Các Vấn Đề Về MPLAB C18

**lybao_huy** · 27-03-2010, 09:48 AM

Tôi cũng đã xem nhiều lần rùi nhưng không hiểu lắm. Bạn có thể nói rõ hơn về Extended Mode,tôi thấy trong datasheet 18f4550 có viết:
Note:
Enabling the PIC18 instruction set extension may cause legacy applications to behave erratically or fail entirely.

và

When porting an application to the PIC18F2455/2550/
4455/4550, it is very important to consider the type of
code. A large, re-entrant application that is written in ‘C’
and would benefit from efficient compilation will do well
when using the instruction set extensions. Legacy
applications that heavily use the Access Bank will most
likely not benefit from using the extended instruction
set.

xin bạn giải thích dùm hộ.

27-03-2010, 09:48 AM	#3
lybao_huy Đệ tử 5 túi Tham gia ngày: Jan 2008 Bài gửi: 97 :	Tôi cũng đã xem nhiều lần rùi nhưng không hiểu lắm. Bạn có thể nói rõ hơn về Extended Mode,tôi thấy trong datasheet 18f4550 có viết: Note: Enabling the PIC18 instruction set extension may cause legacy applications to behave erratically or fail entirely. và When porting an application to the PIC18F2455/2550/ 4455/4550, it is very important to consider the type of code. A large, re-entrant application that is written in ‘C’ and would benefit from efficient compilation will do well when using the instruction set extensions. Legacy applications that heavily use the Access Bank will most likely not benefit from using the extended instruction set. xin bạn giải thích dùm hộ.