irclog2html for #edev on 20060514

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05:16.45jbevrenheh
05:18.10T0mWpogo?
05:18.30jbevrenspring-loaded contact pins on the end of a header
05:18.35jbevrenfor solderless connection to pcb pads
05:18.45jbevrenhttp://www.az-electronics.com/comersus/store/comersus_viewItem.asp?idProduct=18
05:19.26jbevrenmost likely named after pogo sticks heh
05:20.14T0mWcrappy photo
05:22.30T0mWsomebody's brain-fart
05:23.23jbevrenIve seen pogo pins in use on a board-specific test/programming rig
05:23.38jbevrenbut I cant see that header staying put long enough to get a boundary scan started heh
05:32.01T0mWI'd done ATE stuff in the past, so, I know the pogo pins (bed of nails, etc).
05:32.11T0mWlooooooooooooong time ago
05:32.24jbevrenheh
05:33.07T0mWyeah, almost 30 years ago, was doing ATE software for GenRad 2270, 1795, 1796
05:33.24T0mWmy first "real" programming job
05:35.02T0mWah
05:35.33jbevrenI finally put my 51ohm resistors on order (I'm a lazy sod) so I can finish my wiggler
05:35.34jbevren:P
05:35.36T0mWpoint to the member inside the structure, not the structure itself, doh!
05:36.01T0mWjbevren: signals look that bad?
05:36.04jbevrenwell
05:36.11jbevrenI wasnt using resistors at all on my wiggler
05:36.18jbevrenand boundary scanning my wiggler would crash it
05:36.30jbevren(crash it so badly that it wouldnt respond to a second boundary scan)
05:36.38jbevrener
05:36.43jbevrennot wiggler, pixterMM
05:36.51T0mWah, and you saw undershoot & overshoot then
05:37.00T0mWring
05:37.05jbevrenprobably so; I havent scoped it
05:37.27jbevrenI use a 3.3v buffer with 5v IO to buffer the paraport
05:37.49T0mWyeah, I've problems with this board debugging with jtag.  the BDI2000 loses control of the two processors occasionally.
05:38.11T0mWfortunately, it only happens when I try to reset the board, not while tracing
05:38.33jbevren(74lvc244)
05:38.44T0mWI'm daisy chaining the two cpus onto on JTAG circuit
05:38.51T0mWs/on/one/
05:39.05jbevrenat any rate, the first boundary scan works, the second doesnt (as the cpu core is insane afterward)
05:39.13T0mWpurl: bitchslap purl
05:39.15purlACTION beats the sh*t out of purl
05:39.25T0mWLOL
05:39.41T0mWinsane cpu
05:39.44T0mWheh
05:39.49jbevrenhehe
05:39.55jbevrensane=working, known state
05:39.59jbevreninsane=otherwise/deadlocked
05:40.04T0mWmicrocode engine is shot to h#ll
05:40.06jbevrenlike the JAM instruction on a 6502
05:40.08jbevrenyep
05:40.15jbevrenjams the core up
05:40.27jbevren(6502 isnt microcoded, so lots of instructions can jam it up)
05:40.47jbevrenthe 65c02 is microcoded, so $02 becomes NOP
05:40.54T0mW8742 with a spike one of the IO pins would jam the microcode engine and even a hard reset would not pull it out of it.  You had to power cycle the thing.
05:41.10jbevrenthat's a hard lock :)
05:41.17jbevrenyou cant jam the 6502 beyond hard reset afaik
05:41.19T0mWdefinately
05:42.22jbevrenat any rate, I hope the 51ohm resistors let the dang thing work (I'm using the sf.net schematic)
05:42.34jbevrenI really want to get into toying with devices
05:42.36T0mW8042 was a POS processor to work on anyway.  sort of like an 8051 but badly crippled (e.g. you could access memory on 256 byte pages, but could not cross a page boundry on a access or it would wrap)
05:42.49jbevrenheh
05:42.53jbevren6502 was like that, somewhat
05:42.57T0mWjbevren: what are you going to tinker with?
05:43.05jbevrenT0mW: juicebox first since its well documented
05:43.12jbevrenthat way I can become familiar with the tools
05:43.19jbevrenthen I'll prod at my pixter MM
05:43.50T0mWok, so, you have the wiggler and you have gdb, what is between gdb and the wiggler?
05:43.52jbevrenmy sister has a dlink router she doesnt use, one of the ones that use an arm7 with 8M ram
05:44.00jbevrenheh
05:44.02jbevrennot gdb just yet
05:44.07T0mWocdaemon?
05:44.08jbevrenI got the free version of ocd commander
05:44.12T0mWok
05:44.21jbevrensadly my jtag box is windows-based since the xilinx tools wont install in debian linux
05:44.23T0mWfigured as much
05:44.25jbevrenanyway
05:44.29jbevrenthat to the wiggler
05:44.32jbevrenover cat5 heh
05:44.45jbevrenthen a short cat5 from the wiggler (on protoboard) to the pixter
05:45.09T0mWI bit the bullet, all these cool ARM cpus with JTAG, I bought the BDI2000.  not sorry either, it is great.
05:45.21jbevrensounds pricey heh
05:45.31T0mWit was, $2700
05:45.41jbevrenfor a professional, I can see that
05:45.44jbevrenI'm a hobbyist ;-)
05:45.58jbevrenI'll be happy with a nice slow wiggler ;-)
05:46.03T0mWbut, I'm here on a linux box using Insight to debug two CPUs at the same time (two instances of Insight)
05:46.11T0mWyeah
05:46.25T0mWthe PITA is getting the stupid wiggler stuff setup though
05:46.33jbevrennod, as I've read
05:46.48jbevrenI'm reading about armtool atm
05:47.13T0mWWhen I was tinkering with the Tuxscreen, I found the wiggler uploader to be so sensitive to *anything*.  Sometimes you had to play with it to get it to work.
05:47.22T0mWthat didn't please me
05:47.50jbevrenif things go reasonably (they dont have to be perfect), I might look into a linux-supported usb jtagger
05:48.09T0mWThere is someone on the LPC2000 list over at yahoo that is building a OSS version of the OCDAEMON
05:48.16jbevrenthat said, I do have a nice usb device with a FTDI and sx52 on it
05:48.28jbevrenOpenOCD?
05:48.33T0mWyeah
05:48.40jbevrenI've heard rumblings about that
05:48.57jbevrenif I could just get the stinking xilinx tools to install in linux.. ;-)
05:48.58T0mWnot sure, but I think that he has it working on ARM7TDMI
05:49.15jbevrenall of my devices (except one) are arm7
05:49.18T0mWjbevren: I use VMware for that stuff
05:49.19jbevrenI have one arm9
05:50.05T0mWwell solve my atoi() issue, now to fix the rest of my coding mistakes. cul
05:50.05jbevren(the gp2x uses a mmsp dual-core IC from MagicEyes)
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08:14.28jbevrenhm
08:14.36jbevrenmatrix memory 11247-01
08:15.19jbevrenone of my pixter mm carts uses that (in lieu of chip-on-board rom)
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17:51.39jbevrenhm
18:08.30jbevrenyeah thats f'in grand
18:08.37jbevrenhow do you tell the wiki your page is preformatted?
18:17.19jbevrengot it
18:25.10jbevrenlol doh
18:25.16jbevrenimage too large for the page
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