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| 10:57.04 | ep1220 | [g2] I have a question on the NSLU2 |
| 10:57.57 | [g2] | ep1220, I'm all ears |
| 10:58.21 | ep1220 | I now have one here, opened. |
| 10:58.41 | ep1220 | For the cache Dld I need to control the Reset of the Xscale |
| 10:58.58 | ep1220 | In the Wiki I saw the rest button is connected to a GPIO? |
| 10:59.10 | ep1220 | DO You know more details on this ? |
| 11:00.32 | dyoung-zzzz | what sort of info are you looking for? |
| 11:01.10 | [g2] | ep1220, do you know which Reset pin on the chip ? I mean the actual letter/number pair from the BGA pin out ? |
| 11:01.30 | dyoung-zzzz | [g2] we should probably point him to the pictures of the bare board. |
| 11:02.19 | [g2] | dyoung-zzzz, nod. I was also going to let him know we've got the bare board and Allan can do traces |
| 11:02.29 | dyoung-zzzz | http://www.nslu2-linux.org/wiki/Info/PhotosOfTheInternals |
| 11:02.59 | dyoung-zzzz | The ones labelled "bare" are the board with no components. |
| 11:03.18 | *** join/#openjtag prpplague (~billybob@216.110.117.146) |
| 11:03.48 | ep1220 | I will look at the pics. And the datasheet for the Reset Ball number |
| 11:04.20 | dyoung-zzzz | we shoudl ask allan to slap the thing on a scanner. |
| 11:04.41 | dyoung-zzzz | assuming its flat enough.... |
| 11:08.16 | ep1220 | scanning would be very good |
| 11:08.52 | dyoung-zzzz | I dont seem to have the full ds handy atm. |
| 11:10.07 | [g2] | I was thinking of getting a board x-ray'ed |
| 11:10.35 | ep1220 | I need the RESET_IN_N: AC13 |
| 11:12.47 | [g2] | Trevor's got a singleton |
| 11:13.12 | [g2] | google "RESET_IN_N nslu2" and you get only his page |
| 11:13.16 | [g2] | Tiersten_ |
| 11:14.41 | [g2] | actaully you don't even need the nslu2 to get that page :) |
| 11:15.48 | dyoung-zzzz | it might be impratical to trace it out using pictures only. |
| 11:16.14 | [g2] | yes we should just send a message to Allan |
| 11:16.37 | [g2] | He's been in #nslu2-linux the past couple days |
| 11:16.50 | [g2] | I'll send him an e-mail now |
| 11:17.07 | dyoung-zzzz | ep1220, so the idea is to hold the xscale device in reset while you load things into the cache? |
| 11:17.13 | ep1220 | [g2]: Thanks. |
| 11:17.38 | ep1220 | dyoung-zzzz: Yes. Must be done this way. |
| 11:17.49 | ep1220 | else the CPU might interfere. |
| 11:17.59 | dyoung-zzzz | Cool. |
| 11:18.18 | dyoung-zzzz | For some reason I thought holding the CPU in Reset would interfere with JTAG operations. |
| 11:18.32 | ep1220 | yes it does. let me explain. |
| 11:18.32 | dyoung-zzzz | But I'm pretty much a complete amateur. |
| 11:18.48 | ep1220 | 1) assert RESET_IN. |
| 11:19.08 | ep1220 | 2) write to a special JTAG register and set a "keep-reset" bit |
| 11:19.21 | ep1220 | 3) release RESET_IN |
| 11:19.41 | ep1220 | 4) now the CPU core is kept in reset, but other parts work |
| 11:20.06 | dyoung-zzzz | I see. |
| 11:20.21 | [g2] | 5) make changes |
| 11:20.28 | [g2] | 6) release "keep-reset" |
| 11:20.39 | [g2] | ? |
| 11:20.48 | ep1220 | [g2]: I see You are ready to help here :-) |
| 11:21.03 | [g2] | I'm guessing there ? |
