🚀 go-pugleaf

In article <1992Sep29.123152.20212@inmet.camb.inmet.com> lipsett@nola.camb.inmet.com (Roger Lipsett) writes:
>
>I am in the process of modifying a critical error handler in various ways,
>mostly for my own edification and amusement.  This handler is actually a TSR
>that hooks INT24.  It appears to me that such a handler cannot be installed
>in the usual way (that is, using INT21 function 25), because when the
>program terminates staying resident, DOS restores the old values of the
>INT24 vector from the PSP.  Thus, the program must write the address of the
>new handler into its own PSP before terminating.  My problem is that I would
>like to be able to load the thing high using QEMM (for example), but would
>not like to be *forced* to do so.

A couple of ideas:
	1) Hook the timer interrupt, and wait a few seconds after going
	   resident.  Then install yourself into the interrupt table.
	   This gets around the "COMMAND.COM undoes all my efforts"
	   problem.
	2) Look into Ralf's AMISLIB system.  Although I've never used
	   it, it seems to me that it would allow you to auto load-hi, and 
	   thus perhaps get around this problem.  As far as I know,
	   though, the problem with AMISLIB is that it is assembler
	   based; I don't know if you can use it if, by chance, you are
	   coding in an HLL.

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