Reply by Mostafa Kassem●September 5, 20042004-09-05
Unbeliever wrote:
> "Lee" <yxl4444@louisiana.edu> wrote in message
> news:5c3c88bc.0409021939.876f829@posting.google.com...
>
>>Dear all,
>>
>>If I did the PCB by myself and put all components onto the board by
>>myself, how can I burn bootloader into Flash?JTAG hardware is enough?
>>
>>Thanks,
>
> No, the RCA1802 does not have JTAG interface....
> .... or perhaps you were using a different processor?
>
> Cheers,
> Alf
>
>
Are you sure it doesn't (didn't)?
If you pulse each of the EFn lines low in sequence at the rhythm of a close
encounter of the third kind and then wait until the Q lines goes high/low
and if you pulse the TPA line high when the TPB is high that will put the
RCA1802 in the JTAG download mode. :-D
I swear this scheme was published on RCA's web site ;-)
Mostafa
--
----------------------------------------
Mostafa Kassem
M Dot Kassem At ieee Dot org
---------------------------------------
Reply by Gerald Bonnstetter●September 4, 20042004-09-04
Unbeliever wrote:
> "Lee" <yxl4444@louisiana.edu> wrote in message
> news:5c3c88bc.0409021939.876f829@posting.google.com...
>
>>Dear all,
>>
>>If I did the PCB by myself and put all components onto the board by
>>myself, how can I burn bootloader into Flash?JTAG hardware is enough?
>>
>>Thanks,
>
> No, the RCA1802 does not have JTAG interface....
Yes, but if you hold /CLEAR and /WAIT both low you can use DMA to load
memory starting at 0000h with a program without using a bootloader. ;-)
> .... or perhaps you were using a different processor?
>
> Cheers,
> Alf
>
Reply by Ulf Samuelsson●September 3, 20042004-09-03
Depends on which chip you are using.
The AT91 ARM7s need a JTAG interface
unless you have a combo chip with internal flash.
They get delivered with preprogrammed flash.
The AT91RM9200 has a cool bootrom which will
check if the flash is programmed and if so, boot from the flash
otherwise it will establish an X-Modem communication on the debug UART
or Device Firmware Upgrade via USB.
Both method will only require a standard PC and a standard serial cable.
No JTAG ICE needed.
--
Best Regards
Ulf at atmel dot com
These comments are intended to be my own opinion and they
may, or may not be shared by my employer, Atmel Sweden.
"Lee" <yxl4444@louisiana.edu> skrev i meddelandet
news:5c3c88bc.0409021939.876f829@posting.google.com...
> Dear all,
>
> If I did the PCB by myself and put all components onto the board by
> myself, how can I burn bootloader into Flash?JTAG hardware is enough?
>
> Thanks,
Reply by Rene Tschaggelar●September 3, 20042004-09-03
Lee wrote:
> Dear all,
>
> If I did the PCB by myself and put all components onto the board by
> myself, how can I burn bootloader into Flash?JTAG hardware is enough?
Possibly.
Have a look at the manual of the controller in question.
It may or may not have JTAG enabled at power up.
Rene
--
Ing.Buero R.Tschaggelar - http://www.ibrtses.com
& commercial newsgroups - http://www.talkto.net
Reply by Unbeliever●September 3, 20042004-09-03
"Lee" <yxl4444@louisiana.edu> wrote in message
news:5c3c88bc.0409021939.876f829@posting.google.com...
> Dear all,
>
> If I did the PCB by myself and put all components onto the board by
> myself, how can I burn bootloader into Flash?JTAG hardware is enough?
>
> Thanks,
No, the RCA1802 does not have JTAG interface....
.... or perhaps you were using a different processor?
Cheers,
Alf
Reply by Rune Christensen●September 3, 20042004-09-03
"Lee" <yxl4444@louisiana.edu> skrev i en meddelelse
news:5c3c88bc.0409021939.876f829@posting.google.com...
> Dear all,
>
> If I did the PCB by myself and put all components onto the board by
> myself, how can I burn bootloader into Flash?JTAG hardware is enough?
>
> Thanks,
Please give us some more information about the Flash and the PCB. Are there
any homepage with the PCB and/or the design?
Cheers
Rune Christensen
---
Outgoing mail is certified Virus Free.
Checked by AVG anti-virus system (http://www.grisoft.com).
Version: 6.0.746 / Virus Database: 498 - Release Date: 31-08-2004
Reply by Lee●September 3, 20042004-09-03
Dear all,
If I did the PCB by myself and put all components onto the board by
myself, how can I burn bootloader into Flash?JTAG hardware is enough?
Thanks,