Apple Quadra 840 AV free download

File name QUADRA_840_AV.pdf

K Service Source Macintosh Quadra 840AV K Service Source Specifications Macintosh Quadra 840AV Specifications Processor - 1 Processor CPU Motorola 68040 microprocessor 40 MHz Built-in paged memory management unit (PMMU), floating-point unit (FPU), and 8K memory cache 32-bit registers 32-bit address/data bus A Peripheral Subsystem Controller (PSC) provides direct memory access (DMA) between the 68040 buses and peripheral devices. Addressing Direct Memory Access (DMA) Specifications Processor - 2 AT&T DSP3210 32-bit floating-point digital signal processor Supports real-time tasks such as speech recognition, audio compression, and analog modem signal processing. Digital Signal Processor (DSP) Specifications Memory - 3 Memory RAM 8 MB standard (one 8 MB SIMM), expandable to 128 MB 72-pin SIMMs Requires CAS-before-RAS 60 ns access time 2 MB soldered on logic board 256 bytes of parameter memory ROM PRAM Specifications Memory - 4 1 MB standard, expandable to 2 MB (80 ns or faster 256K VRAM SIMMs) Maximum pixel depths for 1 MB / 2 MB VRAM: 12-inch color (512 x 384) - 16 / 16 bits per pixel 12-inch monochrome (640 x 480) - 16 / 16 bits per pixel 13-inch color (640 x 480) - 8 / 16 bits per pixel 15-inch portrait (640 x 870) - 4 / 8 bits per pixel 16-inch color (832 x 624) - 8 / 16 bits per pixel 19-inch color (1024 x 768) - 4 / 8 bits per pixel 21-inch monochrome (1152 x 870) - 4 / 8 bits per pixel 21-inch color (1152 x 870) - 4 / 8 bits per pixel VGA (640 x 480) - 8 / 16 bits per pixel SVGA (800 x 600) - 8 / 16 bits per pixel Apple custom chip with long-life lithium battery VRAM Clock/Calendar Specifications Disk Storage - 5 Disk Storage Floppy Drive Hard Drive CD-ROM Drive Internal, 1.4 MB Apple SuperDrive Internal, 3.5 in. hard drive (230, 500, 1000 MB) optional Internal, CD-300 mechanism optional Specifications I/O Interfaces - 6 I/O Interfaces Serial Two RS-232/RS-422 ports (modem port is an Apple highperformance serial port) Printer port: mini DIN-8 connector Modem port: mini DIN-9 connector (also supports mini DIN-8 connector) 230.4 Kbaud maximum 0.920 mbit/sec. if external clock source is provided (modem interface only) Asynchronous and synchronous communications supported up to 9600 baud Specifications I/O Interfaces - 7 High-performance serial port Supports connection to analog, PBX, ISDN, facsimile (fax), and data telephone lines Provides full-duplex telephone I/O at up to 14.4 Kbps Supports AppleTalk and V.22, V.22bis, V.29, and V.32 modem protocols Supports Apple HiPPort protocols One monitor port; DB-15 connector Supports Apple monitors (up to 16-bits), VGA monitors, and NTSC and PAL video standards One S-video output port; one S-video input port; mini DIN-4 connectors Supports input/output in NTSC, PAL, and SECAM formats GeoPort (Modem Port) Video S-Video Input & Output Specifications I/O Interfaces - 8 One composite video output port; one composite video input port; RCA phono plug connectors Supports input/ou