Fat Mac
The Macintosh 512K Personal Computer is the second of a long line of Apple Macintosh computers, and was the first update to the original Macintosh 128K. It was virtually identical to the previous Mac, differing primarily in the amount of built-in memory (RAM)Like the 128K Macintosh before it, the 512K contained a Motorola 68000 connected to a 512 kB DRAM by a 16-bit data bus. Though the memory had been quadrupled, it could not be upgraded. This large increase earned it the nickname Fat Mac. A 64 kB ROM chip boosts the effective memory to 576 kB, but this is offset by the display's 22 kB framebuffer, which is shared with the DMA video controller. This shared arrangement reduces CPU performance by up to 35%. It shared a revised logic board with the re-badged Macintosh 128K (previously just called the Macintosh), which streamlined manufacturing. The display was the same, at 512x384. .
Fat Mac
Fat Mac
Fat Mac
Fat Mac
Fat Mac
Fat Mac
Fat Mac
Fat Mac
Fat Mac
Fat Mac
Fat Mac
Fat Mac
