Operating systemsMicrosoft Windows › Windows 98

Windows 98

1998

The 1998 consumer release adding built-in Internet Explorer integration, USB support and the FAT32 file system.

Machines

Chips

Reference & documentation

External technical references for programming Windows 98 and for writing emulators.

ResourceTypeNotes
Microsoft PE Format Specification ↗FormatCanonical PE/COFF executable format used by ReactOS
Microsoft FAT File System Specification (fatgen103) ↗FormatOfficial Microsoft FAT12/16/32 filesystem spec
x86 and amd64 Instruction Set Reference ↗Instruction setPer-opcode reference from Intel SDM
Ralf Brown's Interrupt List (RBIL) ↗Interrupt listDefinitive DOS/BIOS interrupt & I/O port reference
x86 Memory Map (OSDev Wiki) ↗Memory mapReal-mode conventional/upper memory, IVT, BDA
Building VxDs in Windows 95 (Dr Dobb's) ↗ProgrammingVMM messages, IRQ virtualization, dynamic VxD internals
Windows 98 Second Edition ISO (Internet Archive) ↗ROMsBootable Win98 SE install image with key
Programming Reference for the Win32 API ↗ReferenceOfficial Win32 API index by header/technology
Install Windows 98 in QEMU (Computernewb) ↗ToolQEMU device/CPU config for emulating Win98