Here some info if someone do :
What is the resolution of the 3DO system?
A: The resolution displayed on screen is 640x480. However, the 3DO has an internal resolution of 320x240 or 320x480, with each pixel being either 24-bits or 16-bits. The 16-bit mode is almost always used for animations, while the 24-bit mode is used mostly for still pictures. There are no other resolutions available. The internal resolution is interpolated into an anti-aliased 640x480 pixel display. The interpolation can be turned on and off via software.
Can the 3DO do real 24-bit color?
A: The 3DO can do 16 bit graphics with CLUTs(Color Look Up Tables) drawn from 24 bits, or it can do true 24 bit graphics.
What does it mean when 3DO product literature says that the system can "animate 64 million pixels per second?"
A: The system is capable of animating up to 64 million 16-bit on-screen pixels per second. This is really 16 million internal 16-bit pixels that are then interpolated as they are displayed on the screen to 640 by 480 pixel resolution, quadrupling the number of pixels displayed on screen.
What are the detailed specs of the system?
A: According to information from an article about the 3DO in Popular Science, the 3DO has an interesting design. Instead of a straightforward single bus configuration, it seems to have a multiple bus configuration. This in theory allows multiple components to be operating simultaneously, with less bus contention problems than would be found in a standard single-bus design.
The heart of the system is two Graphics and animation :
· 32-bit 12.5Mhz RISC CPU (ARM60) made by Advanced RISC Machines (Roughly equivalent to a 25Mhz 68030)
· 640x480 pixel resolution at 16.7 million colors
· Two Accelerated Video Co-Processors with the following features:
o 25Mhz clock rate.
o Capable of producing 9-16 million REAL pixels per second (36-64 Mpix/sec interpolated), distorted, scaled, rotated and texture mapped.
o Able to map a rectangular bitmap onto any arbitrary 4-point polygon.
o Texturemap source bitmaps can be 1,2,4,6,8, or 16 bits per pixel and are RLE compressed for a maximum combination of both high resolution and small storage space.
o Supports transparency, translucency, and color-shading effects.
· Custom 16-bit Digital Signal Processor (DSP) with the following features:
o Specifically designed for mixing, manipulating, and synthesizing CD quality sound.
o 25Mhz clock rate.
o Pipelined CISC architecture.
o 16-bit register size.
o 17 separate 16-bit DMA channels to and from system memory.
o On chip instruction SRAM and register memory.
o 20-bit internal processing.
o Special filtering capable of creating effects such as 3D sound.
· Separate BUS for video refresh updates (VRAM is dual ported)
· Super Fast BUS Speed (50 Megabytes per second)
· Math Co-Processor custom designed by NTG for accelerating fixed-point matrix operations. (Note: This is *not* the ARM FPA)
· CD-ROM Drive with the following features:
o 320ms access time
o Doublespeed 300kbps Data Transfer
o 32kbyte ram buffer
· 2 megabytes of DRAM
· 1 megabyte of VRAM (also capable of holding/executing code and data)
· 1 megabyte of ROM
· 36 Separate DMA Channels for fast data processing and efficient bus usage
· 2 expansion ports:
o 1 High-speed 68 pin x 1 AV I/O port (for FMV cartridge)
o 1 High-speed 30 pin x 1 I/O expansion port
· 1 Control port, capable of daisy chaining together up to 8 peripherals
· Multitasking 32-bit Operating System
· 16-bit Stereo Sound
· 44.1KHz Sound Sampling Rate
· Fully Supports Dolby(tm) Surround Sound
· 32kb battery backed up SRAM
· Upgradable
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