jec (11/15/82)
There is one program that I know of that uses the INT 27H and actually works (although it defines another interrupt for some reason I can't figure out). Have you looked at SPEEDUP.COM? I think it was originally published in PC Magazine in either issue 3 or 4. I received another letter from someone else that had gotten INT 27H to work for a screen printer (that spooled to the printer), but he's had trouble with disk time-outs, but I suspect that was due to the clock interrupt being foobared. The code for SPEEDUP.COM is thus: MOV DX,12H MOV AX,251E INT 21H ;CREATE INT 1E AT DS:12H MOV DI,DX ;DI = 12H MOV SI,DLOCH ;MOVE DATA INTO THE MOV CX,0BH ; RESERVED PORTION OF REPZ ; THE PROGRAM SEGMENT MOVB ; PREFIX BLOCK. XOR AX,AX INT 13H ;RESET DISK MOV DX,DI ;SET LOWMEM AT END INT 27H ; OF THIS PROGRAM DLOC: DB DF,02,25,02,08 DB 2A,FF,50,F6,00 DB 04 This is a nifty little program even aside from showing how to use INT 27H. If you have DOS 1.0 this will speed up your disk access time by almost 100%. All you have to do is run it. Now, anyone out there with a working spooler? Mike (...devax!pur-ee!iuvax!isrnix!jec)