From: pb@excelsior.xs4all.nl.REMOVE-THIS (Marc van den Dikkenberg)
Subject: PB REG / inline ASM problems
 
 
I've converted a fully functional set of IPX network routines
from QB to PB. I've tried two different ways of implementing it in PB, but
there is one major problem: either it works under win95, or it works under
DOS. Not both of them... Of course these days, that's not quite acceptable,
and I'm trying to figure out how to get this to work under BOTH operating
systems, like the original QuickBasic source does...
 
Is there anyone who knows what might be the problem?
Here's the SUB that causes the problems...
 
 
Original QB code (works fine under both DOS and Win95)
***
SUB SendPacket (CompleteCode%, InUseFlag%)
   InReg.BX = 3
   InReg.ES = VARSEG(ECBS)
   InReg.SI = VARPTR(ECBS)
   CALL InterruptX(&H7A, InReg, OutReg)
   CompleteCode = ASC(ECBS.CompCode)
   InUseFlag = ASC(ECBS.InUse)
END SUB
***
 
 
PB Code. Works find under DOS, crashes under Win95
***
SUB SendPacket (CompleteCode%, InUseFlag%)
   Reg 2, 3
   Reg 9, VARSEG(ECBS)
   Reg 5, VARPTR(ECBS)
   CALL INTERRUPT &H7A
   CompleteCode = ASC(ECBS.CompCode)
   InUseFlag = ASC(ECBS.InUse)
END SUB
***
 
 
Alternative PB Code. Works fine under Win95, locks up under DOS.
***
SUB SendPacket (CompleteCode%, InUseFlag%)
   print "I'm starting"
   plop%=varseg(ECBS)
   plip%=varptr(ECBS)
   ! MOV BX,3
   ! MOV ES,plop%
   ! MOV SI,plip%
   ! INT &H7A
   CompleteCode = ASC(ECBS.CompCode)
   InUseFlag = ASC(ECBS.InUse)
   print "I'm done"
END SUB
***
 
The weird thing, is that this sub is completed completely: the text "I'm
done" appears on the screen. However, the program locks up completely. The
very next line after calling the SendPacket SUB is "BEEP", and some print
statements. None of these happen... Trying to use WORDS instead of integers
(plop??) has exactly the same result. Works under Win95, locks up under
DOS.
 
As you understand, this is getting quite frustrating...
any ideas, anyone?
 
--
Marc van den Dikkenberg
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