cl3a+@andrew.cmu.edu (Chee Leong Lee) (06/19/91)
If we disable the de-interlacer (flick on the bypass) on the A3000, what would be the output frequency of the 31Khz port? Would it still be 31Khz or 15Khz? +--------------------------+----------------------------+ | Chee-Leong Lee (William) | CMU Box 127, 4825 Frew St. | | ID: cl3a@andrew.cmu.edu | Pittsburgh, PA 15213-3890. | +--------------------------+----------------------------+ | All standard disclaimers apply. | +-------------------------------------------------------+
mucci@silver.lcs.mit.edu (Philip J. Mucci) (06/19/91)
Hi, I'm about to upgrade to an A3000 through the power-up program. I don't quite have enough for the 25Mhz machine. I am figuring on buying a C compiler and Imagine. What are people's opinion on this? How many of you have the 16Mhz machines? Thanks, -phil
daveh@cbmvax.commodore.com (Dave Haynie) (06/19/91)
In article <IcLYxJ600awXQ9aGAv@andrew.cmu.edu> cl3a+@andrew.cmu.edu (Chee Leong Lee) writes: >If we disable the de-interlacer (flick on the bypass) on the A3000, >what would be the output frequency of the 31Khz port? Well, then, all scan conversion is bypassed. So modes that generated as 15kHz remain 15kHz, and those that are generated as 31kHz remain 31kHz. When the scan converter is on, it only does as much conversion as it thinks necessary. Any 31kHz display is passed out unchanged. Any 15kHz non-interlaced display is scanline-doubled, and any 15kHz interlaced display is frame doubled. >Would it still be 31Khz or 15Khz? Yes. -- Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests" {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: hazy BIX: hazy "This is my mistake. Let me make it good." -R.E.M.
darrell@comspec.uucp (Darrell Grainger) (06/21/91)
In article <22559@cbmvax.commodore.com> daveh@cbmvax.commodore.com (Dave Haynie) writes: >In article <IcLYxJ600awXQ9aGAv@andrew.cmu.edu> cl3a+@andrew.cmu.edu (Chee Leong Lee) writes: > >>If we disable the de-interlacer (flick on the bypass) on the A3000, >>what would be the output frequency of the 31Khz port? > >Well, then, all scan conversion is bypassed. So modes that generated as 15kHz >remain 15kHz, and those that are generated as 31kHz remain 31kHz. When the >scan converter is on, it only does as much conversion as it thinks necessary. >Any 31kHz display is passed out unchanged. Any 15kHz non-interlaced display >is scanline-doubled, and any 15kHz interlaced display is frame doubled. > >>Would it still be 31Khz or 15Khz? > >Yes. Which modes (640x400, 640x480, 320x256, etc) would be output at 31.5 kHz? My guess is that the 640x480 mode is at 31.5 kHz. 640x400, 320x400, 1280x400, 640x512, 320x512, and 1280x512 are 15 kHz. I'm not sure on the 640x200, 320x200, 1280x200, 640x960, 640x256, 320x256, and 1280x256 modes are. > >-- >Dave Haynie Commodore-Amiga (Amiga 3000) "The Crew That Never Rests" > {uunet|pyramid|rutgers}!cbmvax!daveh PLINK: hazy BIX: hazy > "This is my mistake. Let me make it good." -R.E.M. -- Darrell Grainger % Comspec Communications Inc., Toronto, Ontario, Canada darrell@comspec % Disclaimer: All opinions expressed are my own. (416) 617-1475 % (416) 633-5605 (416)785-3553