Windows 1.x-2.x were Intel and 100% compatible only (including AMD 286 since it was manufactured under license by Intel), and ran without problems on the NEC V20 (8088 clone). Bear in mind that there wasn't really any secondary CPU market at that time. Windows 3.x was also supported on IBM Blue Lightning and AMD processors. Windows 95 logo program lists the following chipsets: - AMD Enhanced Am486 - AMD Am5x86 - AMD K5 - AMD K6 - Centaur IDT-C6 - Cyrix 486DRx2 - Cyrix 5x86 - Cyrix 6x86 & 6x86MX - IBM 6x86 & 6x86MX - NexGen NX586 - SGS-Thomson ST486 - SGS-Thomson 6x86 - Texas Instruments TI486DX2 & DX4 Windows NT 3.51 supported Intel, MIPS, Alpha, and PowerPC. Windows NT 4.0 supports Intel and Alpha. Windows CE 2.0 supports the following chipsets: - AMD - ARM - Digital - Hitachi - MIPS - Motorola Kai -----Original Message----- From: Ward Donald Griffiths III [mailto:gram@cnct.com] Sent: Monday, May 18, 1998 9:18 PM To: Discussion re-collecting of classic computers Subject: Re: Windows 1.x platforms... Hotze wrote: seemed Nope, nein, none. While (16-bit and under) Windows can be used with other processors _now_ courtesy of WABI, WINE and other independent projects, only NT has ever been officially supported by Microsoft on any non-Intel (or "clone" -- though MS's support is questionable in that case) CPU. And support for NT on non-Intel processors has been dropping and is not promised for the future. (Then again, support for any Microsoft product can't be counted upon a year after release or release of the the next version, whichever comes earlier). -- Ward Griffiths They say that politics makes strange bedfellows. Of course, the main reason they cuddle up is to screw somebody else. Michael Flynn, _Rogue Star_