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=== SVARCOM ===
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=== SVARCOM ===
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SvarCOM is the SvarDOS command line interpreter, known usually under the name
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SvarCOM is the SvarDOS command line interpreter, known usually under the name
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"COMMAND.COM". It is designed and maintained by Mateusz Viste, and distributed
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"COMMAND.COM". It is designed and maintained by Mateusz Viste, and distributed
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under the terms of the MIT license.
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under the terms of the MIT license.
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So far, it is an incomplete, experimental project. The goal would be to
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For the time being, it is an incomplete, experimental project. The goal would
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eventually make SvarCOM the default SvarDOS shell, replacing FreeCOM.
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is to eventually make SvarCOM the default SvarDOS shell, replacing FreeCOM.
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Why replacing FreeCOM (FreeDOS COMMAND.COM)?
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*** Why replacing FreeCOM, the FreeDOS COMMAND.COM? ***
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FreeCOM is a very good piece of software, but there are a few things that I
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FreeCOM is an impressive piece of software, but there are a few things that I
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do not like about it. SvarCOM is my attempt at addressing these things:
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do not like about it. SvarCOM is my attempt at addressing these things.
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- FreeCOM is not suitable for low-memory machines. It takes about 55K of
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- FreeCOM is not suitable for low-memory machines. It takes about 55K of
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conventional memory when XMS is unavailable. XMS being a 386+ thing, FreeCOM
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conventional memory when XMS is unavailable. XMS being a 386+ thing, FreeCOM
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is not a very good fit for pre-386 machines. There is the KSSF hack, but it
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is a poor fit for pre-386 machines. There is the KSSF hack, but it is a
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is a kludgy hack with many limitations.
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kludg with many limitations.
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SvarDOS will not rely on XMS, and will perform swapping that works on any
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SvarDOS will not rely on XMS, and will perform swapping that works on any
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machine (similar to what MS-DOS did).
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machine (similar to what MS-DOS did).
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- FreeCOM requires custom NLS files. While the vast majority of FreeDOS
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- FreeCOM requires custom NLS files. While the vast majority of FreeDOS
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programs use a single "standard" (CATS/Kitten), FreeCOM is using a different
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programs use a single "standard" (CATS/Kitten), FreeCOM is using a different
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approach with pre-compiled NLS strings, which make it necessary to
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approach with pre-compiled NLS strings, which makes it necessary to
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distribute as many binaries as there are supported languages. It also makes
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distribute as many binary blobs as there are supported languages. It also
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the translation process much more difficult.
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makes the translation process much more difficult.
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SvarDOS will use Kitten-style translations, like other applications.
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SvarDOS will use Kitten-style translations, like other applications.
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- FreeCOM is complex: multi-compiler support and many features. This makes the
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- FreeCOM is a complex beast: it aims for compatibility with multiple
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compilers and supports many features. This makes the code uneasy to follow
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code uneasy to follow and changes require careful testing on all supported
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and changes require careful testing on all supported compilers and all
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compilers.
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possible build variants.
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SvarDOS is meant to be simple. It is meant to be compiled with OpenWatcom
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SvarDOS is meant to be simple and universal. It is meant to be compiled with
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and nothing else. It also won't integrate features that can be implemented
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OpenWatcom and nothing else. It also won't integrate features that can be
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as third-party tools (typically: DOSKEY).
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implemented as third-party tools (typically: DOSKEY).
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