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- Short: 72hz NTSC monitor driver WORKS!
- Author: Jess Sosnoski
- Uploader: starblaz@postoffice.ptd.net
- Type: hard/hack
-
- Long:
- This is a replacement for the standard 60hz NTSC monitor driver for kickstarts
- 3.x+. (it won't work on 2.x, but if I get requests for a 2.x one, I'll hack
- one up!)
- I modified the stock NTSC driver such that the modeid, totrows and totclks are
- set up for 72hz. I did this the old-fashioned C-64 style way...with a
- sector/file editor. (I dug out DekSid..hehe..)
- I tried doing this thru the tooltypes, and time and time again, the driver
- faithfully ignored them, so the only remaining option was to edit the driver
- itself.
-
- Requirements:
- An amiga with Kick3.x.
- A monitor that will either handle a 72hz refresh rate, or a monitor with
- a vertical hold. An Amiga 1080, or Commodore 2002 will work--I tested it
- on both. (Well, the monitors are virtually identical anywayz)
- I don't know if this requires ECS or above, if it works on OCS, email me.
- I don't know what It'll do to a TV.
-
- Results:
- Less flicker in interlace!
-
- Disclaimer:
- USE AT YOUR OWN RISK.
- I take NO responsibility whatsoever by the use/abuse of this hacked monitor.
- (if it makes your monitor blow up...tough!)
- Like the ITAL36 driver's docs say: You have been warned.
-
- Compatibility:
- Tested with a variety of applications and games.
- Most games open their own screens anywayz, thus cancelling out NT70.
- Megaball3, Poing3, Deluxe Galaga, Klondike, and several others all ran good,
- and appeared to be using the NT70 video mode.
- (in NTSC's place)
- Worked with several mandel-programs, SysInfo, AIBB (acted like it cancelled it out
- though), Imploder, All Workbench programs, Ordering, etc... etc...
-
- Caveats:
- NO VERTICAL OVERSCAN, YOU ARE NOW LIMITED TO 200 or 400 pixel high screens!
- (The cost of a higher refresh rate on ECS)
- The computer STILL thinks that this driver is the NTSC driver, so don't load
- the ntsc driver in at the same time or you'll either get stuck in NTSC or
- NT70.
- A64 won't run with this installed.
-
- WEIRD STUFF:
- When you edit your overscan prefs, the screen will be wrapped around one inch over
- the left, and continue over on the right. Just ignore this!
- When I ran Sysinfo on my A600 from hell, I got a MOST INTERESTING speed difference
- (or so sez Sysinfo...)
- Normally I'm running at 1.27 the speed of a stock A600.
- (I have a fastram card, making my machine run at an A2000's speed)
- (gee whiz, boy, I REALLY noticed that whole 27%...)
- Well, now, I'm running at _1.57_ above A600 speed, and Sysinfo sez my
- CPU clockrate is 8.08 Mhz, instead of 7.16.
- (anybody with explanations, don't hesitate to email me)
- I can't tell if the speedup is real or not, because my machine's slow to start
- with, and an extra 30% speedup is hard to tell on an 8 color workbench in
- interlace.
-
- Contacting the hacker....
- (Well, I'm NOT the author of the monitor, just the hacker of the monitor)
-
- Snail-Mail:
- Jess Sosnoski
- 651 Hillside Drive
- Mount Carmel, PA 17851-2463
- USA
-
- Phone: (yea..right)
- (717) 339-4796
-
- Email:
- starblaz@postoffice.ptd.net
-
- Web Page:
- COMING SOON
-
- *NOTE* if you're using UNd64, addfreq, or tinypalntsc, send mail for that
- to the above address instead of the one listed in the docs for those files.
- Oh, yea, if you've read Kick31onA600, send to above address too.
-
- Enjoy...Knock Yourselves out!
-