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XMODEM - REMOTE CP/M FILE TRANSFER PROGRAM This program allows a remote user to transfer files (to or from) RCPM systems running under BYE (remote console program). ---------------------------------------------------------------------- Updates and revisions (rev order) ---------------------------------------------------------------------- v12.5 Fixed conditional assembly bug which caused date to 07/13/86 appear in log twice when MBBS and BYEBDOS were both set to YES. Fixed conditional assembly bug which did not allow MBFMSG to be set to YES while MBDESC was set to NO. Removed patch to log download before sending EOF because EOF would not be sent, leaving caller's program in file transfer mode, if LOGCALL routine exited with an error. This problem was noticed by Keith Petersen. Modified to abort any download which would result in a user exceeding his time limit when BYEBDOS is YES. Fixed bug which would cause caller to be logged off without updating log file if transmission errors caused his download to put him over time limit when BYEBDOS was YES and CLOCK and TIMEON in BYE were YES (call to TCHECK in BYE's extended BDOS call would hang up on caller). Revised comments for some equates to make them easier to understand. - Murray Simsolo v12.4 Fixed so that upload area is NOT asked if "XMODEM" 03/13/86 only typed (still asked if "XMODEM A" is used.) Also fixed so upload area is NOT asked if the "RM" function is being used to upload a message file. New features: New uploads are made $SYS files if the SYSNEW option is enabled. This makes it easy to keep files in the right place, all you have to do is reset the file attributes. A NEWPRV option for the MBDESC option makes all new uploads private messages to SYSOP (new MWHATS30 has "O" (for OK) option to make private upload descriptions public for sysop use only). I also fixed bugs that were putting characters with high bits in the log file and possibly in upload descriptions as well. Also a bug in the CONTIN: area spotted by Michael Conley was also fixed. -- Kim Levitt MBBS HQ PDSE (213) 653-6398 ---------------------------------------------------------------------- v12.3 Well, I blew the SPCDU stuff!. I guess I didn't un- 03/05/86 derstand how the LOGDU really worked. The only prob- lem it should have caused is that the Sysop would have gotten the wrong description of which D/U he was going to upload to. These are now fixed. The Sysop can put the file in the current D/U or specify the D/U he wants a file to go to. Also fixed four BDOS equates noticed by Bill Duerr: The BDNULL and BDTOUT, and the BDHRDL and BDWRTL equates did not agree with the BYE339 jump table. BDWRTL is the one that may cause problems. XMODEM said BDWRTL was 76. BYE said it was 75. These are also fixed now. -- Russ Pencin Dallas Connection (214) 238-1016 300/1200/2400 baud, 24 hrs. ======================================================================== v12.2 Added error check for library read functions to abort 02/22/86 on read error. Revamped the upload file description code to show the sysop ( if ZCPR2 ) the actual D/U that he will be uploading the file to. Revamped the ASKAREA code to skip asking the sysop what area. Removed the BYEBDOS conditional for LOGCAL which kept BYEBDOS systems from getting the VRECNO and correct file time (near EOT1:). Consolidated BYECHK to work with BYEBDOS or others to allow the ACCESS checking to be a stand-alone equate (no longer tied to MBBS). Added ASKSYS equate to set whether sysop wants to be asked for file descriptions or not. Added ASKIND equate to allow category descriptions for uploaded files. Moved WRTLOC and CONFUN to a miscellaneous flag area so they won't be confused with the MBBS equates. Added BYEBDOS conditionals to all B3RTC code to insure no conflict of equates. -- Russ Pencin Dallas Connection (214) 238-1016 300/1200/2400 baud, 24 hrs. ======================================================================== v12.1 Fixed bugs in RTC handling for MBYE systems, other bugs 01/14/86 remaining since v11.7. Added modified XMDM10XX patch so that systems supporting multiple operating systems and/or computers can separate uploads into different upload areas. (XMDM10XX patch by Russ Pencin of the Dallas Connection RCP/M.) XMDM119.FIX fixes by Brian Rau (COG-RCP/M sysop) were also included. (Some of these were included in XMDM120 by Irv Hoff in parallel.) Also removed unnecessary blank lines and ENDIF comments, (no need to comment ENDIFs on short sections of con- ditional code, although is helpful on longer sections), and reduced amount of code by creating subroutines. Equates set up for a ZCPR/MBBS system. Added NDESC option so "XMODEM RN FILE.TYP" will allow a user to bypass the DECRIB or MBDESC optional description input (for uploads that are