| 11:21.18 | ep1220 | is just as You said. |
| 11:21.26 | [g2] | I'd assume that this is the same or similar feature that JTAG debugging uses |
| 11:21.38 | dyoung-zzzz | this benefits us because we can twiddle cache bits faster than we can twiddle Flash bits? |
| 11:22.09 | ep1220 | the good is: You can add code wihout modifing flash or RAM |
| 11:22.15 | [g2] | I'd think virtually immediately |
| 11:22.17 | dyoung-zzzz | Okay can someone remind me what TRST is? |
| 11:22.31 | ep1220 | TRST is used to reset the JTAG engine |
| 11:22.42 | ep1220 | Does not affect CPU |
| 11:22.54 | dyoung-zzzz | Got it. |
| 11:23.28 | dyoung-zzzz | so actually, the twiddling of the CPU RESET_IN_N is not directly related to a JTAG Function. |
| 11:23.47 | dyoung-zzzz | so we'd need an additional I/O pin to twiddle it. |
| 11:24.02 | ep1220 | dyoung-zzzz: yes |
| 11:24.05 | dyoung-zzzz | (I'm trying to understand the whole picture, sorry to be quizzing you) |
| 11:24.15 | ep1220 | dyoung-zzzz: np |
| 11:24.27 | dyoung-zzzz | as I said I'm pretty much a complete amateur. |
| 11:24.30 | dyoung-zzzz | :-) |
| 11:27.39 | [g2] | ep1220, is the keep-reset documented somewhere ? Like and Intel app note ? |
| 11:27.48 | [g2] | Like an Intel ... |
| 11:29.24 | dyoung-zzzz | how does one twiddle the cache? During the CPU being "keep-reset-ed" is the BSR no longer huge? Or am I just confused? |
| 11:30.40 | [g2] | I'd guess the BSR doesn't change |
| 11:31.13 | [g2] | We're not changing the TAP controller... just hold the logic in the CPU from getting clocked |
| 11:31.20 | [g2] | holding |
| 11:31.31 | dyoung-zzzz | Right.... |
| 11:31.46 | dyoung-zzzz | so twiddling the cache is still a 498b operation? |
| 11:31.50 | [g2] | But I'm a *TOTAL AMATEUR* and just guessing |
| 11:31.58 | ep1220 | g2: it is in the Xscale core manual/debugging section |
| 11:32.12 | [g2] | ep1220, cool THX! |
| 11:32.18 | ep1220 | Twiddling the chace is a 33bit/Word operation |
| 11:32.34 | ep1220 | You do not go thru the JTAG scan chain. |
| 11:32.48 | prpplague | dyoung-zzzz: lots of times if your flash is blank and the processor starts up and reads a code of 0xffffffff which is an invalid arm code, the system will lock up |
| 11:32.58 | ep1220 | You select special registers by using "private" JTAG instructions |
| 11:33.13 | prpplague | dyoung-zzzz: to prevent this you just hold the reset while running jtag |
| 11:33.37 | dyoung-zzzz | Aha, I see! I didnt read enough of TFM yet! |
| 11:34.37 | dyoung-zzzz | It all makes sense now. |
| 11:35.10 | dyoung-zzzz | I think thats what Teirsten was suggesting a while back, but I didnt know what he was saying. |
| 11:36.31 | [g2] | ep1220, So writing to the cache lines is a much shorter operation AND you probably get an immediate response as opposed to waiting for the Flash to program correct ? |
| 11:36.50 | ep1220 | g2: yes |
| 11:37.14 | [g2] | or we may be able to stream writes back-to-back to the cache |
| 11:37.42 | ep1220 | g2: You write Adress + 8 data words (1 cache line) |
| 11:38.08 | ep1220 | as fast as te JTAG PC IF can do. Back -to-back. |
| 11:38.14 | dyoung-zzzz | ep1220 do you have a good link/manual for JTAG? these private instructions sound interesting. |
