參數(shù)資料
型號: M37160MA-XXXSP
元件分類: 微控制器/微處理器
英文描述: 8-BIT, MROM, 8.86 MHz, MICROCONTROLLER, PDIP42
封裝: 0.600 INCH, 1.78 MM PITCH, PLASTIC, SDIP-42
文件頁數(shù): 82/133頁
文件大?。?/td> 1003K
代理商: M37160MA-XXXSP
Rev.1.01
2003.11.13
page 50 of 130
M37160M8/MA/MF-XXXSP/FP,M37160EFSP/FP
Fig. 8.9.2 ROM Correction Enable Register
Fig. 8.9.1 ROM Correction Address Registers
8.9 ROM CORRECTION FUNCTION
This can correct program data in the ROM. Up to 2 addresses can be
corrected; a program for correction is stored in the ROM correction
vector in the RAM as the top address. There are 2 vectors for ROM
correction :
Vector 1 : address 030016
Vector 2 : address 032016
Set the address of the ROM data to be corrected into the ROM cor-
rection address register. When the value of the counter matches the
ROM data address in the top address of the ROM correction vector,
the main program branches to the correction program stored in the
ROM memory. To return from the correction program to the main
program, the op code and operand of the JMP instruction (total of 3
bytes) are necessary at the end of the correction program.
The ROM correction function is controlled by the ROM correction
enable register.
Notes 1: Specify the first address (op code address) of each
instruction as the ROM correction address.
2: Use the JMP instruction (total of 3 bytes) to return from
the correction program to the main program.
3: Do not set the same ROM correction address to both vectors 1
and 2.
020A16
ROM correction address 1 (high-order)
020B16
ROM correction address 1 (low-order)
020C16
ROM correction address 2 (high-order)
020D16
ROM correction address 2 (low-order)
b7 b6 b5 b4 b3 b2 b1 b0
ROM correction enable register (RCR) [Address 020E 16]
B
After reset
RW
ROM Correction Enable Register
0
Vector 1 enable bit (RC0)
Name
Functions
0: Disabled
1: Enabled
1
Vector 2 enable bit (RC1)
0: Disabled
1: Enabled
2
to
7
Nothing is assigned. These bits are write disable bits. When
these bits are read out, the values are “0.”
0
RW
R —
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