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- Meeting Notes CCP/M February 9, 1993
-
- Maximum Leader Al Hathway called the meeting to order and asked for the
- reports from the officers. The Secretary's notes were blessed. The
- Treasurer's report included the bottom line of $750.53. Newsletter Editor
- Tom Veile has been given recently to hoarding bills to CCP/M and when he
- gives them to Treasurer Tom Mannion, the Club may very well go down the
- proverbial Chapter 11 tube, but, as long as he keeps them, we're fiscally
- fine.
-
- Steve Dresser, Al Hathway, M* Dalene, Diane Thome, Tom Mannion, Eric Palm,
- Stephen Griswold, Lee Bradley were present and accounted for.
-
- Trenton '93 will be April 17-18 this year. Al Hathway expressed interest in
- helping organize the CP/M conference(s) and Banquet. Start gathering your
- used equipment, your checkbook and gas up your truck. You've got less than
- two months to T-Day.
-
- David McGlone sent out The Z-Letter #23 recently to subscribers. He has
- moved to Eugene, Oregon. Chris McEwen has indicated interest in publishing
- The Z-Letter and I believe the next issue will be done on his press. The Z-
- Letter costs $18/year and may be ordered from Lamda Software Publishing,
- 149 West Hilliard Lane, Eugene, OR 97404-3057. Support David's efforts and
- send him a check. The Z-Letter is excellent.
-
- Al Hathway talked about the great deals you can get at computer shows. He's
- recently picked up an RS-232 switch, some floppies etc. at very low prices.
- Typically, it costs about $7 to get in. Keep your eye out for announcements
- of these shows in the paper.
-
- Stephen Griswold has recently equipped the BBS with ZMODEM protocol
- capability. He tried to demonstrate it but the board was down. The board
- has been failing recently and we have not figured out what the problem is.
- A local operator must be present and must hit R to Retry the disk access
- when the system crashes.
-
- Al Hathway gave a brief history of modem protocols. With packet switched
- networks and their overhead, efficient protocols have become important. The
- original 128 byte packet (Xmodem Christensen) evolved into 1k block
- protocols. Much later, Chuck Forsberg developed the HMODEM program (for
- Heath). This eventually become known as ZMODEM protocol. ZMODEM features
- dynamic data sizing and is 95% efficient. 1k block transfer is 80%
- efficient. This translates to a 1 1/2 minute savings for a 10 minute
- transfer.
-
- Stephen got RZMP and ZMP from Ian Cottrell's board. Hal Bower has written
- an SB180 overlay. RZMP and ZMP were written by Ron Murray. There is a large
- collection of overlays for different CP/M machines.
-
- Among the features making ZMODEM attractive, Tom Mannion and others
- mentioned crash recovery (an aborted transfer can be resumed from cut off
- point on a second call). Also, ZMODEM is well-suited to the latest modems
- which support MNP4 and MNP5. Tom Mannion said MNP5 (the one which does
- compression) and ZMODEM are capable of 280 characters per second (not sure
- what baud rate this applies to.)
-
- Finally, ZMP uses overlays. If you want to get ZMODEM going on your CP/M
- computer, CCP/M has at least 4 people that have experience in preparing the
- software for different machines.
-
- If you are running an IBM type computer, an external protocol which hooks
- into ProComm (and I'm sure other communication programs) and which does
- ZMODEM transfers is available. It's called DSZ and may be found in the
- archive Z-EASY.ZIP.
-
- Lee Bradley, 2/23/93.
-
- These notes were written on a 486DX2/50 under Myz80 and Z-System using ZDE
- version 1.6. Just in case you're interested. The SIEVE12 benchmark on this
- machine takes about 5 seconds. It takes 39 or so on my 4 mHz Royal. I've
- got ZSDOS, DateStamper and NZCOM running. I have 7 megabytes left on my B:
- drive. About the same left on my A: drive. I'm in trouble on my C: drive;
- only 6 megabytes left. Of course, there's always the D: drive for those
- times when you need a few more k. It has 1 meg.
-
- I would like to personally thank Newletter Editor Tom Veile for the job he
- is doing on SIB. Tell him you love him by sending material! He takes
- floppies, hard-copy, crayoned code on business cards, holographic images,
- virtual vaporware. Anything. The only requirement is that it be emulatable
- on a KIM-1 (or compat.). Tom Veile's address is: Tom Veile, 26 Slater Ave.,
- Norwich, CT 06360
-
- Speaking of 486's, the first thing I did (well, the 2nd thing, the first
- thing I did was send the hard disk back for a replacement hard disk) was
- remove the line in the AUTOEXEC.BAT file that ran Windows 3.1. The only
- thing I've figured out how to do under Windows is exit from it. This you do
- by typing Alt F X. See elsewhere for Windows Tag Lines that Stephen
- Griswold, Tom Mannion, Howard Goldstein, Daryl Gehlbach and others have
- collected.
-
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-