求大神指导，为什么16*16没法显示。急

正文摘要:

#include<reg51.h> #include<intrins.h> #define NUM 3 #define ROW_SEL P1 sbit SI =P2^1; sbit SCK =P2^0; sbit RCK =P1^6; sbit SCLR =P1^5; sbit G=P1^7; unsigned char code screen[4][32]={ ...