| 11:38.14 | [g2] | heh... That sounds logical :) Just like a cache line fill |
| 11:39.31 | [g2] | Right the onboard cache can run at 266Mhz |
| 11:39.31 | ep1220 | dyoung-zzzz: the private instructions depend on the CPU |
| 11:39.31 | ep1220 | Xscale different than ARM than MIPS |
| 11:41.01 | ep1220 | Usually You find them in the manuals |
| 11:41.01 | [g2] | that's part of the reason the JTAG debugger cost money |
| 11:41.01 | dyoung-zzzz | I see it. LDIC, etc.... |
| 11:41.01 | ep1220 | dyoung-zzzz: exactly |
| 11:41.01 | [g2] | dyoung-zzzz, what's the pub number for that (I've got so many doc's around :) |
| 11:41.04 | dyoung-zzzz | 25248005.pdf |
| 11:41.09 | [g2] | THX |
| 11:41.15 | dyoung-zzzz | its the developer guide/manual |
| 11:44.25 | dyoung-zzzz | HIGH_Z sounds like it might be of interest when progrogramming a "personality prom" In Circuit. |
| 11:46.14 | ep1220 | dyoung-zzzz: afaik, HIGH-Z disables all drivers; |
| 11:46.16 | ep1220 | Normally used in connection testing |
| 11:46.24 | ep1220 | is a standard JTAG cmd. |
| 11:46.49 | dyoung-zzzz | This method sounds totoally doable. |
| 11:47.00 | [g2] | ep1220, so HIGH_Z is used for Checking for shorts ? |
| 11:47.22 | dyoung-zzzz | unless I'm hallucinating theres a via from the reset pin AC13 |
| 11:47.42 | ep1220 | g2: asume You have FLASH/RAM/CPU all on the databus |
| 11:48.15 | ep1220 | You HiGHZ the CPU: no check FLASH-RAM (if both are in the JTAG chain) |
| 11:48.53 | ep1220 | Or You have an additional bed-of-nails tester, or ... |
| 11:49.28 | [g2] | ep1220, I'm hoping to build some IXP4xx hw in the next couple months |
| 11:49.50 | [g2] | I'm know a little about all these things, but I'm going to need to know more |
| 11:50.06 | [g2] | and where I can cut cost and save $$ |
| 11:50.14 | dyoung-zzzz | I dont know anything about anything. |
| 11:50.23 | [g2] | but still keep quality HIGH_Z |
| 11:50.28 | [g2] | :) |
| 11:50.28 | prpplague | ep1220: there is a really good book i got from amazon about using jtag for hardware testing, its proved very useful |
| 11:50.44 | dyoung-zzzz | prpplague, Got a link? |
| 11:50.54 | [g2] | no he's teasing us :) |
| 11:50.56 | prpplague | dyoung-zzzz: grabing it now |
| 11:51.14 | dyoung-zzzz | someone recently gave me a amazon GC, and I might as well spend it on something good instead of Yet Another Toy. |
| 11:52.10 | ep1220 | prpplague: is it HW test only, or also includes debugging ? |
| 11:54.05 | [g2] | So LDIC and DCSR are our friends :) |
| 11:54.15 | prpplague | http://www.amazon.com/exec/obidos/tg/detail/-/0750677309/qid=1117021996/sr=1-1/ref=sr_1_1/002-0698007-7396822?v=glance&s=books |
| 11:54.27 | prpplague | ep1220: both software and hardware, but its not jtag specific |
| 11:54.45 | prpplague | ep1220: mainly about procedures in testing |
| 11:54.54 | dyoung-zzzz | Wow, thats some coin! |
| 11:55.09 | prpplague | dyoung-zzzz: ?? |
| 11:55.23 | dyoung-zzzz | Maybe not too bad. |
| 11:55.34 | dyoung-zzzz | I thought it said $85 for a second there. |
| 11:55.43 | prpplague | oh, yea, its only 50 |
