Spectrum 512 formats - Revision history

Dexvertbot: /* Sample files */

2023-12-28T04:40:32Z

‎Sample files

2020-08-14T16:44:41Z

‎Sample files

2020-07-26T20:58:35Z

‎Sample files

2020-05-26T16:54:48Z

‎Software

2020-05-26T16:54:35Z

‎Sample files

2020-05-26T16:53:47Z

‎Sample files

2017-05-18T18:59:04Z

‎Format details

2017-02-12T20:04:55Z

‎Resources

2017-01-18T18:46:57Z

2017-01-18T18:05:24Z

@@ Line 40: / Line 40: @@
 * http://cd.textfiles.com/geminiatari/FILES/GRAPHICS/SPECPICS/ - SPC, SPS
 * http://cd.textfiles.com/806atari/301-400/315/ - SPS
-* https://telparia.com/fileFormatSamples/image/spectrum512C/
+* {{DexvertSamples|image/spectrum512C}}
-* https://telparia.com/fileFormatSamples/image/spectrum512U/
+* {{DexvertSamples|image/spectrum512U}}
-* https://telparia.com/fileFormatSamples/image/spectrum512S/
+* {{DexvertSamples|image/spectrum512S}}
 == Resources ==

@@ Line 42: / Line 42: @@
 * https://telparia.com/fileFormatSamples/image/spectrum512C/
 * https://telparia.com/fileFormatSamples/image/spectrum512U/
 == Resources ==

@@ Line 40: / Line 40: @@
 * http://cd.textfiles.com/geminiatari/FILES/GRAPHICS/SPECPICS/ - SPC, SPS
 * http://cd.textfiles.com/806atari/301-400/315/ - SPS
-* https://telparia.com/fileFormatSamples/image/ → *.spc, *.spu
+* https://telparia.com/fileFormatSamples/image/spectrum512C/
 == Resources ==

@@ Line 33: / Line 33: @@
 * [[Netpbm]]: ppmtospu (v10.58+), sputoppm, spctoppm
 * [[XnView]]
 == Sample files ==

@@ Line 38: / Line 38: @@
 * http://cd.textfiles.com/geminiatari/FILES/GRAPHICS/SPECPICS/ - SPC, SPS
 * http://cd.textfiles.com/806atari/301-400/315/ - SPS
-* https://telparia.com/fileFormatSamples/image/abydos/ → *.spc, *.spu
+* https://telparia.com/fileFormatSamples/image/ → *.spc, *.spu
 == Resources ==

@@ Line 13: / Line 13: @@
 * Spectrum 512 Smooshed (.sps; signature="<code>SP</code>")
-There is also said to be a backward-compatible "Enhanced" variant of the ''Uncompressed'' format, in which the palette colors have a slightly different format.
+There is also said to be a backward-compatible "Enhanced" variant of the ''Uncompressed'' format, in which the palette colors have a [[Atari ST color palette#Spectrum 512 Enhanced palettes|slightly different format]].
 There is no easy way to distinguish ''Compressed'' and ''Smooshed'' formats, other than by the filename extension.

@@ Line 40: / Line 40: @@
 == Resources ==
-* [http://www.atari-wiki.com/?title=ST_Picture_Formats ST Picture Formats]
+* {{AtariForumWiki|ST_Picture_Formats|AtariForumWiki: ST_Picture_Formats}}
-** [http://www.atari-wiki.com/index.php/Spectrum_512_file_format Spectrum 512]
+** {{AtariForumWiki|Spectrum_512_file_format|Spectrum 512}}
-*** [http://www.atari-wiki.com/index.php/Spectrum_512_Enhanced_file_format Spectrum 512 Enhanced]
+*** {{AtariForumWiki|Spectrum_512_Enhanced_file_format|Spectrum 512 Enhanced}}
-** [http://www.atari-wiki.com/index.php/Spectrum_512_Compressed_file_format Spectrum 512 Compressed]
+** {{AtariForumWiki|Spectrum_512_Compressed_file_format|Spectrum 512 Compressed}}
-** [http://www.atari-wiki.com/index.php/Spectrum_512_Smooshed_file_format Spectrum 512 Smooshed]
+** {{AtariForumWiki|Spectrum_512_Smooshed_file_format|Spectrum 512 Smooshed}}
 * [http://wiki.multimedia.cx/index.php?title=Spectrum_512 MultimediaWiki article]

@@ Line 5: / Line 5: @@
 |extensions={{ext|spu}}, {{ext|spc}}, {{ext|sps}}
 }}
-The '''Spectrum 512 formats''' are a group of raster image file formats associated with the ''Spectrum 512'' paint program for Atari ST.
+The '''Spectrum 512 formats''' are a family of raster image file formats associated with the ''Spectrum 512'' paint program for Atari ST.
-== Format ==
+== Format details ==
 There are three main file formats:
 * Spectrum 512 Uncompressed (.spu)
 * Spectrum 512 Compressed (.spc; signature="<code>SP</code>")
 * Spectrum 512 Smooshed (.sps; signature="<code>SP</code>")
 The image dimensions are always 320×199 pixels, though some decoders interpret them as being 320×200, with an all-black top row.

@@ Line 17: / Line 17: @@
 There are 4 bits of image data per pixel, which are interpreted using a complicated system of color palettes.
-For uncompressed (.spu) files, the first 160 bytes of the file should be set to zero. Following that are 31840 bytes of image data (160 for each row). Following that are 19104 bytes of palette data. The total file size is 51104 bytes.
+For uncompressed (.spu) files, the first 160 bytes are usually set to zero (except in the "Enhanced" variant). Following that are 31840 bytes of image data (160 for each row). Following that are 19104 bytes of palette data. The total file size is 51104 bytes.
 == Related formats ==
@@ Line 31: / Line 31: @@
 == Sample files ==
-* http://samples.libav.org/image-samples/atarist/spectrum512/
+* http://samples.libav.org/image-samples/atarist/spectrum512/ - SPU, SPC
-* http://cd.textfiles.com/geminiatari/FILES/GRAPHICS/SPECPICS/
+* http://cd.textfiles.com/geminiatari/FILES/GRAPHICS/SPECPICS/ - SPC, SPS
 == Resources ==