Macintosh Plus
The Macintosh Plus was a model from Apple Computer . It was introduced in 1986 and was part of the program until 1990.
The Macintosh Plus had a Motorola 68000 processor with 8 MHz clock frequency and was based on the housing of the Macintosh 128K and Macintosh 512K series with a built-in 9-inch screen (512 × 342 pixels, monochrome ). The case was initially beige, later platinum gray. Compared to the previous models, the main memory has been increased to 1 MB and could be expanded to 4 MB by simply plugging in memory modules . In addition, there is a larger ROM (128 KB instead of 64 KB) and a SCSI interface, to which external hard and removable disks, but also SCSI Ethernet adapters, can be connected.
The early Macintosh Plus had the signature of the developer on the back inside of the case. For this purpose, every employee significantly involved in the development was allowed to sign a paper, which was then etched into the existing mold using a film matrix. This created a relief effect with raised signatures on the inside of the case. That first master mold didn't last long, however, and only the first 70,000 Apples were cast like this. Then came a second form, in which one no longer ran the expense of expensive subsequent etching.
The Macintosh Plus had no fans; rather, he made use of the chimney effect. The ventilation slots on the bottom and on the top of the Mac Plus housing should therefore never be covered, otherwise the Mac would overheat within a very short time and parts of the hardware would even burn through. This was especially true for the Macintosh Plus, Macintosh 512k (e), and Macintosh 128k, all of which were shipped without a fan.
Although the Macintosh provided a suitable connector for a 5.25-inch drive, these drives were not allowed to be connected because they could potentially damage the Mac's controller. Therefore only the usual 3.5-inch drives for 800 KB or Apple's SuperDrives (HD drives with 1440 KB) should be connected.
The successor to the Macintosh Plus was the Macintosh SE , which was equipped with an expansion slot and ADB .
emulator
With Mini vMac it is possible to emulate the following Macs:
- 128K
- 512K (e)
- plus
- SE
A ROM image of one of these Macs is required for operation; it can easily be read from them using an additional program. Mini vMac runs on Mac OS (X), Linux (x86), Solaris (SPARC and x86), Windows and other operating systems and allows the use of System 0.8 to 7.5.5.