[Coco] _os9 call from C still not Virqing

[Walter Zambotti]

Hi guys

trying to get this Virq counter in VRN working from C.

Looking at the asm code for tstfs2 I see this :

 DvcName fcc '/Nil'

 lda #UPDAT defined as 3 in OS9Defs
 leax DvcName,pc
 os9 I$Open

 lda <PathNmbr
 ldb #$80 get Virq total
 os9 I$GetSttt

So my code looks like this :

 int nilp = open("/Nil", 3);
 if (nilp == -1) printf("Can't open Nil\n");
 struct registers regs;
 regs.rg_a = nilp;
 regs_rg_b = 0x80;
 if (_os9(I_GETSTT, &regs) == -1) printf ("Can't stat Virq total %d\n",
regs.rg_b & 0xFF);

And my code is always failing at the _os9 call with error:

240: UNIT ERROR—The specified device unit does not exist.

Not sure if I'm doing this correctly!

Any ideas?

Walter