I found an HP150 (model 45851A?)--how do I make it work?

Hi, I have a bunch of programs for the HP 150 including several versions of MS_DOS. As you've probably figured out by now, the 150s aren't entirely IBM compatible. The programs for it should use only DOS calls, if they access the hardware directly then they have to modified to work with the 150. If your machine is a box with squared corners and the expansion cards are mounted vertical behind the monitor then it's a TouchScreen II. If the machine has nice rounded edges and the expansion cards are horizontal in the bottom then it's the original HP 150. The TS II has a 5 pin DIN connector in the back. That's used to provide power for a HP 9123 disk drive. The 150 and TS II can both use the HP 9121 and 9122 3.5" floppy disk drives. The 9121 is a single sided drive and the 9122 is a double sided drive. Both drives are AC powered. The HP 9123 drive is exactly the same as the 9122 except that it has no power supply and gets it's power on a 150 or any other HP machine that supports the 9122. The S verion of the drives only have a single drive but the D verson of the drives have dual drives. FWIW there is also a HP 9122C but it's scarce. The C is a quad density drive and is not compatible with the other 9122s. I don't think the 150 or TS-11 supports the 9122C. The Touch Screen feature is standard on the 150 but optional on the TS-II. Strange! I've never seen a Touch Screen on a TS-II. I don't think many buyers added it. Let me know if you have any specific questions. Joe At 09:58 PM 2/4/00 -0000, you wrote: