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09/13/02 11:30
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 		 #29116 - Defining base address
Hi

I have a basic question on the connections. If I have to connect a 8255 or an LCD or an external EEPROM to a AT89c51,how do I allot the base address?

For eg :

1. 8255..
Mov dptr,#address of 8255(ports / control).
How do I define this address?.

2. LCD.

EN equ p3.1
data equ p1
setb en
mov data,a
clr en

Will I have to allot an address to EN initially?

3. EEPROM. Same as above.

List of 22 messages in thread
TopicAuthorDate
Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address..Thanks Eric            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address..Thanks Eric            01/01/70 00:00      
RE: Defining base address..Thanks Eric            01/01/70 00:00      
RE: Defining base address..Thanks Eric            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
8255 - great building block.            01/01/70 00:00      
RE: 8255 - great building block.            01/01/70 00:00      
RE: 8255 - great building block.            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: Defining base address            01/01/70 00:00      
RE: clarification (Philips reply above)            01/01/70 00:00      
RE: clarification (Philips reply above)            01/01/70 00:00      

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