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Decoder with multiple RAMs

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SilverKing

SilverKing

IS-IT--Management
Nov 13, 2015
1
LY
Hi everyone,

I've a problem I want some help with.
8086_memory2_4.gif


"For the previous figure, write a code to make the values of the third chip all zeros, and copy the contents of the first chip to sixth and the seventh."


I want you to help me with first steps to solve this problem.
 
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Can't help with the programming part, especially without knowing the system / CPU, but you have a 20-bit address with the top 4 bits always high and the remaining 0xF0000 thru 0xFFFFF divided evenly into 8 blocks.

Chip 1 would be 0xF0000 thru 0xF1FFF
Chip 2 would be 0xF2000 thru 0xF3FFF
...
Chip 7 would be 0xFE000 thru 0xFFFFF

 
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