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Bruce Tomlin

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Posts posted by Bruce Tomlin


  1. You aren't by any chance trying to use an automatic RF switchbox with your VCS, are you?  All 2600 models AFAIK (due to a restriction placed on Atari by the FCC) put out a rather weak signal, which is not of sufficient strength to properly trigger the auto-switching RF boxes (the kind that came with NES, SNES and Genesis systems).

    Auto RF switchboxes aren't triggered by a "signal". They have five volts applied to the output, added after a capacitor from the RF modulator (for DC blocking). The RF is simply mixed into the wire on top of the DC power. Which is why you shouldn't use an old manual switch with a modern system.


  2. great,

     

    now can somebody tell me anything about the tandy multi-pak interface i found for $2? looks sorta like a 2600 game brain for the coco. now if i could just imagine i like 4 coco games enough to use it :P

    Be warned that most of these are incompatible with the CoCo 3, due to bus conflicts from a sloppily programmed PAL chip in the MMPI. There are people who sell a replacement chip which is compatible.

     

    I have read an old chip (thanks to buying an old PAL programmer from ebay) and posted the results on comp.sys.tandy, so it should be possible for someone with the right know-how to make their own.


  3. Did you actually try running the OS X version as uploaded? By making a regular zip file of it, any unix flags (like execute) disappear, and if it's Carbon (which I think it may be), the resource fork will disappear too.

     

    If I give it a "chmod +x", I still can't get it to do anything.


  4. If it's "missing", where does it go? He has a picture of the wire wrap board, and it's two ROM chips, a RAM chip, and a TTL chip. No sign of any room for a Pokey.

     

    Although I have been thinking of the possibility that there may have been a different dev board with a Pokey (since I've heard most 7800 development was done with RAM carts and/or EPROM emulation), why wouldn't this one have it?


  5. Hey.. you can send it to me at thehistorian(at)gmail.com, I'll then pop it up on Atariforce.com and you can download from there..  

     

    Got to love gmail's 1gig storage..

    Did you get my e-mail? I sent you a link to the file on my web server, but it doesn't look like you've accessed it yet.


  6. Not too hard.

     

    http://xi6.com/hacks/7800dump.html

     

    Mostly it involves 1) converting the 7800 to take an EPROM, 2) building a serial cable for the joystick port, using a MAX232 chip, and 3) adding a resistor pack to force the bus float to help identify dead address space.

     

    A few warnings, though. First, the Cuttle Cart 2 doesn't seem to like that resistor pack I added to force bus float. So don't do this on your only system. Second, some of the dumper code doesn't work right. In particular, I know I never got Activision FE bank switching working, and I'm almost certain (from looking at dumps that I had made in the past) that the code to dump Parker Brothers bankswitching is broken.


  7. Wow!  I mean, REALLY WOW!

    I assume that the description of "working" for the 5200 module means that it will actually run 7800 games on a 5200 system?  Amazing!  I am guessing that there would pretty much have to be an almost complete 7800 stuffed

    If it's built like the schematics, it doesn't have a ROM, so you have to flip a switch to select 2600 vs 7800 mode. Either way, it's still a "parasite" module, just using the base for power in and A/V out.


  8. Either of the above methods really depend on the quality of the cable you use. I used option #2 before finally going with option #3.

     

    3. S-video mod. Especially with an S-video male to dual RCA male cable (which Fry's sells for five bucks), connected to a Commodore monitor. Done properly, this will not affect the RF output, so you can have dual screens for showing your 7800 off to a group.


  9. Holy postage stamp, Batman!

     

    What's funny is that as the camera panned sideways in a long shot, I actually craned my neck following that label with the funny plus-shape on it, just because it wasn't familiar!

     

    Oh yeah, five bucks each. Riiiiiight. Pac-Man might be worth half that new in an unopened box. A hundred each for a console? Maybe with original box and instructions in good condition.


  10. AHA! One, he's running FTP on a wierd port. Two, he's running the Windows 2000 FTP server. Three... the server doesn't support passive mode. So not only will it not work behind a firewall, your average web client probably won't know how to use active mode. Great way to keep your bandwidth usage down.

     

    "ftp -A " worked for me.

     

    Now to see about how to get it out to you guys. Looks like a job for Bittorrent. I guess I should figure out how to set up a BT tracker.


  11. Even if the games did suck, the story is cool. Hearing that he had no TIA documentation to work from easily explains why the games were so crappy. This even beats out the "US Games re-uses Space Jockey as a 2600 subroutine library" story.

     

    The games sucked, but they sucked so badly as to be memorable in their suckage. It's one thing to suck, but it's another thing entirely to suck so much you become famous for it.

     

    I presume he is aware by now that he's got the easy road to a VIP guest pass at just about any classic games convention, right? :-)


  12. It would be so much better if this were for an MMC card instead of CF. Not only is MMC smaller, but it's got a lot less pins to solder down. It worked great for the Cuttle Cart 2, aside from the minor issue of the CF socket used in the CC2 going out of production. Even a Playstation 2 memory card would be nice.

     

    I'm not aware that any Colecovision carts used bank switching, or even on-cart RAM. A Colecovision equivalent of the Cuttle Cart would be much easier to design than a 2600/7800 version.

     

    It would be even better if it could be designed to somehow replace the Adam tape drive. Yes, that would probably mean patching the Adam BIOS, but it would be the ultimate in cool.


  13. That first picture is at digital camera resolution with only a HEIGHT and WIDTH attribute to shrink it down to a thumbnail. In addition to taking almost an entire minute to load over DSL, this is a great way to suck up bandwidth and piss off your webmaster. It needs a downsampled image VERY badly. In fact, digital camera resolution is too much even for the linked image.

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