Extra addr. lines needed

From: John Tan (bktan1974_at_netscape.net)
Date: 12/29/03 

Date: 28 Dec 2003 23:09:34 -0800

Hi,
I'm using an 8052 that has 12 addr lines ~ 4KB of addressable space.
But i need to access additional 512KB of ROM ~ 19 address lines
required!

How do i extend the addr. to 19 lines.

Can i do this:

1) get firmware engineer to extend it using GPIO pins ? Is this a good
method ?
2) some kind of paging access ? how exactly, i not too sure in terms
of HW wiring ?

Thanks.

Relevant Pages

  • Re: Extra addr. lines needed
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  • Re: Extra addr. lines needed
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  • Extra addr. lines needed
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