Service Manuals, User Guides, Schematic Diagrams or docs for : apple quadra.centris_660av

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       K Service Source




Centris 660AV/Quadra
              660AV
           K Service Source




                   Basics
Centris 660AV/Quadra 660AV
Basics                                                      Overview - 2


                                             Overview
                                             This manual includes
                                             complete repair procedures
                                             for the Centris 660AV and
                                             Quadra 660AV shown at left.




    Figure: Centris 660AV and Quadra 660AV
           K Service Source




           Specifications
Centris 660AV/Quadra 660AV
     Specifications                                                   Processors - 1


                      Processors

Processor             Motorola 68040
                      25 MHz
                      Built-in paged memory management unit (PMMU), floating point
                         unit (FPU), and 8K memory cache


Addressing            32-bit registers
                      32-bit address/data bus


Direct Memory         A Peripheral Subsystem Controller (PSC) provides direct
Access (DMA)             memory access (DMA) between the 68040 buses and
                         peripheral devices
     Specifications                                                   Processors - 2

Digital Signal        AT&T DSP3210 32-bit floating-point digital signal processor
Processor (DSP)       Supports real-time tasks such as speech recognition, audio
                        compression, and analog modem signal processing.
      Specifications                                                   Memory - 3


                       Memory

RAM                    8 MB (4 MB soldered DRAM plus 4 MB SIMM) standard,
                         expandable to 68 MB
                       72-pin SIMMs
                       70 ns access time


ROM                    1 MB soldered on logic board


PRAM                   256 bytes of parameter memory
     Specifications                                                     Memory - 4

VRAM                  1 MB (two banks of 512K VRAM soldered on board)


Clock/Calendar        Maximum pixel depths for graphics:
Calendar              

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