Subject:
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Re: downloading the pcode during assembly
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Newsgroups:
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lugnet.robotics.handyboard
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Date:
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Tue, 16 Jan 2001 21:52:41 GMT
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Viewed:
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1067 times
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It is possible that the pins of the 68HC11 chip are not making good contact in
the socket. To fix the problem remove the chip, take a sewing push pin and make
a hook in the tip. Use it to very gently pull out each pin connection in the
CPU socket. Be carefull as to not over do it, and keep them all as even as
possible. This happens if a chip has been inserted and removed, and if the chip
was pushed into the socket unevenly. -Dan
In lugnet.robotics.handyboard, Claudiu Patt writes:
> hi,
>
> I am during the assembly phase where I am supposed to be able to =
> download the pcode to the handy board.
> I've placed on my handyboard a UM62256A-10L as RAM a MC47HC132N and a =
> PICVUE 16x2 LCD PVC160203P
> All the test from the handyboard assembly manual until now where ok. =
> When I plug my LCD It shows a dark single row of blocks. I tried =
> downloading the pcode using dl, dlm hdlm under windows dos and linux on =
> a Pentium 200 MMX and a 386 DX 40 MHz without succes. hdlm displayed =
> Error downloading byte #0x06. dl downloads 90% and freezes if i don't =
> use the -bs_ignore option. With the -bs_ignore option it says download =
> succesfull and fails to sincronize with the board. Dlm recognises =
> bootstrap mode corectly, but does the same as dl.=20
>
> With the debug option for dlm i can see what dlm sends and receives from =
> the board, send and receive caracters are not the same but i suppose =
> that's how it should be.It stops at 90% by sending 00 and receiving =
> 0080, and fails to sincronize with the board by sending 73 and receiving =
> one time 0080 and then nothing.
>
> I' tried with and without the LCD.The voltage at RAM pin 28 is +5V at =
> the MC74HC132N the same, and my E-clock frequency is 2.22 Mhz ( is that =
> a problem?).
>
> I read the reference guide from motorola and it said there that the MCU =
> should be in single chip (Mode 0) or expanded Mode 1 ) that Means MODB =
> allways 1 and MODA 0 for first case and 1 for the second one.
> Acording to the handiboard's wiring i could never reach any of them for =
> MODB is allways connected to the ground.
>
> Special Bootstrap mode should mean MODB=3DMODA=3D0 and special test mode =
> MODB=3D0 MODA=3D1
> I correctly reached bootstrap mode and when dlm or dl get stuck my board =
> jumps directly in Special test mode.
>
> Question: Is that Normal?=20
> Am I doing something wrong with the dl or dlm parameters, what does the =
> hdlm error mean ?
> Can I solve this problem ? How?
>
> Any suggestions what soever are welcome.
>
> Thnx
>
> Max.
> =20
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Message is in Reply To:
 | | downloading the pcode during assembly
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| hi, I am during the assembly phase where I am supposed to be able to download the pcode to the handy board. I've placed on my handyboard a UM62256A-10L as RAM a MC47HC132N and a PICVUE 16x2 LCD PVC160203P All the test from the handyboard assembly (...) (24 years ago, 12-Nov-00, to lugnet.robotics.handyboard)
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