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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Fri, 12 Jan 2001 15:20:32 GMT
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Viewed:
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887 times
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The HB is supposed to be in special test mode, see
http://handyboard.com/faq/display.php?key=memmap .
Re your downloading problems, first, see the debug info at
http://handyboard.com/faq/display.php?key=baddl
After the Windows serial debug test there, make sure that the serial
signals are getting from the HB's RJ11 connector to the 68HC11 pins.
Use a scope if necessary.
Then start looking at the memory wires, checking that all are
connected properly to the HC11 and/or 74HC373 and associated cktry
(use schematic).
Fred
In your message you said:
> 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 p
lug 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 D
X 40 MHz without succes. hdlm displayed Error downloading byte #0x06. dl downl
oads 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.
>
> 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 sincro
nize 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 MC7 • 4HC132N 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 shoul
d 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=MODA=0 and special test mode MODB=0 M • ODA=1
> I correctly reached bootstrap mode and when dlm or dl get stuck my board jump • s directly in Special test mode.
>
> Question: Is that Normal?
> 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.
>
>
>
> --
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Message is in Reply To:
 | | downloading the pcode during assembly
|
| 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 (...) (23 years ago, 12-Nov-00, to lugnet.robotics.handyboard)
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