Aug 20, 2021 · It performs full emulation of IBM PC/XT (8088) hardware that implements the chipset/ISA using the actual BIOS images of the PC, video cards and hard drive controllers. It is an actively …

Feb 7, 2025 · A number of software packages were available at launch with the IBM PC. The word processor in the list was EasyWriter (which wasn’t developed by IBM, but by John Draper). Like …

May 16, 2025 · 10 How was the first ever IBM PC BIOS image created? Using an 8088 CPU development system offered by several manufacturers, but most likely from Intel. Halfway through …

Oct 21, 2024 · A small preface: the XT wire HDD interface had limits of 1024 cylinders, 16 heads and 63 sectors. But the BIOS calls (int 13h with AH = 02, 03, 08) provided different limits: 1024 cylinders …

Mar 1, 2018 · The original IBM PC and later variants used an Intel 8253 or 8254 as a sound chip. Why did users add sound cards such as the Adlib or Sound Blaster. I remember voice output with …

Aug 20, 2023 · Since function AH=08 (Get current drive parameters) is unavailable, how does PC-DOS/MS-DOS detect the number and type (e.g. 180 kB or 360 kB) of floppy drives on a pre-XT …

Jan 21, 2018 · The drives had to be jumpered accordingly. Hardware-wise the PC floppy controller also supports this. But as the original housing only allowed two (full height) drives, the controller thus split …

Aug 15, 2022 · The IBM PC keyboard behaves as though it holds a bitmap of every key that is pressed or released, and repeatedly scans the keyboard, comparing the present of each key with the state in …

Oct 31, 2023 · On IBM PC compatibles, the first widely-known display subsystems capable of displaying 640×480 pixels (resulting in square pixels with a 4:3 display) were the MCGA and VGA in 1987. By …

Oct 1, 2018 · The "640k limit" (hole in contiguous RAM) was just 1 of a series of short-sighted, odd, and/or bad decisions involving the PC. Others include a) IBM choosing 8086 family over 68000. b) …