8位二进制数之前B和b之间的差异

Question

I am looking at some MPASM firmware code where 8-bit binary numbers are being loaded into status registers at the beginning of the program to set up the processor.

#define DEF_INTCON  B'10100000'
#define DEF_OPTION  B'10000111'       
#define GPIO_TRIS   B'11010000'      
#define DEF_GPIO    B'00000000'       
#define DEF_ANSEL   B'01111000'        
#define AN0_ADCON0  b'00000001'       ; CHS<2:0> 000 above settings for AN0
#define AN1_ADCON0  b'00000101'       ; CHS<2:0> 001 above settings for AN1
#define AN3_ADCON0  b'00001101'       ; CHS<2:0> 011 above settings for AN3
#define DEF_ADCON0  AN3_ADCON0  

What is the difference between the big B and the little b?

Answer 1

They're the same. The radix types aren't case sensitive.