On Mon, Mar 17, 2008 at 09:28:39PM +0100, Philipp Hachtmann wrote: No specific ideas, but there should be IOT selection jumpers that may tell you if the card is responding to LP8E instructions or not. I'd look the defaults up, but I don't have satellite right now, and I haven't memorized those IOTs. If you look up the LP8E and check out the IOTs, you could try writing a small program and issuing the one to send a byte to the printer and check the activity on the Berg connector. A parallel printer is going to typically have data bits and handshaking. Most OMNIBUS cards are pretty sparse - it might not be too difficult to reverse-engineer it, especially if you start by looking at the bus interface and IOT section of a real LP8E - any driver-compatible clone is likely to be quite similar at that stage. If the card isn't using LP8E IOTs, it could be doing anything, though, which isn't impossible to figure out, but it adds a bit of complexity to the task of figuring it out. I don't recognize that term. Yuo didn't say what kind of -8, but if you have an -8/a with the standard I/O cards installed, you can use the general purpose parallel I/O on the DKC8AA as a parallel printer interface. There is supposed to be a driver for OS/8 that knows about that ports IOTs and which does the data bit inversion in software (since the DKC8AA is not set up identically to the LP8E). I haven't tried to do it, but I've read about it, and it sounds straightforward. If you have an older OMNIBUS machine, you won't have room for a hex-height card, so you would need an LP8E or perhaps an LQP8E or similar. My -8/a has an LP8E running to an LA180 (when they are in the same room), mostly because I bought the LP8E back in the 1980s before I heard that you could use the DKC8AA, or else I probably would have spent the money on a different interface. -ethan -- Ethan Dicks, A-333-S Current South Pole Weather at 17-Mar-2008 at 21:00 Z South Pole Station PSC 468 Box 400 Temp -76.5 F (-60.3 C) Windchill -114.0 F (-81.1 C) APO AP 96598 Wind 10.6 kts Grid 64 Barometer 675.8 mb (10787 ft) Ethan.Dicks at usap.gov http://penguincentral.com/penguincentral.html