| 12:02.22 | [g2] | hey Tiersten did you catch what ep1220 was saying about directly loading the Icache ? |
| 12:02.34 | ep1220 | Is also available as e-book. Funny, costs more than the paperback. |
| 12:11.41 | ep1220 | [g2]: Do You have "public" specs of Your planned boards ? |
| 12:12.44 | [g2] | ep1220, It's only me. I'll be working with hw designers/team and outsourcing the contract manufacturing |
| 12:13.05 | [g2] | Initially I'm starting with re-worked items |
| 12:13.48 | [g2] | So the first couple dozen/hundred units will be aimed at developers |
| 12:14.21 | ep1220 | i C, for routers/small servers/.. (?) |
| 12:14.45 | [g2] | I see several different markets |
| 12:15.24 | [g2] | a) developers/hobbyists, b) fanless routers/servers, c) infrastructure |
| 12:16.28 | [g2] | I think just servicing market a) would be enough |
| 12:16.35 | dyoung-zzzz | Webcam glue device. |
| 12:16.41 | [g2] | and b and c are bonus items |
| 12:16.49 | ep1220 | You do complete kit, including case ? |
| 12:17.27 | [g2] | I'm talking to several mechanicals people now |
| 12:17.46 | [g2] | the case will probably drive the board layout |
| 12:18.09 | dyoung-zzzz | Made in USA? |
| 12:18.22 | [g2] | dyoung-zzzz, to start |
| 12:18.30 | dyoung-zzzz | Cool. |
| 12:19.02 | [g2] | I could be wrong but the shipping/time to go to asia is more expensive than the boards :) |
| 12:19.46 | dyoung-zzzz | I think youre wrong about that. |
| 12:20.18 | dyoung-zzzz | Injection Moulding is ludicrously cheap in china/se asia. |
| 12:20.38 | dyoung-zzzz | but I have fundemental problems with stuff made in Slave Labour Camps. |
| 12:20.50 | [g2] | well maybe you have connections there. I don't so it's at least weeks or months to sort out the connections |
| 12:21.57 | [g2] | well last I read the Chinese make $200 a year and save about 30% |
| 12:22.23 | dyoung-zzzz | We can talk when youre ready. |
| 12:23.04 | [g2] | Do you know IM moulding ppl over there ? |
| 12:23.24 | dyoung-zzzz | Joe Manual labourer makes around $6-$8/day. |
| 12:23.51 | dyoung-zzzz | I can ask around; but I seem to remember that one of my contacts does plastics as a contractor to HP. |
| 12:25.04 | [g2] | A cheap case is important |
| 12:25.35 | [g2] | it's actually the biggest roadblock right now |
| 12:25.54 | dyoung-zzzz | mail me some prelim size specs and I'll go poking around. |
| 12:25.56 | [g2] | But I'm looking into other alternatives |
| 12:26.36 | [g2] | Right now I'm starting on working to put together a costed BOM |
| 12:26.36 | ep1220 | [g2]: Maybe use a Mini-ITX case (?) |
| 12:26.42 | dyoung-zzzz | stamped aluminium will reduce EMI |
| 12:26.53 | [g2] | ep1220, That's one option |
| 12:27.02 | [g2] | but those cases are expensive |
| 12:27.15 | [g2] | $60-70 US |
| 12:28.29 | ep1220 | Street-price in the US ? |
| 12:28.54 | [g2] | I think for $70 Joe Laborer will bend custom cases |
| 12:29.42 | ep1220 | but likely You need to commit to a larger number. |
| 12:29.47 | [g2] | Allan does welding for racing cars I'm sure he'd know some connections or even be able to do something like that himself |
| 12:30.05 | [g2] | ep1220, that's the catch-22 |
| 12:30.27 | dyoung-zzzz | Oops, did I say day? That should be $6/week. |
