to jtag conversion ?

For an embedded JTAG programmer design, please search Altera.com for the JRUNNER project.

And avoid cross-postings at Altera Forum.

I want the cpld to do the conversion : cpld will recieve data by uart and convert it into jtag format (as i dont have a cpu in my board).

Ill make my question more accurate:

Is there a hw interface (i want the cpld do do the conversion - not a pc )

that can convert data to jtag format -?

thank you

the jrunner is no good for me because im interested in doing the conversion by hw - in the cpld (and not by a processor),

ill try to explain :

i have 2 boards, my goal is to program the cpld at board# 2 .

in board# 1: i have a processor which converts the programming file into uart and transmmits this data - by uart - to board# 2.

in board# 2 : i have a cpld (no processor) which recieves uart data from board# 1 , and wants to convert this data back into jtag format , in order to program itself (with real ISP option of course).

in case of active serial programming ( for example), i would of used the Active Serial Memory Interface (ALTASMI_PARALLEL) Megafunction , which provides access to programing the epcs device (parallel input to active serial output) . but in my case i want it to be a parallel input to jtag output .

Is there such a megafunction - ?

hoped i made myself clear.

thanks again

I fear, that you still didn't understand, that I suggested the SRUNNER project only as a reference how to generate the JTAG command sequence.

Your basic intention has been clear from your first post in my opinion. From the additional information, I understand that you want to send the binary configuration data directly by the UART. This implies, that the CPLD has to perform the translation to JTAG programming commands.

There's no JTAG master core available, but opencores has one.