星期四, 12月 28, 2006

PXA255 MSCx[2:0] setting?

I saw the MSC0_VAL in PXA255 initial code & tried to found how to calculate the best setting for PXA255 with Intel P30 Flash, Yamaha YGV628.
The RDFx, RDNx, RRRx registers are difficult to understand why the value of them came from.

For P30 Flash:
I found the Application Note 768 (Intel Strata Flash Memory(J3) to Intel PXA270 Applications Processor Design Guide). This document mentions the RDFx, RDNx, RRRx came from Intel PXA270 clock speed & flash read/write timing. So, that's it.

星期二, 12月 26, 2006

Which files to add to repository?

Which files to add to repository?

As programer, we need to know the purpose of every file in our project to have fully control.
This document is about the files of Visual C++ & embedded Visual C++ which need to be put into our version control.
the url link: http://www.jeffhung.net/blog/articles/jeffhung/348/.

星期四, 12月 21, 2006

The Intel P30 Flash with Windows CE 4.2 FMD driver

1. I found the jflashmm could write correctly with P30 Flash. So, to fully understand the code of jflashmm could help me to know how to modify the CE driver.

1-1. modify the dbpxa255.dat (the memory map part)
1-2. use the Flash_891c_2_32.dat (the P30 series flash have 4 x 32K Block + 255 x 128K block)

the CE side:
2-1. to know the inside of FMD driver(Intel Strata) comes with CE 4.2.
2-2. to modify the strata driver to fit the P30 spec, especially the mechanism of block lock & block arrangement.

星期四, 12月 14, 2006

Using USB KITL under Windows CE

Using USB KITL under Windows CE.

This is the on going project for me, to create an USB debug environment under Windows CE.NET or later. I will keep update the related info or my testing result.

RNDIS driver architecture differences between Windows CE 4.2 and 5.0. http://blogs.msdn.com/cenet/archive/2006/01/07/510512.aspx

Microsoft RNDIS sample use NetChip 2890
http://www.plxtech.com/products/net2000/net2890.asp

星期二, 12月 12, 2006

Install proxy server under Windows XP pro.

The link:
http://cha.homeip.net/blog/archives/2006/04/_winxp_cygwin_s.html

PS: The "acl" define of squid.conf need to be modified to fit the network filter.