Jump to content

poobah

+AtariAge Subscriber
  • Posts

    1,690
  • Joined

  • Last visited

  • Days Won

    3

Everything posted by poobah

  1. Well, that was 2 hours and 9 minutes of my life I wish I had back. Anyway, for the love of God, please don't make me play this again.... 387,800
  2. Wow, I'm not sure i hate myself enough to make a run at that score
  3. Yup that's the reason. You'd pop an infected disk in, boot up, virus gets loaded from boot sector of infected disk. Everytime you insert a new disk, the virus writes itself to the new disk's boot sector from memory Problems: 1) Infects more disks 2) If disk has a custom bootloader, the disk is wrecked and no longer boots This was a bit of a support problem for software publishers, so the warning was added to some disks to try and prevent it.
  4. I could have sworn ZModem had a resume function.
  5. Wow, this game is annoying. Stupid sea hag bottle collision detection is unconscionable 56,530
  6. That is not exact. There is no true concept of first and second field. The two fields don't necessarily are part of the same image. While the reality may be that each field is different, the NTSC spec clearly defines a frame as consisting of odd and even fields. You have to remember that the spec dates back to the 1930s, with color added in the 50s. A proper interlaced NTSC picture will conform to the spec. The A8 signal is not a proper NTSC signal- it takes advantage of the way the spec was implemented to work. You need odd and even fields to properly deinterlace a NTSC picture, period. If you don't know which frame you are on, you have to guess which ones to combine. It's what we are stuck with for the next few years, and, yes, it is exactly why your capture cards don't like A8 stuff. The cards expect a NTSC signal and they are not getting it. As to newer consoles providing a proper interlaced picture- yes, they do and no they don't flicker. They render to a back buffer and copy the buffer to the display buffer in sync to the television signal. You really couldn't do that on an A8 in 1977- memory was too expensive, and you had a 1.79 Mhz processor! (For reference, the NTSC pixel clock is about 15 MHz) Stupid trivia... the PC 18.2 Hz clock tick and the 1st PC's clock speed (4.77 MHz) are derived from the NTSC colorburst clock)
  7. Not sure if anyone hit this exactly yet. In a 'normal' NTSC picture, the odd lines are all scanned first. The device generating the image output a different sync signal for the even frame (its the half scan line you read in the documentation), that basically causes the TV to skip the first scan line. the result being that it paints the even numbered lines instead of the 'default' odd ones. The Atari never outputs the half scan line, so instead of doing 30 interlaced frames of 525 lines in 1 sec, the A8 gives 60 progressive frames at half that resolution. Thus, the A8 signal isn't really NTSC compliant, but most TV's don't care since they keep working normally without the line skip. The black bars between the Atari scan lines are the even NTSC lines that are never painted. Most capture cards expect to have to de-interlace the input to generate a progressive image. (i doubt anyone runs an interlaced PC monitor these days). The cards are expecting to see the 1/2 scan line signal so they know which frame is which. Cards that can't cope with the missing sync will have unpredictable results. LC TV's face a similar problem... they need to create a normal image out of the expected interlaced picture, which isn't interlaced. Your results may vary =P Note that the Atari really needs to work the way it does, otherwise, each 1/2 frame would only be updated 30 times/sec. It would flicker like 2600 PacMan. If you've ever worked on an interlaced PC monitor, you've seen exactly the effect.
  8. Well, that's all for tonight I'm such a sucker for the second enemy ship 62,700
  9. Wow, guess I better go play some more!
  10. Must stop playing this silly game! 42850
  11. Man, this is a lot of memorization! 28400
  12. Something like this? Except I don't have an LED for the Write protect switch, it's just labeled overdrive and normal. It says, "Override". Maybe you should paint some go faster stripes on it :0) Label it "Oscillation Overthruster" =P
  13. Wow! I won't be leading the pack this game... Nice Score!
  14. $5 a hit, but they look like really nice connectors
  15. I usually switch to the 2nd weapon (bullet spray) and forget shooting, just focus totally on dodging the enemy bullets.
  16. I was wondering that too. I wonder if it affects the bonus at the end of the level? Near as I can tell, each one is worth 1,000 points when you kill the end level boss.
  17. Phew, Wave 7! Mass Punktow! =P Bombs are KEY! Too many cheap deaths on the boss guy =[ 184636
  18. NICE. Now I gotta play some more!
×
×
  • Create New...