pre-arranged or need no description.) Also added SYSABT option (for CONFUN users) to allow the sysop to abort up or downloads with ^X on system console. (Suggested by Robert Crump.) -- Kim Levitt MBBS HQ PDSE (213) 653-6398 300/1200/2400 baud, 24 hrs. ---------------------------------------------------------------------- 01/11/86 There have been several XMDM119 'bug' and 'fix' notes cir- v12.0 culating. Incorporated the change to the "TIME:" routine suggested by Russ Pencin - he added a PUSH-POP PSW to keep the value in the 'A' register that contains the logon hour from being destroyed, making the program think the user had exceeded his maximum time limit. Also several changes sug- gested by Brian Rau, although one was not added as it would have had undesired results if using equates in the EXIT area different from his selection. Keith Petersen had a problem recently that caused my getting involved in checking out the program. He had a disk problem which allowed XMODEM to go ahead and read data from a bad record into the 'send' buffer, which was then sent as valid data. He mentioned there was possibly an error in the read routine, not only in XMODEM but perhaps in KMD as well. So I started checking that area very carefully and found that both programs handle that correctly - if the BDOS call #20 (read next record) returns with 00H, the read was ok. If it returns with a 01H, it was an end of file. Anything else is an error and can be handled as such. Studying the "RDBLOCK" routine (in both XMODEM and KMD) shows this is being handled correctly, with a "File read error" statement printed if the BDOS call cannot get a valid read. Checking with a number of SYSOPs reveals similar action on a wide variety of equipment - if a bad sector prevents a good read, normally the computer stops at that point, displaying: Disk Err on B: Bad Sector I suspect you have all seen that at one time or another. It usually takes a CR or CTL-C to again put the computer into operation, at which time it "appears" to be reading normally but in reality almost certainly has different information from what it should. It would appear there is nothing the user can do about this, except to run FBAD on the disk system periodically and hope no bum sectors show up - however the bad sector usually does stop the machine at that time, notifying the operator he has a problem and preventing further downloads at that moment. Anybody ambitious to do an update should consider cleaning up the mess the CP/M+ section(s) are in. There are areas of unused code (no labels calling them) ahead of LOOP: GETBTIM: and GETBDAT: routines - perhaps other places as well. Also restored the conditional calls in the comment field af- ter the ENDIF statements. Many SYSOPs felt those were quite valuable in following the progress of various routines, par- ticularly if they wanted to customize the program for their own use. - Irv Hoff ---------------------------------------------------------------------- 01/01/86 Fixed bug in LOGCAL which caused a download to record in v11.9 XMODEM.LOG as A0> regardless of actual drive/user. Elimi- nated MBYETOS equate. Now anyone running BYE3 or MBYE with an RTC can use maximum time on system to limit download time tines, and some unused labels removed. - Murray Simsolo ---------------------------------------------------------------------- 11/02/85 New version that will allow a "RM" function to upload a mes- v11.8 a message file for entry in a MBBS system running MBYE v4.1 and up with MFMSG.COM v2.0 and up. Also fixed so MBDESC will show disk/user area file uploaded to in the NEW UPLOAD: filename display. Also, I included an update by Lavern Og- den that enables MBYE users to have a user's max time on system be used in the calculations for time allowed for downloads. - Kim Levitt ---------------------------------------------------------------------- 09/08/85 Added patch so MBBS used to enter upload descriptions into v11.7 into message file. (MBYE40 and MBBS40 needed for this.) Also added Murray Simsolo's XMDM116.FIX and a variation of Mark Motley's fix to clear the WRTLOC flag when the "help" message is displayed. The user can abort it and his TOSEXIT equate to make the TOS display an option on exit. Also made it so that instead of time on system being reset, max time allowed on is adjusted instead if a user uploads a file. Added LOGSYS equate to pick the old LOG.SYS filename as new MBBS will work with XMODEM.LOG as well as LOG.SYS now. Also added DWNTAG option so files tagged with "F3" status attri- bute can be downloaded regardless of access privileges. Fixed bugs introduced into v116 by Paul Traina (he eliminat- ed needed WRTLOC clear in DESCRIB optional code). NOTE: Read MURPHY'S LAWS re: computer program bug fixes. (IF NOT TURKEY). (Although I didn't like all of Steve's "fixes", I