| 12:30.52 | [g2] | cases cost $70 in low-quantity, but for a $15-25K stamp they can be $7 |
| 12:31.01 | dyoung-zzzz | anyways, yes. overseas manufacturing is cheep. |
| 12:31.08 | [g2] | so it's a case of volumne |
| 12:31.28 | ep1220 | g2: always :-( - and thus a question of money needed upfront |
| 12:31.39 | [g2] | Right but I may be able to buy someone elses cases that are already in volume |
| 12:31.49 | dyoung-zzzz | You ought to be able to fit the device in some commodity case. |
| 12:32.01 | [g2] | ep1220, it's really not so bad. |
| 12:32.02 | dyoung-zzzz | or use one of these extruded alumnium cases. |
| 12:32.12 | dyoung-zzzz | and select a boardsize appropriately. |
| 12:32.19 | dyoung-zzzz | then the only custom part is the end pieces. |
| 12:32.40 | [g2] | dyoung-zzzz, right that's the plan right now |
| 12:33.12 | dyoung-zzzz | and I know for sure you can get aluminum stampins in "small/medium" quanities for cheap. |
| 12:33.15 | [g2] | I'm looking to make a really affordable device |
| 12:33.52 | [g2] | I think initially the options will be a) No case and b) and expensive case |
| 12:34.00 | [g2] | or relatively expensive |
| 12:34.03 | [g2] | $40 |
| 12:34.14 | dyoung-zzzz | I think I would disagree.... |
| 12:34.46 | [g2] | what's the disagree part ? |
| 12:34.51 | dyoung-zzzz | But it kind of depends on the volume. |
| 12:35.07 | [g2] | well I'm talking the first 50 units |
| 12:35.11 | [g2] | or maybe the first 200 units |
| 12:35.15 | dyoung-zzzz | theres a significant price break on the PCB manufacture / layout. |
| 12:35.22 | [g2] | I really depends on the upfront costs |
| 12:35.31 | dyoung-zzzz | so if youre gonna make 10 with expensive case vs 100 with cheap case..... |
| 12:35.55 | [g2] | I don't think layout will be bad at all |
| 12:36.02 | [g2] | you know the size of the slug |
| 12:36.03 | dyoung-zzzz | you might as well sell the first 10 of the "cheap case" with no case. |
| 12:36.14 | dyoung-zzzz | true. |
| 12:36.38 | [g2] | dyoung-zzzz, that's exactly what I said: "a) no case .... b) expensive case" |
| 12:36.50 | dyoung-zzzz | oh yeah. |
| 12:37.14 | dyoung-zzzz | in that case, (a) I think. |
| 12:37.16 | [g2] | initially, I'll lose sales, but eventually it should work out |
| 12:37.41 | [g2] | or I'll find c) a reasonable cheap case |
| 12:37.59 | dyoung-zzzz | you should be able to find a commodity case. |
| 12:39.26 | dyoung-zzzz | Either way, I'm still gonna sign up for the "Developers kit". |
| 12:39.36 | [g2] | THX :) |
| 12:41.01 | dyoung-zzzz | lemme find my extruded aluminum links and send um to you. it might be a few days. but its incredibly cheap for those. |
| 12:41.02 | [g2] | ep1220, dyoung-zzzz I really want to find out about the RESET_IN_N line |
| 12:41.21 | [g2] | dyoung-zzzz, that'd be helpful thx |
| 12:41.30 | dyoung-zzzz | allan should be around soon. |
| 12:41.41 | dyoung-zzzz | or we could just mail him.... |
| 12:41.49 | [g2] | nod. I sent him an e-mail this morning about 45 minutes ago |
| 12:42.37 | [g2] | ok 75 minutes ago |
| 12:42.44 | dyoung-zzzz | ~slugtime |
| 12:42.46 | purl | hmm... slugtime is 40 hour days 10 hours in 4 timezones with overlap |
