參數(shù)資料
型號: μPD784218
廠商: NEC Corp.
英文描述: 8 /16 Bit Single Chip Microcontrollers(8/16位單片微控制器)
中文描述: 8 / 16位單片機微控制器(8 / 16位單片微控制器)
文件頁數(shù): 56/70頁
文件大?。?/td> 271K
代理商: ΜPD784218
μ
PD784217,784218
56
13. ROM CORRECTION
ROM correction is a function to replace part of the program in the internal ROM with a program in the internal
RAM for execution.
By using this function, the instruction bug found in the internal ROM can be avoided, or the program flow can
be changed.
ROM correction can be used in up to four places in the internal ROM (program).
Figure 13-1. Block Diagram of ROM Correction
Program counter (PC)
Comparator
Correction address
pointer n
Correction address
register (CORAH, CORAL)
Internal bus
CORENn
CORCHm
Coincidence
Correction branch processing
request signal
(CALLT instruction)
ROM correction control register
(CORC)
Remark
n = 0 to 3, m = 0, 1
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