How to do memory paging in uPSD3254BV-24U6?

[deng]

Posted on April 28, 2004 at 03:55

How to do memory paging in uPSD3254BV-24U6?

[joseph2399]

Posted on May 17, 2011 at 12:00

See the following post:

http://www.stmcu.com/forums-cat-1299-11.html

Regards,

uPSD Applications Engineering

[deng]

Posted on May 17, 2011 at 12:00

Hi All,

Can somebody please let me know how to do memory paging that is greater than 64K in uPSD3254BV? We are using Keil to do the fireware. Here is what we set in PSDsoft:

PGM SRACE:

----------

csboot0: 0000-1FFF

csboot1: 2000-3FFF

csboot2: 4000-5FFF

csboot3: 6000-7FFF

DATA SPACE:

-----------

CSIOP: 0000-00FF

rs0: 0100-7FFF

fs0: 8000-FFFF

fs1: 8000-FFFF

fs2: 8000-FFFF

fs3.. etc.

In Keil, specify:

Off-Chip Code Memory:

Eprom: Start: 0x0000, Size: 0x8000

Off-Chip XDATA Memory:

Ram: Start: 0x0100, Size: 0x7F00

We are using the same hex file for all the FS and CSB and have no problems until the hex file hits beyon 64K. Any idea what we did wrong and how to fix this problem?

Any other question is how do we access the 32 SRAMs?

Regards,

SD