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- Path: sparky!uunet!cbmvax!spence
- From: spence@cbmvax.commodore.com (Spencer Shanson)
- Newsgroups: comp.sys.amiga.hardware
- Subject: Super72 images
- Message-ID: <38069@cbmvax.commodore.com>
- Date: 19 Dec 92 04:54:04 GMT
- Organization: Commodore, West Chester, PA
- Lines: 47
-
- In article <1992Dec13.223905.10671@crash> rtillery@crash.cts.com (Rick Tillery) writes:
- >I've got lots of GIFs and JPEGs in 800x600 (or that will fit on that size
- >screen but not on 640x480) and there seems to be no view that will support
- >that screen type. I've converted them to 256 color or HAM8 IFFs and tried
- >Multiview, and tried to use ViewTek 1.3 with no success. All I get is a
- >"normal" screen I have to scroll around in. Even ADPro won't open a screen
- >of that type. What gives?
-
- I'm afraid this a case of having to wait for the software to play catchup with
- the features of 3.0 and AA. Hopefully, more new software will start using the
- 2.1 asl screenmode.requester (an/or the 3.0 graphics BestModeID() function). In
- the meanwhilst, you will need to do the same as me, which is to zap the file
- itself. If you use 'newzap' (or an equivalent), look in the IFF file for the
- 'CAMG' chunk. This is followed by 4 bytes, which shows the size of the CAMG
- chunk (should be 4), followed by 4 bytes which are the graphics ModeID of the
- image. Use newzap to change the ModeID to 0x89024 for Super72, or 0x89824 for
- Super72 HAM.
-
- For example, if the hex-dump of your HAM image looks something like:
-
- 0000: 464F524D 00056526 494C424D 424D4844 FORM..e&ILBMBMHD
- 0010: 00000014 02E00240 00000000 08000100 ......@........
- 0020: 00000A0B 02E00250 414E4E4F 00000048 ......PANNO...H
- 0030: 24564552 3A205772 69747465 6E206279 $VER: Written by
- 0040: 20415344 47277320 41727420 44657061 ASDG's Art Depa
- 0050: 72746D65 6E742050 726F6665 7373696F rtment Professio
- 0060: 6E616C20 49464633 2E302E30 20283037 nal IFF3.0.0 (07
- 0070: 2E33302E 39322900 44504920 00000004 .30.92).DPI ....
- 0080: 0110012C 43414D47 00000004 00000804 ...,CAMG........
- ~~~~~~~~
- 0090: 434D4150 000000C0 040C020F 1C080F1D CMAP...........
- 00A0: 1A1B2915 0A1D2D29 2C141A2C 2C29341D ..)...-),..,,)4.
- 00B0: 152E3E1F 323B2637 3F3A3F22 1737572C ..>.2;&7?:?".7W,
-
- then change the marked bytes from 00000804 to 00089824.
-
- >
- >Rick Tillery
-
-
- --
- ---------------------------------------------------------------------------
- Spencer Shanson - Amiga Software Engineer | email: spence@commodore.COM
- | or uunet!cbmvax!spence
- All opinions expressed are my own, and do not | Bix: sshanson
- (necessarily) represent those of Commodore. | Weebles Wobble, but
- | they don't fall down.
-