The T-Engine Forum has released version 1.02.01 of the open-source T-Kernel. The change log is only in Japanese and is available only if you registered to download the kernel from the Japanese site.
According to the table on the downloads page, the Version 1.02.01 source includes code for SH7727, SH7751r, SH7760, ARM926, ARM920, ARM720, VR5500, VR4131 and M32104. Further, there is a different download of Version 1.01.00 of the T-Kernel for the Micro T-Engine/ SH7145 that you can download from the site – this requires a separate registration from a Japanese-only (so far) page. The English download site has implementation notes only for the SH7727 and SH7751R processors.
The Japanese download site includes implementation notes for the above processors, the source code for the kernel and also the change log for Release 1.02.01.
From both pages, you can download the T-Kernel Specification v1.00.00 in English or in Japanese.
- T-Kernel Download Site – https://www.t-engine.org/tk-download/tkernel/