#: 19585 S7/Telecommunications 13-Jan-94 10:00:45 Sb: #RS-232 dilema Fm: Tony Elliott 71645,1367 To: all I am in a quandry about a device requiring an 8 bit w/ 2 stop bit protocal on the serial port. No printer I own uses this protocal. I have a Quadram serial to parallel buffer I could use as an interface, but this has NO setting for bits/parity. How can that be ? Isn't it necessary to match this when converting from serial to parallel. RS-232 never ceases to amaze me, even after having read all the books! Any insight someone could give me would be most appreciated. Tony Elliott There are 2 Replies. #: 19590 S7/Telecommunications 14-Jan-94 07:11:41 Sb: #19585-RS-232 dilema Fm: Bill Dickhaus 70325,523 To: Tony Elliott 71645,1367 (X) Tony, If it doesn't say, its probably 8N1, 8 bits, no parity, one stop bit. If that doesn't work, then you'll have ask around about the particular device, or try calling the manufacturer. -Bill- #: 19597 S7/Telecommunications 14-Jan-94 17:10:32 Sb: #19585-RS-232 dilema Fm: Tony Elliott 71645,1367 To: Tony Elliott 71645,1367 Thanks for the note. I gather that means "no change". ie: a fixed default. It seems to work that way. I'm just puzzled that there is no option to select a different protocal. May be the first step toward a real RS-232 standard !! Tony E. #: 19631 S7/Telecommunications 21-Jan-94 12:44:42 Sb: #18983-Novell Client for OS9 Fm: Gerhard Schumacher 100331,1572 To: Jacob "Koby" Avital 71172,2722 The German OS-9 distributor Dr.Keil GmbH offers the new software package NeWLink for OS-9 which includes Novell client software for OS-9 and a Netware 3.11 server NLM. #: 19677 S7/Telecommunications 02-Feb-94 11:36:56 Sb: #19672-Novell Client for OS9 Fm: Gerhard Schumacher 100331,1572 To: Pete Lyall 76703,4230 Don't know why a NFS solution should be cleaner ... NeWLink uses a server NLM in the Novell Server just as Novell itself for the Mac clients. At the OS-9 systems, NeWLink needs much less resources than NFS/TCPIP and runs much faster (>450 kBytes netto with new machines!). Besides, it supports the most of the common RBF utilites (dsave, dir, fsave ....). Thus, NeWLink makes access to the Novell Netware quite transparent and effective. You are right, NFS is interesting in multi-platform environments, but for pure OS-9/Novell systems, NeWLink is a good choice. Press !> #: 19969 S7/Telecommunications 17-May-94 14:15:30 Sb: #19585-RS-232 dilema Fm: Tony Gibbs 100045,2745 To: Tony Elliott 71645,1367 Dear Tony, There is not necessarily any need to worry about a device that says that it needs 2 stop bits. The stop bits on an RS232 serial stream only exist to let the hardware reset itself, and so anything that requires 2 stop bits is probably an old slow peice of kit. It is however still possible. Regards, Tony :-) #: 20096 S7/Telecommunications 04-Jul-94 22:22:51 Sb: #Help with MM/1 hi speed Fm: Eric Levinson 74471,1241 To: all I am having a problem running two modems on the two high speed ports on the MM/1. I have asked around and I have been told that it is a problem with the driver. The problem I am having is that when both modems are set to answer the line, the CD is not detected, and if someone hangs up, the signal of change of CD does not get sent. When only one modem is configured and set up, all works fine. I was told that Carl Kreider has the source for the serial drivers for OSk 2.4? Is there any way the drivers can be reworked? Also, another thing I have noticed is that the ports miss characters during hard disk I/O. I have played around with the maxcount. I think the problem may be with the DMA hardware. Any suggestions? Eric There are 2 Replies. #: 20099 S7/Telecommunications 05-Jul-94 07:47:53 Sb: #20096-Help with MM/1 hi speed Fm: Steve Wegert 76703,4255 To: Eric Levinson 74471,1241 (X) Carl did the serial drivers for the MM/1 ... and check in here often. Let's see what he has to say. *- Steve -* #: 20125 S7/Telecommunications 11-Jul-94 00:25:06 Sb: #20096-#Help with MM/1 hi speed Fm: Ken Scales 74646,2237 To: Eric Levinson 74471,1241 (X) > I am having a problem running two modems on the two high speed ports on > the MM/1. I