Hi,
In one of my project i connected 8031, 27c256 and 8255.Here the A15 line is given common to Chip enable of EPROM and also connected to G1-pin of address decoder via a NAND gate.
So if the A15 is low eprom is selcted and if high 82c55 is selected.
But now i want to use 64kb eprom. I cannot connect the A15 like above.
Can anybody suggest how to do the accessing?
I am in need of how to access the 8031 with 27C512 (64KB EPROM)
The main problem is the chip select. Irrelevant
I am in need of how to access the 8031 with 6264(8KB RAM), and 82c55.
The main problem is the chip select. No, "The main problem is" you using the antique 8255, but if you persist wit5h this stupidity, use A15
Erik
my mail id is: shankar@triotech.com.sg
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