High Quality Content by WIKIPEDIA articles! The Apricot PC was Apricot Computers` first personal computer made for business use. The press received it well, especially for the high resolution 800 x 400 of its time and its trackball cable (future models will be IR). It is the first non-Japanese computer using 3.5" Sony floppy disc units. It uses a Intel 8086 processor running at 4,77 MHz. Optional 8087 math co-processor were possible. Memory is 256 kB expandable to 768 kB. CRT green-screen 9" with text mode 80 x 25 or graphics 800 x 400 pixels. Equipped with two floppy discs and a keyboard with an integrated LCD display. Released in 1983, it achieved success in the UK. The manufacturer failed completely to clone the IBM BIOS, so although it ran MS-DOS and CP/M-86, it was not IBM PC compatible as the underlying system BIOS and hardware is very different. An Intel 8089 I/O controller was used, instead of the Intel 8237 DMA chip used in IBM computers; the ROM was only a simple boot loader rather than a full BIOS; and there was no 640k barrier. The floppy disk format was "not quite compatible"; attempting to read an ordinary PC floppy in an Apricot, or vice versa, would result in a scrambled directory listing with some files missing.