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shoestring

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Posts posted by shoestring


  1. Heard that argument a lot way back in school from students who owned Apple IIs. Since when were they ever using their computers to do anything seriously or business related ? They were playing video games just like we were albeit on a different platform. But that didn’t stop them from making derogatory comments like “you only own a Commodore “ or “Games computer”. It was a coping mechanism because they knew we had access to the best quality games on the market at the time.

    • Like 2

  2. Wouldn’t be fast enough using traditional methods.

     

    In a nutshell, VSP allows you do fast scrolling without having to copy data, this frees up the cpu to do other things.

     

    Unfortunately microsecond timing is required, so pcb layout and temperature can affect the reliability of the technique. Thankfully my breadbin appears to be immune to it. The reloaded board has a workaround to prevent VSP related crashes.

     

    http://wiki.icomp.de/wiki/VSP-Fix

    • Like 3

  3. Just for fun, I logged into Lemon64 and made a search for Atari. About once a year, someone posts or comments to a thread that has Atari in its name. Sometimes people mention Atari in the passing, but nobody seems particularly hateful, envious or other strong feelings about the Atari 8-bit computers.

     

    Possibly some of those who posted C64 related threads here recently are trolls trying to drum up some strong feelings, I'm not sure?

    There are plenty of ZX bashing threads though. Most of the users on lemon are U.K based where there was bitter rivalry between Commodore and Spectrum or Amstrad CPC users. Every other system was irrelevant.


  4. If you run this on a C128 it uses the 2mhz borders trick and you get no slowdowns.

    Interesting, I wish I had not sold my c128 to see this in action

     

    The slow down ruins the gameplay for me but it’s still a remarkable achievement. Just shows

    what can be achieved on a stock 64 and how flexible the SID chip can be.


  5. I saw this . . . kinda meh from me. I've already played this game re-released on every Nintendo system ever. I can't really get too excited about a C64 version. I wish they had done something new with it.

     

    Graphics are slightly different but the sound is spot on and game play is close to the original.

     

    I haven't had enough time to play it but I'll be spending a few hours on it tonight to see what the fuss is all about :)

    • Like 1

  6. I don't agree that the Ultimate 64 is a "must have". To me it is just a hardware based emulator (*), though a rather good one I would assume. However nobody yet mentioned the 1541 Ultimate cartridge, now called Ultimate II+ which is made by the same people but only replaces the floppy drive with added features for

     

    Yes, I meant the Ultimate II+. It's the swiss army knife of cartridges for thr c64


  7. 15 is too long. In the old days CRTs took awhile to warm up because they used vacuum tubes.

     

    Is the brightness weak on the monitor ?

     

    Could be bad caps in the power supply section. I don't have a crystal ball but the first thing I would check is the B+ voltage to the flyback.

    • Like 1

  8. That's interesting but it makes sense, the more chips then more that can potentially can go wrong.

     

    But I like how nice and clean the early Apple IIs look inside, it's like a work of art the way Woz laid out the components. He took a lot of pride in his designs.

     

    I've had to go beyond 20 seconds on some occasions to get a clean cold boot. I'm not sure why this happens, does the boot up sequence in the rom not include a routine to clear the main and aux mem ?


  9. I used them quite extensively in school too and I can't recall ever seeing it.

     

    The later Apple IIes seem to be a bit flaky nowadays. Apple used the cheaper single wipe sockets in those and they can be quite troublesome with the metal tabs inside losing their springiness. I do recall my machine booting to junk after moving it from one side of the room to another so I put it down to that after a re-seat of the main chips fixed it. If I end up getting another 2e enhanced then it's going to get a set of high quality dual wipe sockets.


  10. My IIe Enhanced did this in between powerups if I didn't wait between 20-30 seconds on many occasions.

     

    I'm not sure what causes it. The built in diagnostic never found an issue and I tested the DRAMs out of circuit too. The user manual also states to wait at least 30 seconds before powering back up ( page 41 ) so this could be normal.

     

    https://www.apple.asimov.net/documentation/hardware/machines/Apple%20IIe%20Owner%27s%20Guide.pdf

     

    My theory is the DRAMs may still contain some data after a cold reboot which crashes the machine when it's powered back on, so allow 20-30 seconds.

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