At 14:18 13/06/2007, you wrote:
I do not need it actually, but i am so inquisitive.
I have heard that sqlite has been ported to AVR too.
How may be solved the main storage solved on it?
So for example, i have system with ATmega64 with 128KB of external SRAM.
The whole ram is organized as static 60KB and 18 pages of 4KB (the last 4KB
page lays in the internal RAM shadow), but it can be simlply reconfigured
because the memory address logic is provided by programmable logic device
(CPLD)
As the firm data storage memory is there 1MB spi dataflash, but there is a
possibility to replace it with 16MB chip with the same interface for an
example.
I am at 230th page of Mike Owen's book The definitive Guide to
SQLite and with
every next page, my image of SQL on a chip w/o OS disappears in haze.
Is i wrote before, i do not need it actually, i use sqlite in linux
environment.
Thank you for let you make me a picture.
Jakub Ladman
128KB RAM is very low. I have run it on powerpc 440 device with
uclinux but with more ram (1GB). There is minimalist os that can be
fit on a few KB, check contiki and contiki mail-list
http://www.sics.se/contiki/
https://lists.sourceforge.net/lists/listinfo/contiki-developers it's
used on commodore 64 and other relics. I used it before in a
development card (Virtex II Pro - xupv2p). You can cut down contiki
and sqlite features. The problem will be the stack/heap that sqlite
needs for run. I don't know about ATmega64 but can't you add a fpga
with dram controller? Perhaps using a free i/o port or changing the
cpld with the fpga?
HTH
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