Keil forum sfr P1 = 0x90; /* SFR for P1 */

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sfr P1 = 0x90; /* SFR for P1 */

Micro Club over 16 years ago

i was download the code from internet

the program is start with these lines
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sfr P1 = 0x90; /* SFR for P1 */

sbit P1_0 = P1^0; /* SFR for P1.0 */
sbit P1_1 = P1^1; /* SFR for P1.1 */

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what is the function of this code

0 Andy Neil over 16 years ago

The comments are pretty self-explanatory, aren't they?

sfr and sbit are Keil C51-specific extensions to the standard 'C' language - so look them up in the Keil C51 manual...
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0 Jon Ward over 16 years ago
Refer to the following:

http://www.keil.com/support/man/docs/c51/c51_le_sfr.htm

http://www.keil.com/support/man/docs/c51/c51_le_sbit.htm

Jon
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