| 12:43.21 | [g2] | I truly love working with such talented motivated people |
| 12:43.45 | [g2] | I really hope to make a go of this hw thing and get a bigger company going |
| 12:45.08 | ep1220 | I too like this idea :-) |
| 12:45.49 | [g2] | My day-dream is to turn into the next Linksys except be all open |
| 12:46.24 | dyoung-zzzz | Good Plan. |
| 12:47.10 | dyoung-zzzz | I've started playing with my CoolRunner again. |
| 12:47.43 | dyoung-zzzz | debatng how much work its gonna be to invent a "dos-like" system on it.... |
| 12:47.49 | dyoung-zzzz | is there a FOSS DOS? |
| 12:47.56 | [g2] | think so |
| 12:48.09 | [g2] | FreeDOS ?? |
| 12:48.20 | dyoung-zzzz | then slap a SD/MMC card on it.... |
| 12:48.25 | [g2] | one of the guys in the ML for the slug was responsible for it |
| 12:48.29 | dyoung-zzzz | but thats a step for later. |
| 12:48.32 | dyoung-zzzz | oh? |
| 12:48.45 | [g2] | The guys that does all the |
| 12:48.53 | [g2] | distributed processing stuff at NIST |
| 12:49.12 | dyoung-zzzz | That would be a interesting port. |
| 12:49.13 | [g2] | He's been playing with slugs for last couple months |
| 12:49.36 | dyoung-zzzz | maybe i'l; bug him when I get closer to actually doing it. |
| 12:50.03 | [g2] | FREEBIOS maybe |
| 12:51.00 | dyoung-zzzz | I should google it first. What I need is picoblaze/DOS. |
| 12:51.29 | [g2] | I'd think you could just run QEMU on the slug |
| 12:53.08 | dyoung-zzzz | I need the power characteristics of a CR2. |
| 12:53.24 | dyoung-zzzz | althow low power, the slug still takes a few watts. |
| 12:56.58 | jacques | unfortunately it does not support system emulation on arm, only user :-( |
| 12:57.19 | jacques | but one of the devs says it shouldn't take too much work to get it there |
| 12:57.35 | jacques | it's missing the arm versions of certain functions |
| 12:57.39 | [g2] | jacques, are you familiar with softgun at all ? |
| 12:58.11 | jacques | [g2], not really, I've only looked at their site a few times to track their progress |
| 12:58.39 | [g2] | one of the guys in gentoo-embedded had a howto on it or was writing one up |
| 12:58.45 | [g2] | it's on the ml |
| 12:58.53 | [g2] | gentoo-embedded ml |
| 12:58.54 | [g2] | that is |
| 12:59.13 | jacques | very interesting - no BE yet tho ? |
| 13:00.02 | [g2] | dunno I haven't gotten around to that |
| 13:00.33 | jacques | I started messing with qemu fairly recently when lennert added armeb support |
| 13:05.31 | dyoung-zzzz | Has anyone seen lennert recently? |
| 13:05.48 | dyoung-zzzz | I'm kinda wondering if that serial cable ever made its way into his hands. |
| 13:05.53 | dyoung-zzzz | mailed him, but no reply. |
| 13:07.37 | jacques | hmm I haven't seen him |
| 13:25.13 | [g2] | kitno445 just arrived in nslu2-linux |
| 13:30.40 | *** join/#openjtag kitno455 (~man@tfhs.net) |
| 13:30.53 | kitno455 | hey, its all the same guys! |
| 13:31.03 | [g2] | a bunch |
| 13:31.07 | kitno455 | someone here wants to talk to me? |
| 13:31.09 | [g2] | ep1220, meet kitno455 |
| 13:31.39 | [g2] | ep1220, is kick'n ass on JTAG programming with both the USB 2.0 part and the FTDI part |
