Mac IIcx

Overview Building on the success of the Mac IIx, the 1989 IIcx offered the same horsepower in a smaller case. This was made possible by eliminating 3 Nubus slots and using a smaller (90W) power supply. Although advertised as a 32-bit computer, the Mac IIx ROMS were "dirty," containing some 24-bit code. Running in 32-bit mode requires MODE 32 from Connectix.

Details

• introduced March 1989 at $5,400; discontinued October 1990 or March 1991 (conflicting reports)
• requires System 6.0.3 or later
• 16MH 68030 CPU and 68882 FPU
• 1MB RAM, expandable to 128MB using 4-SIMM banks of 120ns 30-pin memory (requires MODE 32 to go past 8MB)
• ADB ports for keyboard and mouse
• DIN-8 serial ports on back of computer
• DB-25 SCSI connector on back of computer
• three Nubus slots
• upgrade path: IIci, Quadra 700

Accelerators & Upgrades

• Apple Macintosh IIci motherboard (25MHz 68030)
• Apple Macintosh Quadra 700 motherboard (25MHz 68040)
• MicroMac Diimo/030 (50MHz 68030), 64KB cache, optional 50MHz 68882 FPU
• MicroMac Carrera (33MHz and 40MHz 68040), optional 128KB cache
• MicroMac 90MHz Carrera (45MHz 68040)

Cautions

• Serial port limited to 57.6kbps; use of a 56k modem is not recommended.