Docent wrote a decompressor the the LZ4 compression algorithm, which can be used on any Zilog Z80 CPU. The focus of the LZ4 compression algorithm is a fast decompression speed and a small decompression routine. The size of Docents version of the decompression routine is 219 bytes (raw decompression routine under 110 bytes) and it supports the legacy and the newest LZ4 format (except for framing).
You can download the latest version of the decompression code here or at the end of this news.
decompresses files packed by lz4 command line packer and raw lz4 compressed data
supports legacy and the newest lz4 file format (except framing)
fully relocatable code
total size of 219 bytes size with raw decompression routine below 110 bytes
cpc firmware friendly (no alternate register set used)
ROM friendly – no self modifying code or additional memory required
simple interface – only start of file in memory and target memory destination required
This archive features the LZ4 decompression routine by Docent, which can decompress files which were compressed with the LZ4 compressor by Yann Collet. Its advantage is the small decompression routine size and high decompression speed.
Some time ago the Mojon Twins released their Amstrad CPC port of their game Sir Ababol 2 (you can download Sir Ababol here). In Sir Ababol 2 you have to guide the main character, Sir Ababol, to the top of the six towers of Freezia. Of course you have to fight against several enemies which you will meet on your way.
You can download Sir Ababol 2 from the Mojon Twins homepage or at the end of this posting. The source code for the game can be found there, too.
Kevin Thacker released new version of his cross-platform development tools CPCXfs and 2CDT. With CPCXfs you can transfer files between DSK images, which can be used in an emulator or to transfer files to the real Amstrad CPC, and your local file system. 2CDT is a similar tool, which is used to transfer files from your local file system intro a CDT cassette image. This can also be used in an emulator or transfered to the real machine. Both utilities are widely used for cross-platform development, e.g. with CPCtelera, to prepare your release.
You can download CPCXfs and 2CDT from the CPCWiki forums or at the end of this news. The source code is included in the ZIP archives of the release.
Fixed errors shown with static analysis
CPCXfs will correctly set ERRORLEVEL command-line variable under more error conditions
Some other smaller bugfixes
You can define the sync byte for headerless
Command-line processing under windows and linux has been re-written. It is a lot better.
If you uses the mode with 2 blocks and you gave it a file which was shorter than a block it would not write it correctly. Now fixed.
When using pure tone it didn’t write the length of the ‘1’ pulse correctly
Some issues seen when running static analysis over the code.
Rhino released a new graphics tool for the Amstrad CPC called Perfect Pix. Perfect Pix supports 3 different extended graphics modes with extended colours and resolutions:
Up to 384×272 pixels and 16 freely selectable colors from a palette of 27.
Up to 192×272 pixels and 136 colors from a palette of 378.
Up to 384×272 pixels and 307 colors, divided into color 0 + up to 34 palettes of 9 colors per line.
Perfect Pix comes with an awesome documentation (english and spanish) and of course with the source code to use the pictures in your own production. If you need graphics for your next project, be sure to have a look at it. You can download the latest version from Pouet.net and the CPCWiki forums.
Added message if upper memory is full by too many ROMs.
Bug fixed in the converter exporting overscan screens.
More upper memory free for greater ROMs compatibility.
Improved controls in Paint tool by adding CONTROL + keys to move the pointer to scroll the zoom window (similar to OCP Art Studio).
Added warning message in the converter when source image exceeds the image size limits managed with the Paint tool.
Additional upper memory free for greater ROMs compatibility.
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