| 13:31.58 | kitno455 | greets to you ep1220 |
| 13:32.06 | kitno455 | explain these? |
| 13:32.15 | dyoung-zzzz | "these" ? |
| 13:32.28 | kitno455 | 'USB 2.0 part and the FTDI part' |
| 13:32.36 | kitno455 | status, etc |
| 13:32.40 | dyoung-zzzz | Oh. |
| 13:32.40 | [g2] | nod. |
| 13:32.52 | dyoung-zzzz | FTDI2232 |
| 13:33.05 | dyoung-zzzz | NEC controller chip found in nslu2 |
| 13:33.15 | kitno455 | right, i know it |
| 13:33.16 | [g2] | no..... |
| 13:33.33 | kitno455 | pic micro |
| 13:33.35 | [g2] | the FTDI is a USB chip |
| 13:33.51 | dyoung-zzzz | hehe |
| 13:33.58 | dyoung-zzzz | this is too funny. |
| 13:34.11 | [g2] | The CY68013 is the USB device chip used by the USB 2.0 adapter board for the Spartan 3 FPGA development board from digilent/xilinx |
| 13:34.24 | dyoung-zzzz | it is true you can buy the FTDI2232 in small quanitity from PIC Micro. |
| 13:34.37 | dyoung-zzzz | oh, THAT USB part. |
| 13:35.02 | dyoung-zzzz | I guess we were talking about apples and oranges AND bananas. |
| 13:35.14 | kitno455 | which one you want to be? |
| 13:35.14 | [g2] | So ep1220 has reprogrammed the USB 2.0 Cypress part on the S3 dev board AND is experimenting with the FTDI chip that can do JTAG |
| 13:35.29 | dyoung-zzzz | I'm a banana. |
| 13:35.32 | kitno455 | hold on, the ftdi talks jtag? |
| 13:35.44 | dyoung-zzzz | the 2232 talks jtag. |
| 13:35.46 | ka6sox-zzzz | dyoung-zzzz, I bought my FTDI parts from parallax..the Basic Stamp people |
| 13:35.50 | [g2] | The C rev of the part has a JTAG mode |
| 13:35.59 | kitno455 | is C rev in slug? |
| 13:36.14 | [g2] | kitno455, time out |
| 13:36.35 | [g2] | We are talking about doing high-speed JTAG programming to the SLUG |
| 13:36.51 | [g2] | none of these chips are ON the slug |
| 13:36.52 | kitno455 | ok, you building usb2.0 jtag programmer? |
| 13:36.57 | [g2] | exactly |
| 13:37.12 | kitno455 | using cypress devel chip |
| 13:37.20 | kitno455 | and ftdi chip? |
| 13:37.24 | dyoung-zzzz | OR FTDI 2232 |
| 13:37.29 | [g2] | two different approaches |
| 13:37.44 | kitno455 | ok, why the f*ck did you not say so to start with :) |
| 13:37.49 | [g2] | 1) Spartan 3 FPGA and Cypress USB 2.0 device |
| 13:37.53 | [g2] | 2) FTDI chip |
| 13:38.05 | kitno455 | fpga for jtag |
| 13:38.24 | ka6sox-zzzz | kinda circular eh? |
| 13:38.44 | dyoung-zzzz | your typical FPGA BSR is small though. |
| 13:39.03 | kitno455 | is there enough code over at opencores to get a usb2.0 device side AND jtag into a single fpga? |
| 13:39.23 | dyoung-zzzz | not quite, we'll need to write it. |
| 13:39.25 | [g2] | The point of all this is that by toggleing that RESET pin we may be able to load the on-board instruction cache directly |
| 13:39.53 | [g2] | ep1220, has it worked out except for getting access to that pin |
| 13:40.05 | [g2] | or something close to that |
| 13:40.29 | [g2] | the something close to that referring to the "has it all worked out" |
| 13:40.40 | kitno455 | ok, well thats good cause i dont know jtag from lpc, but i can use a meter to follow traces |
| 13:40.56 | [g2] | and that's the key help we need ! |
| 13:40.57 | dyoung-zzzz | ... but you can weld. |
