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Panasonic M2
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==Technical specifications== These refer to the cancelled video game console. *[[Central processing unit]] β Dual 66 MHz [[PowerPC 600#PowerPC 602|PowerPC 602]]<ref name=EGM71/><ref name=NGen30/> **Implements the [[32-bit computing|32-bit]] [[PowerPC]] [[Reduced instruction set computer|RISC]] instruction set architecture **[[PowerPC]] CPU designed for [[consumer electronics]] applications **1.2 [[watt]]s power usage each **32-bit [[Processor register|general purpose register]]s and [[Arithmetic logic unit|ALU]] **33 MHz 64-bit multiplexed address and data bus **4 [[KiB]] data and instruction [[CPU cache|caches]] (Level 1). No Level 2 cache **1 integer unit, 1 [[floating point unit]], no branch processing unit, 1 load/store unit **[[SPECint]]92 rating of 40 each, approximately 70 [[Instructions per second|MIPS]] each. **1 million [[transistor]]s manufactured on a 0.50 [[micrometre]] [[CMOS]] process *Custom [[Application-specific integrated circuit|ASIC]]s cohabiting on the motherboard<ref name=NGen6>{{cite magazine|title=M2 |magazine=[[Next Generation (magazine)|Next Generation]]|issue=6|publisher=[[Imagine Media]]|date=June 1995|pages=36β40}}</ref> **BDA: ***Memory control, system control, and video/graphic control<ref name=NGen26>{{cite magazine|title=World Exclusive: M2 Specs Revealed|magazine=[[Next Generation (magazine)|Next Generation]] |issue=26|publisher=[[Imagine Media]]|date=February 1997|pages=16β17}}</ref> ***Full triangle renderer including setup engine, [[MPEG-1]] decoder hardware, DSP for audio and various kinds of [[direct memory access|DMA]] control and port access<ref name="NGen26"/> ***Random access of [[frame buffer]] and [[Z-buffering|z-buffer]] (actually [[w-buffer]]) possible at the same time<ref name=NGen26/> **CDE: ***Power bus connected to BDA and the two CPUs<ref name=NGen26/> ***"bio-bus" used as a low-speed bus for peripheral hardware<ref name=NGen26/> *Renderer capabilities: **1 million un-textured [[triangle]]s/s geometry rate<ref name=NGen6/> **100 million [[pixel]]s/s fill rate<ref name="GPro82">{{cite magazine|title=3DO's M2 Technology|magazine=[[GamePro]]|issue=82|publisher=[[International Data Group|IDG]]|date=July 1995|page=16}}</ref> **reportedly 700,000 textured polygons/second without gouraud shading or additional effects **reportedly 500,000 textured polygons/second with gouraud shading, lighting and effects<ref name=NGen26/> **shading: [[flat shading]] and [[gouraud shading]] **[[texture mapping]] **decal, modulation blending, tiling (16k/128k texture buffer built-in)<ref name=NGen26/> **hardware [[Z-buffering|z-buffer]] ([[16-bit computing|16-bit]]) (actually a block floating point with multiple (4) range [[w-buffer]]) **object-based [[full-scene anti-aliasing]] **[[alpha channel]] ([[4-bit computing|4-bit]] or 7-bit)<ref name=NGen26/> **256x224 to 640x480 resolution at [[24-bit color]]<ref name="EGM71"/> *Sound hardware β 16-bit 32-channel [[digital signal processor|DSP]] at 66 MHz (within BDA chip)<ref name="NGen12"/> *Media β Quad-speed [[CD-ROM]] drive (600 [[kilobyte|KB]]/s)<ref name="EGM87"/> *[[Random-access memory|RAM]] β Unified memory subsystem with 8 [[Mebibyte|MiB]] **[[64-bit computing|64-bit]] bus resulting in peak 528 MB/s bandwidth<ref name="GPro82"/> **Average access 400 MB/s<ref name=NGen30>{{cite magazine |title=Matsushita M2: Hit or Myth? |magazine=[[Next Generation (magazine)|Next Generation]] |issue=30|publisher=[[Imagine Media]] |date=June 1997|pages=62β63 |url=https://archive.org/stream/NextGeneration30Jun1997/Next_Generation_30_Jun_1997#page/n63}}</ref> *[[Full Motion Video]] β [[MPEG-1]]<ref name="EGM71"/> *Writable Storage β [[Memory card]]s from 128 KiB to 32 MiB *Expansion Capabilities β 1 [[PC card|PCMCIA]] port (potentially used for [[modem]]s, [[Ethernet NIC]]s, etc.)<ref name=NGen26/>
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