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发表于 2017-9-11 12:33 · 江苏
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xpressure101 发表于 2017-9-11 11:51
ss的2d优势太大,内存比ps高了30%,即使不用加速卡,游戏加载速度已经比ps快了很多了, 已经在众多游戏中 ...
SS内存2MB,显存1.5MB
PS内存2MB,显存1MB
3.5/3-1=16.7%,何来多30%?况且因为SS双VDP的设置,显存是有被浪费的情况存在的。
请不要再被国内那些转手N回的错误资料误导了。我以下引用的都是权威资料。
http://cyberiapc.com/vgg/sega_saturn.htmhttp://antime.kapsi.fi/sega/docs.html
SS规格:
CPU: Two 32-bit SH-2 (28.6MHz) RISC processors
RAM: 2MB, Video RAM: 1.5MB
Colors: 16.7 million
Polygons: 200,000 texture-mapped, 500,000 flat-shaded per second
Game Media: CD-ROM
Resolution: 704x480
Sound: 32-channel PCM, 8-channel FM stereo
http://problemkaputt.de/psx-spx.htm
PS规格:
Memory Map
KUSEG KSEG0 KSEG1
00000000h 80000000h A0000000h 2048K Main RAM (first 64K reserved for BIOS)
1F000000h 9F000000h BF000000h 8192K Expansion Region 1 (ROM/RAM)
1F800000h 9F800000h -- 1K Scratchpad (D-Cache used as Fast RAM)
1F801000h 9F801000h BF801000h 8K I/O Ports
1F802000h 9F802000h BF802000h 8K Expansion Region 2 (I/O Ports)
1FA00000h 9FA00000h BFA00000h 2048K Expansion Region 3 (whatever purpose)
1FC00000h 9FC00000h BFC00000h 512K BIOS ROM (Kernel) (4096K max)
FFFE0000h (KSEG2) 0.5K I/O Ports (Cache Control)
Additionally, there are a number of memory mirrors.
Additional Memory (not mapped to the CPU bus)
1024K VRAM (Framebuffers, Textures, Palettes) (with 2KB Texture Cache)
512K Sound RAM (Capture Buffers, ADPCM Data, Reverb Workspace)
0.5K CDROM controller RAM (see CDROM Test commands)
16.5K CDROM controller ROM (Firmware and Bootstrap for MC68HC05 cpu)
32K CDROM Buffer (IC303) (32Kx8) (BUG: only two sectors accessible?)
128K External Memory Card(s) (EEPROMs)
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