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  return(res);
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  return(res);
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}
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}
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/* look up my parent: if it's rmod then return a ptr to its props struct,
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/* look up my parent: if it's rmod then return a ptr to its props struct,
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 * otherwise return NULL */
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 * otherwise return NULL
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 * since RMOD sets itself as the CTRL+BREAK handler, I look at the int23
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 * field of the PSP to locate it. Previously I was looking at PSP[Ch] (ie.
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 * "terminate address" but this was failing when using the LINK/LN TSR that
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 * intercepts DOS EXEC calls and sets itself as the parent of all launched
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 * applications */
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struct rmod_props far *rmod_find(unsigned short rmodcore_len) {
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struct rmod_props far *rmod_find(unsigned short rmodcore_len) {
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  unsigned short *parent = (void *)0x0C; /* parent's seg in PSP[Ch] ("prev. int22 handler") */
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  unsigned short *parent = (void *)0x10; /* look in PSP[10h] ("prev. int23 handler") */
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  unsigned short far *ptr;
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  unsigned short far *ptr;
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  const unsigned short sig[] = {0x1983, 0x1985, 0x2017, 0x2019};
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  const unsigned short sig[] = {0x1983, 0x1985, 0x2017, 0x2019};
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  unsigned char *cmdtail = (void *)0x80;
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  unsigned char *cmdtail = (void *)0x80;
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  unsigned char i;
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  unsigned char i;
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  /* is it rmod? */
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  /* is it rmod? */