have asked around and I have been told that it is a problem > with the driver. Well, partly driver, and partly hardware. The two ports share a common interrupt line. Apparently it would take some gymnastics in the driver to be able to ensure that both interrupts are recognized. > Also, another thing I have noticed is that the ports miss characters > during hard disk I/O. I have played around with the maxcount. I think > the problem may be with the DMA hardware. Any suggestions? The default maxcount (maxcount=65535) allows a _fast_ harddrive to monopolize the DMA bus for too long. For example, if the harddrive is able to support a throughput of about 1.8 Mbytes/sec, the system DMA has priority for about 36.4 mSec! (About 35 characters at 9600 bps.) Reducing maxcount is mandatory for proper serial port operation. Small reductions (e.g., to 16K) won't eliminate the problem. Mine is currently set for maxcount=2048. BTW, the MM/1a (i.e., with accelerator board / 68340) has different DMA mechanisms. The above is for the 68070. -------------------------------------------------------------------------- Ken Scales Delphi:KSCALES Internet:kscales@delphi.com CIS:74646,2237 ** Composed with KVed/Ved and uploaded with InfoXpress ** There is 1 Reply. #: 20129 S7/Telecommunications 11-Jul-94 21:43:11 Sb: #20125-Help with MM/1 hi speed Fm: Bob van der Poel 76510,2203 To: Ken Scales 74646,2237 The other thing to watch for on the HS serial ports is that the baud rates selected are compatible. Don't have the list right now...but you can't do things like set one for 19.2 and the other for 38.4. You can do 9600 and 19.2, or 9600 and 38.4, or both 38.4, etc. If it isn't here, I could type up the data from the 68681 data sheet and post it here. #: 20171 S7/Telecommunications 01-Aug-94 22:40:00 Sb: #20129-Help with MM/1 hi speed Fm: Ken Scales 74646,2237 To: Bob van der Poel 76510,2203 > The other thing to watch for on the HS serial ports is that the baud > rates selected are compatible. Don't have the list right now...but you > can't do things like set one for 19.2 and the other for 38.4. You can do > 9600 and 19.2, or 9600 and 38.4, or both 38.4, etc. If it isn't here, I > could type up the data from the 68681 data sheet and post it here. Good point, Bob. I had forgotten about that one. Dunno offhand if there is a good reference file describing this or not -- anybody out there aware of one? Regards... / Ken -------------------------------------------------------------------------- Ken Scales Delphi:KSCALES Internet:kscales@delphi.com CIS:74646,2237 ** Composed with KVed/Ved and uploaded with InfoXpress ** #: 20173 S7/Telecommunications 02-Aug-94 19:57:41 Sb: #20171-Help with MM/1 hi speed Fm: Bob van der Poel 76510,2203 To: Ken Scales 74646,2237 (X) Okay, Ken, here is the dope on the 68681. The problem with selecting the different baud rates on the chip is that you have to set the chip up to select baud rates from SET 1 or SET 2...and the sets apply to the entire chip, not just one side. So, here are the tables: BITS 7..4 SET 1 SET 2 0000 50 75 0001 110 110 0010 134.5 134.5 0011 200 150 0100 300 300 0101 600 600 0110 1200 1200 0111 1050 2000 1000 2400 2400 1001 4800 4800 1010 7200 1800 1011 9600 9600 1100 38.4K 19.2K 1101 Timer Timer 1110 IP2-16x IP2-16x 1111 IP2-1x IP2-1x From this the only problems appear to be some seldom used rates and 38.4K/19.2K. So, don't try to set one port to 38.4 and the other to 19.2! It won't work. Most other, normal, combinations should be okay. BTW, I hope someone captures this...I don't intend to type it in again . #: 20184 S7/Telecommunications 07-Aug-94 08:09:31 Sb: RS232 Fm: BRIAN P BROCKWAY 76672,3620 To: BRIAN BROCKWAY 76672,3620 (X) MY RADIO SHACK RS232 HAS DIED. IT LOCKS UP MY SYSTEM WHEN IN MY MULTI PAK . ANY IDEAS ON FIXING IT, OR WHERE TO BUY A REPLACEMENT WOULD BE WELCOME. THANKS, BRIAN #: 20200 S7/Telecommunications 09-Aug-94 22:23:13 Sb: #20173-Help with MM/1 hi speed Fm: Ken Scales 74646,2237 To: Bob van der Poel 76510,2203 (X) > Okay, Ken, here is the dope on the 68681. <<<<< deleted >>>>> > BTW, I hope someone captures this...I don't intend to type