There is also an inactive emulator for the unrelated earlier Gaelco 3D system, and MAME supports that one. Not their early 'Gaelco 3D' board from 1996-1998. PowerVR 2-based board from Spanish company. The CPU was a 2× Hitachi SH-4 CPU at 200 MHz and the GPU was a 2× NEC-VideoLogic PowerVR 2 (PVR2DC/CLX2). The Sega Hikaru had a specific Motorola 68000 CPU just for networking. The CPU was 2× to 16× Hitachi SH-4 CPU at 200 MHz with the GPU being either 2× to 16× NEC-VideoLogic PowerVR 2 (PVR2DC/CLX2). The Sega NAOMI Multiboard had 112 to 869MB of RAM.
The Sega NAOMI had a Hitachi SH-4 CPU at 200 MHz with 56MB of RAM (568MB of RAM with GD-ROM) and a NEC-VideoLogic PowerVR2 (PVR2DC/CLX2). Sega Hikaru had its own Sega Custom 3D GPU composed of dual PowerVR 2 GPU chips. Many of them also utilized their own Yamaha audio chipset. The exception was the Cave CV1000 which ran on a Hitachi SH-3 CPU and its GPU was the Altera Cyclone EP1C12 FPGA. Next, all but two of these various boards shared their own form of the PowerVR 2 graphics processor with some differences in specifications (eg. The NAOMI board and almost all of its variants were united in common by running on mostly the SH-4 32-bit RISC CPU. The Sega Chihiro, or possibly even the Sega Lindbergh, could also be seen as successors. The NAOMI was succeeded by the Sega Hikaru and Sega NAOMI 2 boards, though having out-lasted the NAOMI 2, Hikaru and Sega System SP. It was designed as a successor to Sega Model 3 hardware, using a similar architecture to the Sega Dreamcast. The NAOMI ( New Arcade Operation Machine Idea) is an arcade system released by Sega in 1998.
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