Kevin Vance - My pcHDTV HD-5500 tuner card is dead, and it looks like it's my…

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04:45 pm

Wednesday, July 23rd, 2008
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My pcHDTV HD-5500 tuner card is dead, and it looks like it's my fault. Last week, I put another 4GB of RAM into my newest computer, apollo. While I was working, I must have bumped the card partially out of its slot. Since I have another HD tuner, I didn't even notice anything was wrong. When I reseated the card, the driver loaded but it generated a lot of IRQ errors when I tried using it. Damn.

On the plus side, 8 gigs of RAM.
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[User Picture]From: dariusk
2008-07-23 09:32 pm (UTC)
Can you *address* that much RAM?
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[User Picture]From: dariusk
2008-07-23 09:43 pm (UTC)
I know that 4GB is the physical upper bound for a 32-bit system, but I wasn't sure what hardware architecture limitations exist on current 64-bit systems (since they can address RAM in the exabytes, but obviously we're not building address buses etc for that kind of stuff just yet).
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[User Picture]From: kvance
2008-07-23 09:56 pm (UTC)
Seems to check out:
% cat >test.c
#include <stdlib.h>
#include <stdio.h>

int main()
{

        const size_t SIZE = 6L * 1024*1024*1024; /* All 8G are not free :P */
        char *c = malloc(SIZE);
        off_t i;

        for(i = 0; i < SIZE; i += 512L * 1024*1024) {
                c[i] = 'A';
                printf("c[%12llX] = '%c'\n", i, c[i]);
        }

        free(c);
        return 0;
}
% gcc -o test ./test.c
% ./test
c[           0] = 'A'
c[    20000000] = 'A'
c[    40000000] = 'A'
c[    60000000] = 'A'
c[    80000000] = 'A'
c[    A0000000] = 'A'
c[    C0000000] = 'A'
c[    E0000000] = 'A'
c[   100000000] = 'A'
c[   120000000] = 'A'
c[   140000000] = 'A'
c[   160000000] = 'A'


Edited at 2008-07-23 09:56 pm (UTC)
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[User Picture]From: dariusk
2008-07-23 09:58 pm (UTC)
Cool.
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[User Picture]From: wikle
2008-07-23 10:51 pm (UTC)
Was that one of your HD cards that they can't make anymore cause of some kind of limitation on hardware? I remember back in undergrad you were buying the HD cards because there was some nonsense about putting in hardware limitations on what they could record, did they ever do that?
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[User Picture]From: kvance
2008-07-23 11:25 pm (UTC)
The FCC backed off on the "broadcast flag", so pcHDTV cards are still legal to buy. Every once in a while, MS media center, TiVo, etc. users are treated to an example of it though, since they all implemented it and sometimes cable providers turn it on by accident.
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From: entropy512
2008-07-24 11:48 am (UTC)
Consider the HDHomeRun as a replacement - It's much easier to use since it's an external unit, and it is well supported by MythTV.

I have one and I love it.
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