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Hi All, I have pulled my RCX out of summer storage and I am trying to bring it to life. I have tried to download the 2.0 Firmware (firm0328.lgo) dozens of times with no success. It starts to download, then somewhere in the middle, or very close to (...) (22 years ago, 9-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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Also: When it seems to get to the very end before the error appears, I sometimes get a long (3-4 seconds) low tone from the RCX. Matt (22 years ago, 9-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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Matt, I discovered that the IR LED's and detector on my serial tower was located higher than I expected and pointed upward somewhat. I was able to get better transfers when the tower was leaning forward (pointing downward so to speak). Otherwise, I (...) (22 years ago, 9-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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A likely explanation for your downloading problem is the following. Standard Lego software uses 2400 baud data rate and a protocol that sends "double" bytes. The "double" byte is that each data byte is followed by its complement. Alternative (...) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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The low buzz tone is an error generated by the ROM firmware for failure condition detected as part of the "unlock firmware" opcode. There are two causes of this. [1] ROM software calculates a checksum value of the downloaded firmware and this (...) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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(...) ... (...) Dick and others, Thanks - this helped. What I did to solve this was run the NCQ command-line download at "normal" speed. This worked the first time. Interestingly, I am not sure that the Bricx (v3.3) download was running quad speed (...) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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(...) Look at Edit/Preferences. On the General tab is a checkbox labeled "Use fast mode when downloading firmware" You can uncheck that option to use normal speed firmware downloads via BricxCC. John Hansen (URL) (22 years ago, 10-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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(...) It's funny that you should bring this up - I've had exactly the same problems with several RCX's and downloading firmware from BrixCC. The only solution I've been able to find is to download the firmware using the RIS2.0 software and then (...) (22 years ago, 13-Dec-02, to lugnet.robotics.rcx)
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| | Re: Firmware download troubles
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(...) The problem he's describing, if it's the same one I have, is independant of the position, direction, and power level of the tower. It seems to have something to do with BrixCC itself. The only thing I find puzzling is that Matt (the other Matt (...) (22 years ago, 13-Dec-02, to lugnet.robotics.rcx)
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| | RE: Firmware download troubles
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The size of the firmware isn't going past the 0xcc00 boundary, is it? The firmware in the RCX only does a sum on the bytes up to 0xCBFF in the downloaded firmware, as far as I recall... Cheers, Ralph (22 years ago, 13-Dec-02, to lugnet.robotics.rcx)
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