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File name macintosh_ii.iix.iifx.pdf

K Service Source Macintosh II/IIx/IIfx K Service Source Basics Macintosh II/IIx/IIfx Basics Overview - 1 Overview This manual includes complete repair procedures for the Macintosh II, Macintosh IIx, and Macintosh IIfx. Figure: Macintosh II, IIx, IIfx K Service Source Specifications Macintosh II/IIx/IIfx Specifications Processor - 1 Processor CPU Macintosh II Motorola 68020 microprocessor 15.6772 MHz Optional built-in paged memory management unit (PMMU) Macintosh IIx Motorola 68030 microprocessor 15.6772 MHz Built-in paged memory management unit (PMMU) Macintosh IIfx Motorola 68030 microprocessor 40 MHz Built-in paged memory management unit (PMMU) Specifications Processor - 2 Coprocessor Macintosh II Motorola 68881 math coprocessor Macintosh IIx/IIfx Motorola 68882 math coprocessor Addressing 32-bit registers 32-bit address bus 32-bit data bus Specifications Memory - 3 Memory RAM Macintosh II/IIx 1 MB, expandable to 8 MB Macintosh IIfx 4 MB standard, expandable to 8 MB ROM Macintosh II/IIx 256K Macintosh IIfx 512K Specifications Disk Storage - 4 Disk Storage Floppy Drive Macintosh II Internal 800K floppy drive Optional second internal 800K floppy drive Optional internal 1.4 MB floppy drive upgrade Macintosh IIx/IIfx Internal 1.4 MB floppy drive Optional second internal 1.4 MB floppy drive Hard Drive Optional internal 40, 80, or 160 MB hard drive Specifications I/O Interfaces - 5 I/O Interfaces Expansion Processor-direct slot (PDS) SCSI 5 MB/sec. transfer rate Eight device maximum Apple Desktop Bus Two ADB ports allow daisy-chaining of peripheral devices Serial Two RS-232/RS-422 serial ports; mini DIN-8 connectors NuBus Six internal NuBus slots support full 32-bit address and data buses Specifications