Operating systems › Microsoft Windows › Windows 1.0

Windows 1.0

1985

Microsoft's 1985 first Windows, a tiled graphical shell running atop MS-DOS with overlapping windows not yet allowed.

Machines

IBM PC 5150

IBM PC/AT

IBM PC/XT

Chips

IBM CGA

IBM EGA

IBM MDA

IBM PC speaker

Intel 80286

Intel 8088

Motorola MC146818 RTC

Reference & documentation

External technical references for programming Windows 1.0 and for writing emulators.

ResourceTypeNotes
Windows Executables (NE) Reverse Engineering ↗FormatNE structure and tools for disassembling 16-bit binaries
The NE EXE File Format ↗FormatNE header field-by-field offsets, Windows native format
Win16 Memory Management (OS/2 Museum) ↗Memory mapSegment handles, global heap, movable/discardable memory model
Windows SDK Programmer's Reference (1986) ↗ProgrammingAssembly macros and system programming for Windows apps
WinWorld: Windows 1.01 ↗ROMsOriginal 1.01 floppy disk images to download
Microsoft Windows 1.01 (1985) Disk Images ↗ROMsFive original 360K IMG disk images, mirrored
Windows 1.0x Floppy Disk Images ↗ROMsComplete 1.01-1.04 floppy image set archive
Windows SDK Programmer's Reference (1986) ↗Reference468-page official function/data-structure/API reference
WinWorld: Windows 1.x SDK & DDK ↗SourceWindows 1.01/1.03/1.04 SDK libraries and sample code
WinWorld: Windows 1.x SDK & DDK ↗ToolDeveloper toolkit, compilers and build tooling