apple quadra 840av free download

File name quadra_840av.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 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 Processor - 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 standard (one 8 MB SIMM), expandable to 128 MB 72-pin SIMMs Requires CAS-before-RAS 60 ns access time ROM 2 MB soldered on logic board PRAM 256 bytes of parameter memory Specifications Memory - 4 VRAM 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 Clock/Calendar Apple custom chip with long-life lithium battery Specifications Disk Storage - 5 Disk Storage Floppy Drive Internal, 1.4 MB Apple SuperDrive Hard Drive Internal, 3.5 in. hard drive (230, 500, 1000 MB) optional CD-ROM Drive Internal, CD-300 mechanism optional Specifications I/O Interfaces - 6 I/O Interf