JS>  If 4DOS24H2 seems to load a new copy of itself into memory every
JS>  time you make a shell (and thereby wasting useful memory) you
JS>  may have loaded a resident program (TSR) which interferes with
JS>  4DOS24H2.  [...]  The trouble might be that for some purpose your
JS>  TSR uses interrupt 61h.  4DOS24H2 itself uses interrupt vector
JS>  61h to see if it is already installed and can not identify
JS>  itself in memory if this interrupt is hooked by some TSR after
JS>  installation of 4DOS24H2.
Ah, 4DOS is also in the wrong...  it should use a function in int 2f... int 
0
- 7f (skiping the obvious) should be used only if they are detected blank... 
PKT drivers and network drivers have always used 60-61 in this fashion...  
Other programs should not use those int's without checking them to see if 
they're blank.
If a program wants to detect if its already installed, it should use int 15 
r
int 2F for this...
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