supervised by Hideki Sato, Sega's director and deputy general manager of research and development. According to the project manager Hideki Okamura, the project started over two years before the Saturn was showcased at the Tokyo Toy Show in June 1994. The name "Saturn" was initially only the codename during development. In 1993, Sega and the Japanese electronics company Hitachi formed a joint venture to develop a new CPU for the Saturn, which resulted in the creation of the "SuperH RISC Engine" (or SH-2) later that year. The Saturn was designed around a dual-SH2 configuration. According to Kazuhiro Hamada, Sega's section chief for Saturn development during the system's conception, "the SH-2 was chosen for reasons of cost and efficiency. The chip has a calculation system similar to a DSP [digital signal processor], but we realized that a single CPU would not be enough to calculate a 3D world." Although the Saturn's design was largely finished before the end of 1993, reports in early 1994 of the technical capabilities of Sony's upcoming PlayStation console prompted Sega to include another video display processor (VDP) to improve 2D performance and 3D texture mapping. Sega considered making CD-ROM-based and cartridge-only versions of the Saturn, but discarded the idea due to concerns over the lower quality and higher price of cartridge games. According to Sega of America president Tom Kalinske, Sega of America "fought against the architecture of Saturn for quite some time". Seeking an alternative graphics chip for the Saturn, Kalinske attempted to broker a deal with Silicon Graphics, but Sega of Japan rejected the proposal. Silicon Graphics subsequently collaborated with Nintendo on the Nintendo 64. Kalinske, Sony Electronic Publishing's Olaf Olafsson, and Sony America's Micky Schulhof had discussed development of a joint "Sega/Sony hardware system", which never came to fruition due to Sega's desire to create hardware that could accommodate both 2D and 3D visuals and Sony's competing notion of focusing on 3D technology. Publicly, Kalinske defended the Saturn's design: "Our people feel that they need the multiprocessing to be able to bring to the home what we're doing next year in the arcades." In 1993, Sega restructured its internal studios in preparation for the Saturn's launch. To ensure high-quality 3D games would be available early in the Saturn's life, and to create a more energetic working environment, developers from Sega's arcade division were asked to create console games. New teams, such as the