Date: Sun, 27 Oct 1996 09:54:07 -0500 Message-Id: <199610271454.JAA09605@delorie.com> From: DJ Delorie To: chambersb AT juno DOT com CC: djgpp AT delorie DOT com In-reply-to: <19961027.224846.8183.1.chambersb@juno.com> Subject: Re: 386Max & DPMI 1.0 > >machine: > > am386DX 40, 8MB RAM, CD-ROM 4x, modem on COM2, 1MB 8900CL/D gfx > > how can you have a DX machine without an FPU? > Isn't that the definition of DX? No, SX/DX mean different things on the 386 than on the 486. 386DX means it's got a 32-bit external data bus. The 386SX had a 16-bit data bus. Neither had a built-in FPU - you had to add a 387. For 486's, the 486DX had an FPU built-in, and the 486SX did not, but both had the same external data bus.