Question : Problem: Jtag

Hi,


    I want to program my flash memory by Jtag port. I have no basic JTAG, BSDL... Where shall I
get enough information to program My Flash using JTAG.  


Thanks in advance for any help!

Regards,
Deya.

Answer : Problem: Jtag

I have never seen JFlash utility and PAX255 (16 or 8 bit data bus?), but the problem may by same as programming flash with an hardware device programmer, as DATA-IO .

The real problem is the code that you are compiling.
- If you are compiling a file for a cpu at 16bit, you must compile using HEX-INTEL16 directive.
- If you are compiling with an HEX-INTEL8 directive, for a cpu at 16bit, you must "split" pair bites and odd bites in two files, next programm the devices in two step, using the two files.
- If you are compiling for a cpy at 8 bit with HEX-INTEL8 directive, and you use 2 prom to double the storage space, you must  search the end of first file-streem (i.e. using an ascii text editor) and use the first part for the first device, next use the second part setting an OFFSET on programmer.

For more info, include more details on your hardware, and include 10/15 lines of your hex-intel file.

Regards