**** BEGIN LOGGING AT Wed Jun 21 02:59:56 2006
Jun 21 14:55:09 <mattylad> Hi all. I came here from the openjtag wiki. Was wondering if there were any schematics for a FTDI 2232C based JTAG dongle?
Jun 21 14:55:36 <mattylad> (I've seen the block diagram in CVS)
Jun 21 14:55:37 <kay2> mattylad: on ftdi's webpage
Jun 21 14:55:53 <kay2> look at the jtag session
Jun 21 14:56:02 <kay2> but this shit can't bitbang anyways
Jun 21 14:56:07 <wookey_> guys - I  haven't been around for a while - what's the status of the JTAG dongle design, software etc?
Jun 21 14:56:09 <kay2> so not worth anything
Jun 21 14:56:22 <kay2> wookey_: not much
Jun 21 14:56:28 <wookey_> Balloon 3 is about to get first production run
Jun 21 14:56:37 <kay2> wookey_: AchiestDragon making he geeps hoping that it would be THE jtag tool
Jun 21 14:57:02 <wookey_> and we need some of what you've been doing - we are happy to combine forces if it makes sense/helps
Jun 21 14:57:17 <wookey_> e.g use your dongle design to save us doing one
Jun 21 14:57:33 <wookey_> The guy who knows about this stuff is Dave Bisset
Jun 21 14:58:25 <wookey_> Anyone interested should look at the JTAG section on http://balloonboard.org/docs/Developers_Meeting_20060606.pdf
Jun 21 14:58:38 <wookey_> to see where we are at.
Jun 21 14:59:07 <wookey_> Dave has done yet another JTAG programming tool called bflash
Jun 21 14:59:35 <wookey_> He said the open stuff he looked at didn't do multiple chains to his satisfaction so he did his own :-(
Jun 21 14:59:45 <wookey_> but now we need a free version of XJTAG
Jun 21 15:00:25 <wookey_> g2 was interested in this stuff - I see he's not around right now
Jun 21 15:02:24 <mattylad> kay2; I've seen the USB to JTAG interaface on ftdi's webpage. Is that the one you mean? 
Jun 21 15:15:03 <p2-mate> wookey_: it works for arm7 and some arm9s
Jun 21 15:15:12 <p2-mate> wookey_: xscale is being worked on
Jun 21 15:15:39 <wookey_> p2-mate: (hi) OK, cool. It needs software work or hardware work?
Jun 21 15:15:47 <p2-mate> wookey_: software work
Jun 21 15:16:02 <wookey_> Is anyone making devices or pcbs so we can just get one?
Jun 21 15:16:31 <p2-mate> wookey_: the FTDI 2232C eval board should do
Jun 21 15:21:52 * kay2 says that as long as no one is gonna use a simple ARM7 + FPGA for doing a bitbanging device, it's never gonna be fast enough
Jun 21 15:22:59 <p2-mate> you can't go beyond 12 (or was it 16) Mhz anyway
Jun 21 15:23:11 <kay2> p2-mate: on jtag ?
Jun 21 15:23:12 <p2-mate> and on some boards you can't reach that anyway
Jun 21 15:23:14 <p2-mate> kay2: yes
Jun 21 15:23:29 <kay2> With a MIPS i have no problem going over 70Mhz
Jun 21 15:23:33 <kay2> bitbanging
Jun 21 15:23:39 <kay2> what u talkin about
Jun 21 15:23:41 <kay2> EJTAG..
Jun 21 15:24:21 <p2-mate> the CPU can generate it, the JTAG controller on ARM can't cope with it
Jun 21 15:30:55 <kay2> on MIPS it works
Jun 21 15:30:59 <kay2> dunno about arm tho
Jun 21 15:54:53 <vmaster> imho you don't need >10 mhz
Jun 21 15:55:10 <vmaster> at ~1.5mhz i can download >100kb to a ARM7/9 target
Jun 21 15:56:00 <vmaster> well, probably only for boundary-scanning
Jun 21 15:56:55 <vmaster> because of the overly long scan chains
Jun 21 15:57:28 <vmaster> but XScale, ARM7/9, MIPS, all have shorter scan chains specifically for debugging and flashing
Jun 21 16:32:43 <p2-mate> is there a free EJTAG implementation BTW ?
Jun 21 16:35:38 <vmaster> mhh, not that I know of
Jun 21 17:26:29 <vmaster> wookey: regarding the FT2232: currently there's
Jun 21 17:26:44 <vmaster> only the eval board or the Amontec JTAGkey (~120 euros)
Jun 21 17:26:59 <vmaster> but olimex is about to release a similar device at ~60 euros
Jun 21 18:26:29 <prpplague> vmaster: oh yea?
Jun 21 18:26:39 <prpplague> vmaster: i was considering ordering hte jtag key
Jun 21 18:26:51 <prpplague> vmaster: even though i already have th ft2232 board
Jun 21 18:27:58 <vmaster> http://www.olimex.com/dev/arm-usb-ocd.html
Jun 21 18:28:19 <vmaster> sparkfun is going to stock them
Jun 21 18:30:40 <prpplague> vmaster: yea i saw sparkfun added openocd to the forum
Jun 21 18:31:16 <prpplague> vmaster: lovely
**** ENDING LOGGING AT Thu Jun 22 02:59:56 2006