Subject:
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Re: Error at address 0x0000
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Wed, 8 Sep 1999 20:48:31 GMT
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Original-From:
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jacob_levirne@trilogy.comSPAMCAKE
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Viewed:
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704 times
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This was the case for the error that I was getting. I switched to a slower
machine and things worked after that.
-Jake
---------------------- Forwarded by Jacob Levirne/Trilogy on 09/08/1999
03:57 PM ---------------------------
"Dvorak Viktor" <dvorakv@cesnet.cz> on 08/28/1999 02:22:56 PM
Please respond to "Dvorak Viktor" <dvorakv@cesnet.cz>
To: <Jacob_Levirne@trilogy.com>
cc:
Subject: Re: Error at address 0x0000
Dear Jacob,
the same problem i have solved 4 days. Is solved now, but must prepare the
new files ready to send to others.
Now i can recommend.
1. There is a SW waiting loop which length is short for quicker CPU.
2. Use a Pentium till 200 MHz for downloading with the HBDL.EXE
3. Use a Pentium till 150 MHz for downloading with Charles Hacker
HandyBoard.exe
a. I am in contact with C. Hacker from Australia and V. Gerasimov MIT to
make the solution for quicker machines clear, ready for use etc..
Viktor Dvorak
dvorakv@mbox.cesnet.cz
-----Original Message-----
From: Jacob_Levirne@trilogy.com <Jacob_Levirne@trilogy.com>
To: handyboard@media.mit.edu <handyboard@media.mit.edu>
Date: Saturday, August 28, 1999 8:17 PM
Subject: Error at address 0x0000
> Hello,
>
> I've made it up to step 6.0.5 of assembling my first handyboard. I
> purchased the unassembled components from Patrick Hui, so there may be 1 • or
> 2 substitutes, but everything's gone smoothly so far. All previous
> assembly and testing steps have been completed successfully.
>
> When I power the board on, the 16 blocks appear on the LCD. They aren't
> faint though, they're pretty dark. The yellow charge LED flashes
> continuously.
>
> I power on while holding Stop to get into bootstrap mode. The 16 dark
> blocks appear on the LCD, and the charge LED doesn't flash.
>
> I run HBDL and choose to download pcode_hb.s19. The monitor downloads
> successfully, but as soon as the code begins to download I get the
> following message from HBDL: "Error at address 0x000"
>
> I looked at the mailing list archive, and realized I had a different
> version of pcode_hb.s19 (that I got with the commercial version of IC from
> Newton Labs), so I downloaded pcode_hb.s19 from the HandyBoard web site. • I
> still get the same problem.
>
> So far, here's what I've done:
>
> Rechecked pin 28 of the memory chip to make sure it is getting 5v.
> Unplugged the memory chip and powered on-- the yellow charge LED doesn't
> flash anymore
> Checked the voltages on other pins of the memory chip-- most are at 2.6v
> (not sure if this is good)
> Checked my solders and everything looks ok to the naked eye.
> No components feel hot when the board is powered on.
>
> Any help would be greatly appreciated.
> -Jake
>
>
>
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Message has 1 Reply:
 | | Re: Error at address 0x0000
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| Hello, i have the same problem with the Error at address 0x0000. First i checked the hardware (Ram,Latch...) but i cant't find a bug. In the archive i found this message that descibe a softwarebug on faster machines. But i tested HBDL with a P133 (...) (25 years ago, 12-Oct-99, to lugnet.robotics.handyboard)
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