| 13:41.03 | ep1220 | Hi kitno455, |
| 13:41.04 | kitno455 | yeah, i can weld |
| 13:41.06 | [g2] | and bend sheet metal |
| 13:41.11 | kitno455 | salutations |
| 13:41.21 | kitno455 | and design hi-performance suspensions |
| 13:41.30 | ep1220 | <PROTECTED> |
| 13:41.32 | ka6sox-zzzz | kitno455, yes there is plenty of room for both in a S3 |
| 13:41.54 | kitno455 | ka6sox-zzzz, does this mean that there is a branch #3 of this project? |
| 13:42.06 | kitno455 | do it all in a single fpga? |
| 13:42.10 | ka6sox-zzzz | 1) |
| 13:42.15 | dyoung-zzzz | that was the original plan. |
| 13:42.24 | dyoung-zzzz | but we got sidetracked. |
| 13:42.41 | ka6sox-zzzz | ya |
| 13:42.42 | kitno455 | but #1 now uses cypress (which is fine, nice and easy) |
| 13:43.02 | dyoung-zzzz | Except require $500 devkit |
| 13:43.17 | kitno455 | yeah, well, there is no free lunch |
| 13:43.20 | ka6sox-zzzz | because the cypress chip is the USB2 device that allows programming. |
| 13:43.32 | ka6sox-zzzz | Unintended side benefit. |
| 13:43.59 | kitno455 | ep1220, i intend to get you info about whatever traces you need tonight |
| 13:44.06 | ka6sox-zzzz | the FTDI chip came up because it has drivers that we can play with. |
| 13:44.07 | kitno455 | dont have board now |
| 13:44.16 | ep1220 | great :-) :-) |
| 13:44.24 | [g2] | kitno455, ep1220 THX |
| 13:44.39 | kitno455 | i also owe tommy some info on sdram and flash traces |
| 13:44.53 | ep1220 | kitno455: I need to write some SW as well. |
| 13:45.00 | ka6sox-zzzz | kitno455, I'm intersted in the same info here. |
| 13:45.10 | ep1220 | kitno455: So friday is early enough for me. |
| 13:45.12 | kitno455 | ok, i think there is a page on wiki |
| 13:45.22 | kitno455 | about pins i already found |
| 13:45.34 | kitno455 | i dont know if i can edit it, but if so, i will add to it |
| 13:48.11 | kitno455 | ok, have work to do will be back tonight or tomorrow morning. |
| 13:48.20 | kitno455 | adios |
| 13:48.30 | [g2] | kitno455, I think dyoung or ka6sox was saying there might be a NC for the CS line |
| 13:48.33 | [g2] | adius |
| 13:48.35 | [g2] | adios |
| 13:49.00 | ep1220 | kitno455: bye |
| 13:49.04 | dyoung-zzzz | night. |
| 13:49.06 | kitno455 | i will check, but i think CS lines on sdram were connected. but i will look agian |
| 13:49.23 | ka6sox-zzzz | nite dyoung-zzzz |
| 14:05.06 | [g2] | Ok Nokia gets it and goes to end my HW world-domination plan :) |
| 14:05.12 | [g2] | http://www.mobileburn.com/review.jsp?Id=1376 |
| 14:08.41 | prpplague | [g2]: hehe thats funny, i interviewed for a job at TI to do kdrive port to the omap1710 |
| 14:09.48 | prpplague | [g2]: by the time they offered me the job, i'd already accepted the one i am at now |
| 14:10.26 | [g2] | neat |
| 14:10.41 | [g2] | I'll bet you are happy where you're at ! |
| 14:11.58 | prpplague | [g2]: hehe, yea, more hardware experience |
| 14:12.23 | prpplague | [g2]: i've always been more on the software side of things, so working directly with the hardware designers is nice |
| 14:13.03 | [g2] | I've done that a couple jobs and I really thing the hw/sw connection is important |
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