was trying to integrate his updates with John Hoffman. The The old NOT X and NOT Y might have been more confusing than than NOT (X or Y) but either works. But (NOT X or Y) is NOT the same thing. Changed OK2400 comments to reflect change in code by Paul Traina.) Added code so ^X, pause, ^X will abort an upload. - Kim Levitt ---------------------------------------------------------------------- 08/11/85 Fixed bugs introduced between 112 and 115. Added Kevin Mur- v11.6 phy's changes to let BYEBDOS systems to gain time on system. (Note: Must be using BYE338 for this to work properly. If you are running BYE337, please upgrade to v338, as v338 cor- responds to the documentation and changes the way one of the BYEBDOS call functions works). - Paul Traina ---------------------------------------------------------------------- 08/10/85 Fixed a bug in the "turkey patch" that could cause double v11.5 entries in the log file for uploads or worse. Eliminated "thru packet " in message to console that is unnecessary and was leaving last packet number on console screen at end of downloads if a file is sent which requires small packets at the end. Also I fixed the version number. (This is #11.5 not 1.15 or 115.) Incorporated code from John Hoffman's 11.3 update and Steve Sanders' 11.4 update to bring out one version with all bugs fixed and features together again (I hope). Made some of Steve's feature patches optional. (DSPFNAM for display file name option, MBYE37 equate renamed to MBYETOS.) - Kim Levitt ---------------------------------------------------------------------- 08/10/85 Steve Sanders' version. (Did not include v113 updates.) v11.4 LUXMOD equate added so XMODEM can be configured to work as a LUXMODEM program. XM-FNAM2.ADD patch added to display se- lected file name on downloads and uploads so user can verify system didn't get garbage for the filename. Fixed TAGLBR option to work correctly. Misc. cleanup up and changes. - Steve Sanders ---------------------------------------------------------------------- 08/09/85 This version does not add any new features, what it does is v11.3 is to get all of the known patches together in one place so that future revisions of this program, will eliminate the problem, of seeing what patches, and fixes have been carried through. - John Hoffman ---------------------------------------------------------------------- 07/16/86 1) Added universal I/O option for users of Bye > 3.37 if v11.2 BYEBDOS is set, then a large section of equates are not used. At the current time, xmodem expects you to have a RTC if BYEBDOS is set. 2) Added in fixes from XMDM110.FX2, thanks for the patch. My appologies to the people I messed up. Courtesy of: Steve Saunders, Richie Dervan, Ron Mani. 3) Re-wrote options selection section. Talk about spaghetti code. It's much cleaner now, adding function "RX". 4) 1k request ignored if user is calling in at 300 baud. 5) If user types "R" - system sends "CK" instead of "C". This is transparent to all present modem programs other than ProYAM for MS-DOS 16-bit computers. With ProYAM, when uploading a file, the first block will have to be resent, or the user can type "RX" to disable this auto- protocol select flag. This change does not affect the current "1k" protocol, it's really a great idea...cour- tesy of Irv Hoff. 6) Local console display mimicks MEX114 in 1k mode. - Paul Traina ---------------------------------------------------------------------- 07/21/85 1) Reincorporated the use of ERRCDE, which had been partly v11.1 ially removed from the program, as an assembly time op- tion. The external overlay passes a code in Reg. A when a parity, overrun or framing error is detected. Other- wise Reg. A=0. This could be important to some users who may be using checksum instead of CRC. 2) Added a version (last edit) date, which appears when the program signs-on. 3) Compressed the help/example screen 4) Added routines for a BIOS, binary clock at GETTIME & GETDATE - Don Brown ---------------------------------------------------------------------- 07/20/85 1) corrected send time for 1k packets to be more accurate. v11.0 XMDM110 looks to see what block size we use. (Thanks go to Irv Hoff for the table entries.) 2) changed send-time to print "mm:ss" instead of "mm mins, ss secs" 3) Removed equate OLDRBBS, not necessary because LASTCALR FCB looks for any file with the firstname of "LASTCALR". 4) Changed MBRTC to B3RTC (and sub-equates) because BYE335 and newer have compatible RTC capability. 5) Added an equate "OXGATE". If B3RTC (previously called MBRTC) or RTC is set to true, then OXGATE equate takes effect. This equate tells the system to stop reading data from the last caller file after the second comma. (The date was getting printed twice. - Paul Traina ----------------------------------------------------------------------