• Arthur Becker (10/10) Feb 14 2007 I am trying to read the cpu tick counter using port 61h with this code:
• tjulian (2/13) Feb 15 2007
• Heinz Saathoff (7/13) Feb 16 2007 As tjulian already noted the functions are called _inp and _outp

Arthur Becker <artbeck hotmail.com> writes:

I am trying to read the cpu tick counter using port 61h with this code:
	out((in(0x61) & ~0x02) | 0x01, 0x61);
the compiler completes the command (dmc   sysinfo.c) without error but when
attempting to link it fails with the error:
 Error 42: Symbol Undefined _out
 Error 42: Symbol Undefined _in

I tried linking in about 5 of the different lib files in dm\lib but to no avail.
Please help as I can't figure out the running proc speed w/out a tick counter
of some kind.
Thanks.

tjulian <tjulian removethis.oldi.com> writes:

In DMC, the functions you want are _inp() and _outp().

Arthur Becker wrote:
 I am trying to read the cpu tick counter using port 61h with this code:
 	out((in(0x61) & ~0x02) | 0x01, 0x61);
 the compiler completes the command (dmc   sysinfo.c) without error but when
 attempting to link it fails with the error:
  Error 42: Symbol Undefined _out
  Error 42: Symbol Undefined _in
 
 I tried linking in about 5 of the different lib files in dm\lib but to no
avail.
 Please help as I can't figure out the running proc speed w/out a tick counter
 of some kind.
 Thanks.

Heinz Saathoff <newshsaat arcor.de> writes:

Hello,

Arthur Becker schrieb...
 I am trying to read the cpu tick counter using port 61h with this code:
 	out((in(0x61) & ~0x02) | 0x01, 0x61);
 the compiler completes the command (dmc   sysinfo.c) without error but when
 attempting to link it fails with the error:
  Error 42: Symbol Undefined _out
  Error 42: Symbol Undefined _in

As tjulian already noted the functions are called _inp and _outp 
(declared in header dos.h).  
Even if you use this calls you may not get what you want because you 
compiled your program as a Windows console application. 


- Heinz