es0,EDI)
if abrt Then
flags=of
Exit select
EndIf
setsub16(AX,tempw)
if (flags And D_FLAG) Then
EDI-=2
else
EDI+=2
EndIf
c-=1
cycles-=5
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
case &h3AF /'REP SCASL'/
if (fv) Then
flags = flags Or Z_FLAG
else
flags = flags And inv(Z_FLAG)
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
templ=readmeml_386(es0,EDI)
if abrt Then
flags=of
Exit select
EndIf
setsub32(EAX,templ)
if (flags And D_FLAG) Then
EDI-=4
else
EDI+=4
EndIf
c-=1
cycles-=5
EndIf
if (c>0) And (fv=iif((flags And Z_FLAG),1,0)) Then
pc=ipc: firstrepcycle=0: if ssegs Then ssegs+=1
else
firstrepcycle=1
EndIf
Exit Select
Case else
pc=ipc
cycles-=20
x86illegal()
'if deb=3 Then Print #5,"Bad REP ",temp,rep32 Shr 8
End Select
if (rep32 And &h200) Then
ECX=c
Else
CX=c
EndIf
if (changeds) Then ds0=oldds
End Sub
#Include "386c.bas"