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- From: glen@hpfcmgw.FC.HP.COM (Glen Robinson)
- Newsgroups: comp.sys.hp
- Subject: Re: Parallel port compatibility problems?
- Message-ID: <17780207@hpfcmgw.FC.HP.COM>
- Date: 31 Jul 92 00:34:19 GMT
- References: <1992Jul28.221947.247982@cs.cmu.edu>
- Organization: HP Fort Collins, CO
- Lines: 49
-
- In comp.sys.hp, russell@ncube.com (Russell Randolph) writes:
-
- > Well, the Installing Peripherals section for HP 700 series in the 6/92
- > lrom cd says nothing about these modes. So is there somewhere else I
- > should look? Is it not documented? Do to inconsistencies in the
- > documentation, I had a script try ALL possible minor numbers to the parallel
- > port, but no luck. This was probably on 8.05.
-
- Regrettably, I don't have access to a shipped 8.07 man page. I have a newer
- version of HP-UX (not released to customer shipments yet) on my system,
- but I am all but certain that the following man page entries apply to the
- builtin (CORE) Centronics port on Series 700 for release 8.07.
-
- mode 1 Automatic handshaking using both nACK and BUSY.
- Minor number format: 0xSEF001.
-
- mode 2 Automatic handshaking using only BUSY. Minor
- number format: 0xSEF002.
-
- mode 3 Bidirectional read/write used for ScanJet. Minor
- number format: 0xSEF003.
-
- mode 4 Stream mode. Data is essentially transmitted to
- the peripheral without any handshaking protocol.
- Minor number format: 0xSEF004.
-
- mode 5 Pulsed mode using both ACK and BUSY for automatic
- handshaking. Similar to mode 1 except that the
- data strobe line, nSTROBE is pulsed for a fixed
- amount of time by the sender, then released.
- Minor number format: 0xSEF005.
-
- mode 6 Pulsed mode, using only BUSY for automatic
- handshaking. Similar to mode 1 except that the
- data strobe line, nSTROBE is pulsed for a fixed
- amount of time by the sender, then released.
- Minor number format: 0xSEF005.
-
- Modes 1 and 2 support most printers belonging to the *Jet series
- (LaserJet, DeskJet, QuietJet, etc.).
-
- Again, I could very well be wrong, but you might give these a try. Please
- note that mode 3 is Scanjet specific and will not work on other manufacturers
- centronics scanners. If memory serves me correctly, nobody (read manufactuers
- of scanners here) agrees on centronics input line/handshake protocol.
-
- Not a statement of my company etc.
-
- Glen - R
-