(Q)Basic -> C

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2 total messages Started by Francis Ho Thu, 06 Jun 1991 18:37

#1240

Author: Francis Ho
Date: Thu, 06 Jun 1991 18:37

26 lines
1219 bytes

what is the C equivalent (MSC 5.1 or TC/TC++) of these (Q)basic statements:

	 resumecom% = 11	 /* is this an int?  */
	 ctrladdress% = &H3FC    /* COM1 */
	 OUT ctrladress%, resumecom%

	 /* incidentally, why the '%', is this to signify ints ? */

is the TC/TC++ version of the above :

	 #define COM1 0

		[...]

	 bioscom(1, '\11', COM1);
		 or ^^^^^ (char)(11)
		 neither seems to work


please send replies to francis@cunixf.cc.columbia.edu

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Re: (Q)Basic -> C

#1243

Author: Steve Resnick
Date: Thu, 06 Jun 1991 22:39

39 lines
1745 bytes

In article <1991Jun6.183759.5605@cunixf.cc.columbia.edu> francis@cunixf.cc.columbia.edu (Francis Ho) writes:
>
>what is the C equivalent (MSC 5.1 or TC/TC++) of these (Q)basic statements:
>
>	 resumecom% = 11	 /* is this an int?  */
>	 ctrladdress% = &H3FC    /* COM1 */
>	 OUT ctrladress%, resumecom%
>
>	 /* incidentally, why the '%', is this to signify ints ? */
>
>is the TC/TC++ version of the above :
>
>	 #define COM1 0
>
>		[...]
>
>	 bioscom(1, '\11', COM1);
>		 or ^^^^^ (char)(11)
>		 neither seems to work
>
>
	What you want is:
		outportb(0x3fc,11);

	bioscom(1,(char)11,COM1) will write 11 to port 3F8 (which is the
	serial port transmitter) 0x3FC is the Modem control register which
	I don't think bioscom() can access.

Cheers!
Steve

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