![]() The next year, the first PC based on a 80386 was made by Compaq and IBM failed to impose the PS/2 standard in 1986. This computer was revolutionary, but it was the last time IBM imposed a standard to the PC clone industry. Two models were launched: the PC-AT model 1 (256 KB RAM, two floppy disk units and a color screen) and the PC-AT Model 2 (512 KB RAM, one floppy disk unit, one hard disk and a color screen). It had a new keyboard too (the same we use now, more or less) with cursor keys and a key that could lock it. PCjs offers a variety of online machine emulators written in JavaScript. The PC AT had a new version of the Microsoft OS: MS-DOS 3.0 which could manage the new 5.25" floppy disk format (1.2 MB), the new hard disk capacities (20 MB and more) and allowed file sharing. Home of the original IBM PC emulator for browsers. ![]() IBM added a lot of new features: they abandoned the old Intel 8086 to the Intel 80286, so the PC AT used new 16 bit expansion slots. The IBM PC AT was the successor of the PC and the XT. The typical AT sold with a 20 or 30 MB hard drive and 512K of RAM. ![]() It was introduced in 1984 and included several "new" features such as a 6 MHz Intel 80286 processor, a 1.2MB 5.25" floppy drive and an improved keyboard. The IBM 5170 or PC AT was IBM's second generation PC (if you consider the XT an extension of the original PC). IBM 5170 / PC AT Home > Browse Our Collection > Computers > IBM > IBM 5170 / PC AT
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