pef@cs.qmw.ac.uk (Panayotis Fouliras) (02/21/91)
I have an 80386/25MHz based compatible, with a 40Mb @28msec hard disk (it is a WD IDE/AT hard disk). I also have a WD "file card" (= basically, an IDE/XT hard disk, 32Mb, with a controller, again from Western Digital, with 70msec access time). I do not remember the model name, but from a recent list, I saw that it has been discontinued. I know that both IDE/AT and IDE/XT have a 40-pin connector, but different layout. I tried to connect the IDE/XT on the interface card for the IDE/AT hard disk and it would not work. The same happened when I took the interface card out, and plugged in just the IDE/XT hard card. The machine would produce a series of beeps, the screen would remain blank and then nothing. I tried the same thing on the 8-bit expansion slots, after configuring through the BIOS the IDE/XT hardcard's existence, but the same symptoms persisted. The question is: Have I been doing something wrong? Or simply an IDE/XT hard disk does not work on AT buses? Any answers would be appreciated. Panayotis Fouliras (QMW, Univ of London)