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发表于 2015-2-18 13:04 · 澳大利亚
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本帖最后由 harry2007 于 2015-2-18 13:14 编辑
只有一块68000处理器,内存只有可怜的64K, 显存 84K,不过频率比世嘉MD的高(世嘉是7.6MHZ, neogeo是12MHZ),
不过NEOGEO的游戏容量可比MD大多了(330Mbit, MD只有40Mbit),这基板一直用到2000年.
Specifications
The arcade game cartridges measure 7.5 inches (190 mm) by 5.34 inches (136 mm)
CPU[edit]
Main CPU processor: Motorola 68000 (often a second sourced version, usually by Toshiba or Hitachi) @ 12 MHz (16/32-bit instructions @ 1.75 MIPS[11])
CPU co-processor: Zilog Z80 @ 4 MHz (also used as audio controller) (8/16-bit instructions @ 0.58 MIPS[11])
RAM[edit]
RAM: 214 KB SRAM[12]
Main 68000 RAM: 64 KB (32 KB SRAM ×2)
Video RAM: 84 KB SRAM
Main VRAM: 64 KB (32 KB SRAM ×2)
Palette memory: 16 KB (8 KB SRAM ×2)
Fast video sprite RAM: 4 KB (2 KB SRAM ×2)
Z80 sound RAM: 2 KB SRAM
Battery-backup save NVRAM: 64 KB SRAM
On-board ROM: 512 KB
Zoom look-up table: 128 KB
Fix layer graphics: 128 KB
Z80 sound: 128 KB
68000 BIOS: 128 KB |
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