Dreamcast to PSP thread kicked me out

Discussion in 'All other topics' started by Blagnarok, Feb 10, 2008.

  1. Blagnarok

    Blagnarok Member

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    "I think it would be simple to port these if we came up with a good piece of software to convert the dreamcast files. Now I'm no expert, but I do know the DreamCast has the exact same button layout as PSP..."

    The thread told me to wait60 days to post this message, but I don't want to wait 2 months for someone to get on this.
     
  2. varnull

    varnull Guest

    Why do they want you to wait 60 days? Because there is no dreamcast emulator for the psp.. and probably never will be..

    The DC actually has far better graphics hardware than the psp, and TBH I don't think anybody can be bothered attempting it.

    Think about it.. The dreamcast is sort of half way between a ps1 and 2 in performance, whereas a psp is really a low performance version of a ps2 in a handheld package with some other stuff added on..They cut the graphics capability drastically for the smaller screen it seems. The dreamcast is out of it's possibility of emulation.

    http://forums.afterdawn.com/thread_view.cfm/450457

    dreamcast specs

    * CPU: Hitachi SH-4, 200MHz clock rate, 360 MIPS (millions of instructions per second), 1.4 GigaFLOPS (floating-point operations per second), 128-bit 3D calculations, 64-bit data bus, 800+ MBytes/second bus bandwidth
    * Graphics Core: NEC PowerVRSG, 3 million polygons/second peak rendering rate, Perspective-Correct Texture Mapping, Point, Bilinear, Trilinear and Anisotropic Mip-map filtering, Gouraud shading 32-bit z-buffer, Colored light sourcing, Full scene anti-aliasing
    Hardware-based Fog, Bump mapping, 24-bit color, Hardware-based texture compression, Shadow and Light volumes, Super sampling
    * Memory: 16 MB main RAM, 8 MB video RAM, 2 MB sound RAM
    * Resolution: 640x448.
    * Colors: 16.7 million
    * Sound: Yamaha Audio Core, 32-bit RISC CPU, DSP for real-time effects, 64 sound channels, ,Full 3D sound support, Hardware-based audio compression
    * Dreamcast Control Pad: Digital and analog directional controls, Dual analog triggers, Virtual Memory System data save unit
    * Expansion Options: Modem: 33.6kb per second transfer rate (56kb in U.S.) Upgradable
    * Operating System: Customized Microsoft Windows CE and Sega operating system
    * Media: GD-ROM (GigaByte Disk-ROM) Drive - Maximum speed 12X 1.2 GigaByte capacity
    * Console Dimensions: 7 7/16" X 7 11/16" X 3" , 190 mm (W) x 195 mm (H) x 78 mm (D)
    * Weight: 4.4 pounds, 2.0 kg
    * Release Date: November 20, 1998 (Japan), September 1999 (USA)

    psp specs

    CPU

    * Allegrex CPU
    o MIPS r4000 32-bit core 1-333mhz
    o 16kib I-Cache & D-Cache
    + 64-byte line length
    + 2-way set associative, LRU
    o No TLB
    o 7-stage pipeline
    o 32 32-bit registers
    o FPU (COP1)
    + 32-bit single precision
    + 32 32-bit registers
    + IEEE 754 compliant
    + Sqrt (28 cycles), div(28 cycles), most others 1 cycle
    o VFPU (COP2)
    + Vector FPU “Macromode only”
    + Designed for vector and matrix ops
    + 128 32-bit registers
    # Reconfigurable as scalar, vector or matrix
    # IEEE 754 Single precision float
    + Can also handle 32-bit int, 16-bit int, 8-bit int, half float
    + vmmul.z vd, vs, vt - 4×4 matrix/vector multiply, 22 cycles

    * Media Block CPU
    o MIPS r4000-based core
    o 2MB Embedded DRAM
    o VME - Virtual Mobile Engine
    + Reconfigurable processor to decode audio & video
    + ATRAC3plus & MP3 for music
    # ATRAC3plus & ADPCM for games but not MP3 due to licensing issues
    o AVC H.264 engine
    + MPEG-4 Hardware accelerator
    + Up to 720x480x30fps
    # Libraries support 480x272x29.97fps

    Bus

    * Main bus shared by CPU and Graphics Engine
    * CPU only has level-1 cache, recomend minimizing memory usage
    * Cache miss ~70 cycles
    * VRAM read ~44 cycles
    o contention with GE
    * Scratchpad read ~38 cycles

    Graphics

    * Graphics Engine (GE)
    o 2MB Embedded DRAM
    o Supports Lighting, skinning (8 weights), morphing, subdivision, pixel operations
    o Operates at bus speed (default 111mhz)
    o 3.5GB/s Bus bandwidth
    o 444 Mpixels/sec fill rate
    o 23 Mploys/sec T&L

    ###########################

    The dreamcast graphics capability looks on a quick scan over to be far superior to the psp.

    I'm not surprised they are disallowing this many many times asked question.. It's not really possible to port games either.. they would need completely re-coding from scratch to run on the different hardware.

    Buy a dreamcast or try one of the PC based emulators ;)
     
    Last edited by a moderator: Feb 10, 2008

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