HD6475328-CP10 HITACHI [Hitachi Semiconductor], HD6475328-CP10 Datasheet - Page 99

• Manufacturer Part Number: HD6475328-CP10
• Description: original Hitachi CMOS microcomputer unit (MCU)
• Manufacturer: HITACHI [Hitachi Semiconductor]

• Solution
The problem can be avoided as follows:
A one-byte variable (char or unsigned char) is declared as a register variable.
The variable declared as in
Example: register char a;
In the example above, do not declare the variable (a) as a register variable.
Example: register char a;
When squaring one-byte data, do not use compound substitution. Code as follows:
Example: a * = a;
a * = a;
a * = a;
is squared by compound substitution
80
char a;
a * = a;
a = a * a;