Renesas has released to market a prototype development platform optimised for the version of the Linux operating system (OS) aimed at CE (consumer electronics) products such as digital home appliances. The platform is compatible with the specifications proposed by the CE Linux Forum (CELF).
CELF ( http://tree.celinuxforum.org/</a>) was established in July 2003 with the aim of enhancing and promoting the Linux OS for use in CE products. Renesas has been an active participant in CELF and the prototype development platform is the first result of the company's activities. The platform comprises a Renesas Technology RTS7751R2D development board and a Linux OS compatible with CELF specifications. The board uses an SH7751R microprocessor, which incorporates a SuperH 32-bit RISC SH-4 CPU core. The SH7751R features an MMU (memory management unit), FPU (floating-point processing unit), PCI controller, and PCMCIA controller. An SM501 manufactured by Silicon Motion, is mounted on the development board and implements various functions in combination with the SH7751R, including video overlay display, alpha blending, ZV port video input, an LCD/CRT display controller, and a USB.
The CELF specification compatible Linux OS is based on Linux Source Tree code with patches developed for the SH-4 architecture by Lineo Solutions. The platform incorporates a realtime scheduler, enabling moving images to be displayed within 2 seconds after powering on, and user key input to be accepted within 4 seconds. Seven independent frame buffers and an AC97 interface sound playback function are also supported.
Renesas Technology says it will continue to work on software and hardware that is compatible with CELF specifications as an environment for the use of Linux in CE products and other digital home appliances. It will also promote further enhancement of a user environment compatible with next-generation Linux Kernel Ver. 2.6.
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