[Freedos-kernel] Re: [Freedos-cvs] freecom/lib cd_dir.c,1.4,1.5 critrchk.c,1.1,1.2 err61.c,1.4,1.5 mk_rddir.c,1.2,1.3 optsb.c,1.3,1.4 where.c,1.5,1.6

[Arkady V.Belousov]

Hi!

I wrote:

 +++ mk_rddir.c10 Dec 2005 10:09:43 -  1.3
 +int lfn_mrc_dir(const char *path, int mode)
 +{
 + struct REGPACK r;
 + int mrc_f[6] = { 0x713A, 0x7139, 0x713B, 0x3A, 0x39, 0x3B };
------

 BTW, bug! Function number should come in AH, not AL! So:

 + r.r_ax = mrc_f[mode + (checkDriveSupportsLFN(getdisk() + 'A') ? 0 : 
 3)];
 if (checkDriveSupportsLFN(getdisk() + 'A'))
   mode += 0x7100;
 r.r_ax = mode;

 Possible solution with my edition:

if (...)
  mode += 0x7100;
else
  mode = 8; /* shift low byte to high byte */
r.r_ax = mode;

 Or:

if (...)
  mode = (mode  8) + 0x7100;
r.r_ax = mode;
[...]
#define chdir(x) lfn_mrc_dir(x,0x3B00)
--^^





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Re: [Freedos-kernel] Re: [Freedos-cvs] freecom/lib cd_dir.c,1.4,1.5 critrchk.c,1.1,1.2 err61.c,1.4,1.5 mk_rddir.c,1.2,1.3 optsb.c,1.3,1.4 where.c,1.5,1.6

[Kenneth J. Davis]

Arkady V.Belousov wrote:
...

 BTW, bug! Function number should come in AH, not AL! So:

...

I will try to fix in the morning, thanks.

Jeremy




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