Macintosh IIfx
For its time, the Apple Macintosh IIfx was an exceptionally fast Motorola 68030 -based computer, which came onto the market with prices starting at around EUR 9,000 in the basic configuration. It was built from spring 1990 to spring 1992.
It was used for classic number crunching on the desk, scientific work, DTP and graphics workstations or department servers under A / UX . The IIfx was delivered with System 6.0.5, but it can also run the more modern Mac OS 7.6.1 or A / UX up to version 3.1.1.
The Motorola 68030 CPU and the Motorola 68882 math coprocessor are clocked at 40 MHz . On the motherboard there is a 32 KB level 2 cache, eight RAM sockets for the proprietary IIfx SIMMs with 64 pins for a maximum expansion of 128 MB RAM ( an incredible amount for the time), a SCSI interface with DMA support , fast serial interfaces as well as one PDS and six NuBus expansion slots.
The SIMMs of the IIfx had to be assembled in groups of four of the same size and organization (one bank with 4 SIMMs), as with the 30-pin SIMMs common at the time. The additional 34 pins per SIMM made it possible to simultaneously write and read access to the same SIMM bank, which enabled memory access to be accelerated further.
In contrast to other models with PDS, it was not possible to access the NuBus slots on the IIfx from the PDS . This made the construction of accelerator cards more difficult, there were only a few exceptions: There the accelerator card in the PDS was connected with a cable bridge to an additional NuBus card belonging to the accelerator, thus creating the link PDS-NuBus.
The housing format was adopted from the Mac II, two HD floppies and two SCSI hard disks could be accommodated internally. Typical hard disk sizes of the time were 40 to 200 MB , mostly in the 5.25 "format.