Subject:
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Re: ROM image using USB tower
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Newsgroups:
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lugnet.robotics.rcx
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Date:
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Thu, 11 Dec 2003 18:31:11 GMT
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Viewed:
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7166 times
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Okay, I gave in and bought one of the serial towers listed on bricklink.
I now have a ROM image, but am unable to disassemble it. Whatever
options I pass to h8300-hitachi-hms-objdump I get:
BFD: rom.srec:12: Unexpected character `0' in S-record file
I notice in the srec file that every 12th line is shorter then the rest,
is this wrong/part of the problem?
Could someone post an MD5 sum of a known good ROM image so I can check
mine is right?
Andrew
Chris Phillips wrote:
> Andrew,
>
> I grabbed a ROM image awhile back using a serial tower and an RCX 1.0. I
> haven't tried this on a 2.0 brick, but I think the ROMware is identical in all
> RCX versions.
>
> Although Kekoa's SEND.C uses the serial tower, it is not too hard to substitute
> a USB tower for a serial tower on WIN32. There are two "secrets" to doing this:
>
> 1. Open the tower using the WIN32 CreateFile() API function as if it were a COM
> port, but instead of a device name of "\\.\COM1", use a device name of
> "\\.\LEGOTOWER1" to open the USB tower. (Additional USB towers presumably can
> be accessed by incrementing the number, but I've never tried this.)
> 2. The USB tower driver automatically "eats" the echo characters that are
> received by the tower as it transmits, so there is no need to read and discard
> your output bytes as you transmit.
>
> Of course, SEND.C was written to use fileio-style device access, so there are a
> few other steps to convert this program to work under WIN32. If you are not
> able to get this working on your own, drop me an e-mail and I'll see if I can
> post a version of SEND.C that has been converted to work with the USB tower.
>
> You also need the original FIRM0309.LGO file, as Kekoa's firmware patch will not
> work with the newer FIRM0328.LGO. I am not sure of a way for you to get a
> legitimate copy of the older firmware file if you don't already have it.
>
> I've had an idea kicking around for a way to update this procedure to work more
> automatically (without a specific firmware file or even a PERL interpreter) but
> I will not be able to do anything with it until sometime next week at the
> earliest. Again, drop me an e-mail if you are desperate for an immediate
> solution.
>
> You could also search BrickLink to see if anyone there is selling a serial IR
> tower and/or an old RIS 1.0 CD-ROM. For example, I see two IR towers for sale
> there, (cable sold separately!) one of which will ship internationally:
> http://www.bricklink.com/search.asp?q=x87&searchSort=Q&sz=100&sellerUsername=&t=&c=&u=&i=&uR=&invNew=&itemType=P&invType=
> This might be the easiest way for you to get what you need to make Kekoa's
> procedure work.
>
> For those of you just joining tonight's broadcast, you can find the ROMware
> upload instructions on the following page:
>
> http://www.crynwr.com/lego-robotics/rom-image.html
>
> I hope this helps!
>
> - Chris.
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Message is in Reply To:
 | | Re: ROM image using USB tower
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| (...) Andrew, I grabbed a ROM image awhile back using a serial tower and an RCX 1.0. I haven't tried this on a 2.0 brick, but I think the ROMware is identical in all RCX versions. Although Kekoa's SEND.C uses the serial tower, it is not too hard to (...) (23 years ago, 12-Nov-03, to lugnet.robotics.rcx)
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