Panasonic F77G, MN101C77C user manual ROM Correction

Models: F77G MN101C77C

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Chapter 2 CPU Basics

The ROM correction setup procedure is as follows.

(1)Set the head address of the program to be corrected to the ROM correction address setting register (RCnAPH/M/L).

(2)Set the correct program at RAM area.

(3)Set the head address of the correct program to RC vector table (RCnV(L), RCnV(H)).

(4)Set the RCnEN flag of ROM correction control register (RCCTR) to enable the ROM correction.

When the instruction of the corrected program head address is the half-byte instruction, the ROM correction checks the execution instruction of the half-byte. Therefore, set the address by a byte to the ROM correction address setting register.

When the instruction of the corrected program last address is the half-byte instruction, the recover address should be set by half byte.

ROM Correction

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Page 83
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Panasonic F77G, MN101C77C user manual ROM Correction