Hello Denis,
 BB> ...the stack is the same on return from Int 2E.
 DB> It's not the same on the return.
 DB> SS:SP are toasted after the INT 2E call.
 DB> (...did you know that OpenDOS...debug supports 386+ instructions?
     No, interesting :)
 DB> SS:SP is preserved with OpenDOS! :)
 DB> ...boot from DOS 6
 DB> BEFORE INT 2E CALL
 DB> SS = 1538 SP = FFFE
 DB> AFTER INT 2E CALL
 DB> SS = 0E38 SP = 0603
 DB> Which is why...SS:SP...needs to be saved.
 I reassembled with the 2 relevant lines rem'ed out.
 My OS is ms-dos 6.20 rev. A
 With or without 4DOS I can run List.com or Turbo Debugger and everything
 is fine. I see no change in the registers on the debugger screen so it
 is not a useful tool, however.
 I tried to use the debug.exe that came with dos 6.20, but the tsr won't
 respond when running it. I'll try the debug that comes with opendos next.
Kind regards, Barry
--- Terminate 4.00/Pro
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