emao@wiley.uucp (Edward Mao) (12/13/89)
Is there a way to center the output of the composite video out on an Amiga 1000? I know you can use the preference tool on Workbench to do it but I need to do it on disks which boot up directly. Thanks, Edward
adam@cbmcats.UUCP (Adam Keith Levin) (12/14/89)
In article <8218@wiley.UUCP> emao@wiley.uucp.UUCP (Edward Mao) writes: > >Is there a way to center the output of the composite video out on an >Amiga 1000? I know you can use the preference tool on Workbench to do >it but I need to do it on disks which boot up directly. > >Thanks, >Edward Yes, but it is something of a hassle. This method requires that you update a copy of a Kickstart disk with the new View offsets. If you then use this Kickstart disk when booting your A1000, most boot-load programs will use the offset information to center the screen. Note that some programs (most notably games) do not bother with the information in "preferences". Here are the steps required: 1. Figure out what preferences information is different: Go into Preferences and select "Reset All". Save this setting. Rename devs:system-configuration to devs:s-c.default. Go into Preferences and position the screen as you prefer it. Save this setting. Use "Type OPT H" (or some hex file compare program) to look at the hex versions of the two files. They will differ in the screen position information. Note the offset of these bytes from the printer driver name ("generic"). 2. Find the preferences information on the Kickstart disk: Using a disk utility with ASCII search capability, find the printer name on the kickstart disk (again, "generic"). At the same offset from the driver name, find the bytes containing the default positioning information. 3. Update the information: Change these bytes to your preferred values. Write the changes to the Kickstart disk. There is a program in the Public Domain (on a Fish disk, I believe) to recompute the Kickstart checksum. Use it to make this new Kickstart disk usable. 4. Power down your A1000, power it back up and boot with the new Kickstart. -- Adam Keith Levin -- CATS Commodore Applications and Technical Support 1200 Wilson Drive / West Chester, PA 19380 (215) 431-9180 BIX: aklevin UUCP: ...{amiga|rutgers|uunet}!cbmvax!cbmcats!adam
baer@qiclab.UUCP (Ken Baer) (12/16/89)
In article <123@cbmcats.UUCP> adam@cbmcats.UUCP (Adam Keith Levin) writes: |In article <8218@wiley.UUCP> emao@wiley.uucp.UUCP (Edward Mao) writes: || ||Is there a way to center the output of the composite video out on an ||Amiga 1000? I know you can use the preference tool on Workbench to do ||it but I need to do it on disks which boot up directly. || ||Thanks, ||Edward | |Yes, but it is something of a hassle. | |This method requires that you update a copy of a Kickstart |disk with the new View offsets. | << complicated process deleted >> |-- |Adam Keith Levin -- CATS Commodore Applications and Technical Support |1200 Wilson Drive / West Chester, PA 19380 (215) 431-9180 |BIX: aklevin UUCP: ...{amiga|rutgers|uunet}!cbmvax!cbmcats!adam << HI ADAM!! >> Depending on what you need the screen offset for, there are a few other (simpler) alternatives. My experiences are with video application that need overscan in the video out. Sometimes the image is shifted from what you see on the RGB display. This happens when I use the CMI-VI encoder. And I have to shift the image to compensate. Mike Berro (of MicroIllusions) has a utility that will shift the entire Amiga display (all screens) using hot keys. I believe this is part of his VTOT (Video Tools On Tap) shareware utility. This acts like using Preferences. I don't know if you can call it from a script, or whether you must make the adjustment manually. If you are shifting the image of an IFF or animation, you can use the latest version of Display (V3.31, a PD animation player from Hash Enterprises). The new version will shift the screen offset when you press the ',' '.' '[' and ']' keys. Display is available on PeopleLink, and will be on Genie as soon as I have time to upload it. Hope this helps. -- // -Ken Baer. Programmer/Animator, Hash Enterprises. \X/ Usenet: baer@qiclab.UUCP or PLink: KEN BAER "I want to be an ..... ARCH VILLIAN!!!" -- Petey Pate.
ragg0270@uxa.cso.uiuc.edu (12/16/89)
Can't you just copy the system-configuration file onto the boot floppy's s directory? (Unless its a game or copy protected original disk).