it in again > . Thanks, Bob. Yes, I captured it. It is now saved as "/h1/usr/notes/68681.bauds". I hope that somebody will jot down that filename, so that I can find it again... -------------------------------------------------------------------------- Ken Scales Delphi:KSCALES Internet:kscales@delphi.com CIS:74646,2237 ** Composed with KVed/Ved and uploaded with InfoXpress ** #: 20231 S7/Telecommunications 21-Aug-94 18:40:35 Sb: #USENET support for IX Fm: Steve Wegert 76703,4255 To: Bill Dickhaus 70325,523 (X) Bill, Any plans to support the USENET area in IX? *- Steve -* There is 1 Reply. #: 20232 S7/Telecommunications 22-Aug-94 07:21:24 Sb: #20231-#USENET support for IX Fm: Bill Dickhaus 70325,523 To: Steve Wegert 76703,4255 (X) Steve, Brilliant minds think alike! ;-) I spent all weekend working on USENET capture and display, now I have to work on posting messages. Right now messages are displayed as they are captured, since I haven't the foggiest idea how the newsreader figures out threads, other than by subject, which is something I'm working on anyway for IX, but its still in the planning stages. Each news group is placed into the equivalent of a section in a forum. Current plan is to support reply via email with the 'r' command, and posting to that particular newsgroup with the 'w' command. Still no idea how to handle, or even whether to support, posting to multiple groups. Any suggestions? By the way, although the CIS newsreader has some problems, its better than Delphi's, which I had considered supporting in the past, but got discouraged (now that I've got the bulk of the work done, I might tackle it now). I did notice that Delphi is also using NN, contrary to the alleged "no commercial use" restriction. -Bill- There is 1 Reply. #: 20237 S7/Telecommunications 23-Aug-94 08:15:51 Sb: #20232-USENET support for IX Fm: Steve Wegert 76703,4255 To: Bill Dickhaus 70325,523 Great news, Bill! I was beginning to get worried after reading all the messages from the PC autonav authors complaining on how they couldn't possibly script this new area. Does the CIS newsreader support cross posting? I don't know and'll have to look. I wouldn't worry about it to start with. *- Steve -* #: 20397 S7/Telecommunications 24-Sep-94 20:51:46 Sb: #20184-RS232 Fm: Dieter G. Rossmann 70314,1766 To: BRIAN P BROCKWAY 76672,3620 Have on RS-232 Deluxe Shack pak... Best offers, plus shipping... #: 20398 S7/Telecommunications 24-Sep-94 20:51:49 Sb: #20184-RS232 Fm: Dieter G. Rossmann 70314,1766 To: BRIAN P BROCKWAY 76672,3620 I have an RS-232 Shack Pack, it is upgraded with the new Rockwell chip, so You can use a high speed modem with it... Best offer hgets it. Dieter #: 20459 S7/Telecommunications 09-Oct-94 07:50:32 Sb: #20397-RS232 Fm: BRIAN P BROCKWAY 76672,3620 To: Dieter G. Rossmann 70314,1766 Hi, will offer $20.00 plus shipping for your RS-232 pak. Thanks Brian Brockway #: 20636 S7/Telecommunications 20-Dec-94 19:15:45 Sb: BBS Going Down... Fm: Rogelio Perea 72056,1204 To: ALL Here's a cross-post from Jim's CoCo Corner BBS...... -------------------------------- CUT HERE ----------------------------------- =*=*=*=*=*=*=*=*=*=*=*=*=*= * December 1, 1994 * =*=*=*=*=*=*=*=*=*=*=*=*=*= Those few of you that have continued to use this system over the last few months already know what's coming....... December 31, 1994 is the CoCo Corner's LAST DAY on-line !!!! I've not wanted to do this, but the lack of use has forced it. I can't justify leaving it running anymore..... To those of you that have been faithful users, I say 'Thank You' for your support of my little adventure in telecommunications. I hope the information you have gotten from this system's file and message bases have help you enjoy you 'CoCo' as much as I have over the years. I was glad to have been here for the last 7 years helping all that needed it. Have a very Merry Christmas and the Best of a New Year !!! Jim Snider - Sysop/Owner of the CoCo Corner... -------------------------------- CUT HERE ----------------------------------- Well, it has been a L-O-N-G seven years...... ;-) Rogelio Perea [72056,1204] Nogales Sonora MEXICO Press !>