| 1,2 → 1,17 |
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| \chapter{Project} |
| \label{project} |
| \label{project} |
| |
| The HelenOS project was formed in late October 2004, when the six developers grouped and decided to |
| adopt previous work of {\JJ} on the SPARTAN kernel\footnote{The SPARTAN kernel has been developed |
| by {\JJ} since 2001.} as a foundation for their new operating system. |
| |
| The team had then worked on a specification\cite{helenos-spec} until March 8, 2005. The specification |
| was based on \MD's draft and incorporated many suggestions from other members of the team. |
| The biggest part of the discussion was concerned about how many and what processor architectures we will support. |
| At that time, the SPARTAN kernel supported ia32 and mips32 to the extent that kernel threads could be scheduled. |
| The ia32 port could do some very basic virtual memory operations and was capable of SMP |
| service. Moreover, the mips32 port ran only in the msim simulator. We realized the need to support at least |
| one 64-bit architecture and have long discussed whether it should be amd64 or ia64. We also considered ppc64. |
| At the end, we decided to declare support for three new architectures and five architectures in total, including |
| both amd64 and ia64 and also ppc32. |
| |