Hi Barry,
BB> DB>>     push    CS
BB> DB>>     pop     DS
 It would be the above, which I didn't really notice before. After the INT 2E
call, SS:SP would be trashed. So when we PUSH CS, we would be pushing it to 
n
unknown memory area. The PUSH/POP itself is fine, but it's where the
pusing/poping is happening that's the problem.
 We might be pushing our CS into some other program's code/data, possible
screwing it up.
BB> DB>>     mov     SS,[_SS]    ;restore them back again
BB> DB>>     mov     SP,[_SP]
BB> DB>>     ...
BB> FS> Are you sure this is safe? You are using the stack here. Not good 
en
BB> FS> There's nothing wrong with:
BB> FS>          mov       ss,cs:[_ss]
BB> FS>          mov       sp,cs:[_sp]
 Try that and see what happens.
BB>      I don't see the problem. push,then pop. Stack is not altered, right?
BB>      However, I tried the tsr with Denis's change and it still crashes :)
 Oh well, worked in BACKUP :) perhaps it needs a total re-work, and the most
try saving EVERYTHING! :) registers, stack, etc.
 Cheers,
  Denis Boyles
 * OLX 2.1 TD * Unable to locate Coffee -- Operator Halted!
--- Maximus/2 3.01
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