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Macintosh II
Released in 1987 and powered by a Motorola 68020 CPU clocked at 16MHz.
General Information
Introduced in March 1987, The Mac II was the ultimate expandable Mac. Based on the new 68020 processor, the Mac II was the first 32-bit Mac (although it was not "32-bit clean"). The Mac II included 6 NuBus slots, which allowed for a number of different Apple and Third Part expansion cards. The Mac II was the first Mac with color capabilities -- a graphics card could be installed capable of handling up to 16.7 million colors. It originally sold for $3,898 for the basic system, and at $5,498 for 1 MB of RAM, one 800K floppy disk drive and one 40 MB internal SCSI hard disk drive. This model was discontinued in January 1990.
Codename: Little Big Mac.
CPU
Motorola 68020 processor running at 16MHz, optional built-in paged memory management unit (PMMU). Motorola 68881 math coprocessor.
Memory
1MB standard, expandable to 8MB originally.
Expansion
The Macintosh II offered six NuBus slots, one of which would have been occupied by a graphics card.
ROM, RAM, FPU & PMMU Configurations
MACINTOSH II ROM, RAM, FPU, & PMMU CONFIGURATIONS ------------------------------------------------------------------ ROM PART NUMBERS SOCKET DESIGNATION ORIGINAL FDHD UPGRADE UF11 (ROM3) 342-0108-B 342-0642-C UF12 (ROM4) 342-0107-B 342-0641-C UD11 (ROM5) 342-0106-B 342-0640-C UD12 (ROM6) 342-0105-B 342-0639-C UI10 (IWM) 344S0043A 343S0062A ------------------------------------------------------------------ FPU & PMMU UPGRADES (NOT PART OF THE FDHD UPGRADE) SOCKET DESIGNATION ORIGINAL UPGRADE UG13 (68851) 343-0002-1 (AMU) MC68851RC16A (PMMU) UG11 (68881) MC68881RC16B (FPU) MC68882RC16A (FPU) ------------------------------------------------------------------ RAM CONFIGURATIONS Each Bank must have 4 identical SIMMs. TOTAL BANK A BANK B PMMU & MODE 32 FDHD UPGRADE RAM SIMMs SIMMs REQUIRED? REQUIRED? 1MB 0.25MB N N 2MB 0.25MB 0.25MB N N 4MB 1MB N N 5MB 1MB 0.25MB N N 8MB 1MB 1MB N N 16MB 4MB PAL Y N 17MB 0.25MB 4MB PAL Y N 20MB 1MB 4MB PAL Y N 32MB 4MB PAL 4MB PAL Y Y 64MB 16MB PAL Y N 65MB 0.25MB 16MB PAL Y N 68MB 1MB 16MB PAL Y N 80MB 4MB PAL 16MB PAL Y Y 128MB 16MB PAL 16MB PAL Y Y ------------------------------------------------------------------ 05/14/00 1st rev 06/08/00 added RAM configurations gamba
ROM Info
The 256K Macintosh II ROM has been written to support all of the previously mentioned devices and features. The ROM also includes all packages available on the Macintosh Plus. The following features are among those that have been added to the ROM:
- Color Quickdraw, and color support in other Managers
- Apple Desktop Bus support
- More fonts - Monaco 9, Chicago 12, Geneva 9 and 12
- Slot Manager to handle NuBus card communication
- 4 Voice Sound Manager
- SCSI Driver
Diagrams/Schematics
Documentation
See Also
External Resources
- https://cdn.preterhuman.net/texts/computing/Apple_Service_PDF/68k_Macintosh/macintosh_ii.iix.iifx.pdf - Apple Service PDF
The Macintosh II Series |
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Macintosh II -- Macintosh IIx -- Macintosh IIcx -- Macintosh IIci -- Macintosh IIsi -- Macintosh IIvx -- Macintosh IIvi -- Macintosh IIfx |