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SIG/M volume 16 miscellaneous CP/M utilities number name size description 16.1 BYE67.ASM 39K remote console program for PMMI 16.2 BYE67.DOC 12K / 16.3 MLIST42.ASM 12K multiple file list utility 16.4 DU-V75.OBJ 6K disk utility system 16.5 DU-V75.DOC 5K / 16.6 DU-V75.ASM 40K / 16.╖á FINDBD42.AS═á 33╦ create≤ filσ oµ badspot≤ 16.8 APLMODEM.ASM 36K CP/M file transfer for Apple 2 using DC Hayes Micromodem 2 16.9 COMAND.LIB 7K console string processor 16.10 COMBINE.ASM 7K merges multiple files 16.11 FILE-XT2.ASM 8K system disk utility display 16.1▓ MNEMON21.AS═ 28╦ multi-pas≤ CP/M memory tester NOTE: The major enhancement of version 6.7 of BYE is that a single source file now contains conditional assemblies to control either PMMI or D C Hayes modem cards. Otherwise, this doc- umentation is essentially the same as that for version 6.3, with the addition of some minor fixes and improvements. BYE67.ASM DOCUMENTATION The BYE program for PMMI and D C Hayes modems has undergone three significant revisions in recent months, and many features and options have been added. This documentation is intended as a guide for sorting through the many additional items. Most of the new features have been added via conditional assembly, thereby allowing the program to accomodate users with varying memory re- quirements. Note that not all combinations of conditional assembly have been tested, so be careful! DOCUMENTATION OF REVISION 6 =========================== The following features have been added to revision 6: 1) Timed logout- This feature allows your system to disconnect after a pre-specified time when there is no input from the remote user. ==> Set "TIMEOUT" to "true". ==> Set "TOVALUE" to the number of minutes to wait before disconnecting. This feature requires that timing now be done in software, instead of using the PMMI timing circuitry, which is tied up with baud rate gen- eration when the system is in use. Therefore, you must set the equate "FASTCLK" to true if you are running a 4mhz system, and to false if you are using 2Mhz. You must do this even if you don't use the timed logout feature. 2) Autoload- Setting "COMFILE" to true causes the bye program to auto- matically load and execute a machine language program from the disk. This is useful for remote bulletin-board systems, remote query and data entry, etc. If you are using cp/m 2.x (equate "CPM2" set true), you must specify which user number to load this file from. This is done by setting the equate "COMUSR". Note that this user number will also be the one under which the autoload program is executed. The loaded program can prevent the remote user from re-booting the system by changing the byte at 0 (jmp instruction) to a call. When this is done, the system will trap control-c from the remote user (changing the character to a null), and a branch to location 0 (warm- boot) will terminate the session, as if "bye" had been typed by the user at cp/m command level. This allows the autoload program to end the session by merely branching to location 0. If it is necessary to give the user full control of cp/m, the auto- load program must replace the call at zero with a jump. In this case, control-c will no longer be trapped, and "jmp 0" will warm-boot the system. NOTE: The system operator can answer an incoming phone call in either of two ways: A>BYE /C ;this form causes the bye program to answer the phone, prompt the user for nulls, then load and run the autoload program. A>BYE /A ;this form causes the program to answer the phone, then boot to cp/m command level. Note that either method will, upon termination of the session, re-load the autoload program before accepting another call. 3) User and drive number verification- The bye program will now validate the logged-in drive, and, if it exceeds the value set by the equate, "MAX$DRIVE", the system will reset the logged-in drive to 0 and perform a warm-boot. If you are using cp/m 2.x ("CPM2" equate set to true), the same verification will be done for the logged-in user number. The equate in this case is the variable "MAX$USER", which should be set to 0 for cpm 1.x. 4) Special function keys- You can assign any three key-codes on the local keyboard for the following special functions (Note that you should also select the DUAL$IO mode along with these options): "TWITKEY" - This key immediately logs out a user. This can be useful to remove system crashers, "explorers", etc. from the system. "MSGKEY" - This key prints the message: "MESSAGE FROM OPERATOR:", which can be used to announce operator presence, prior to typing a message to the remote user. "SYSDKEY" - This key prints the message: "SYSTEM DOWN IN 5 MINUTES", which is handy when you want to drop a hint to a caller who has worn out his welcome. (or just when you want to politely get the system back for yourself). Note that the conditional assembly for these keys is set by the equate "FKEYS". The key-codes can be individually changed. 5) Decimal user logs - If you use the USRLOG functions (see revision 5 section of this documentation file), setting the "DECIMAL" equate to true provides a decimal printout of the user log values, instead of the default hexadecimal printout. 6) Lower case checking - By setting the "CK$LWC" equate to true, the user will be asked at sign-on if his terminal can display lower case. If the user responds with "N", all output will be converted to upper case before transmission. 7) If you have an IMSAI (or any computer with an input port set by switches), setting the "IMSAI" equate to true provides the following capablities: switch function 0 turns on the hardcopy log ... this echoes remote input (not output!) onto the printer. This provides a hardcopy logging function with minimal amount of printout..i.e., only the users' input is echoed. 1 sets up "password mode"...when this switch is up, any- one trying to log onto the system must provide a pass- word. This allows you to reserve the system at times for special callers. Note that the "PWRQD" equate must be set to true for this key to have any affect. 2 blacks out the remote user...this is useful when you need to enter a password into the machine that you'd rather the remote user not see. Characters echo onto the local terminal, but are not sent to the remote user. Note that the equate "DUAL$IO", which allows the local terminal to be functional, must be set to true for this key to have any effect. 3 enables the FKEY's, when the "FKEY" equate is set to true. Using this switch, the special function keys can be used normally when the switch is off, and as function keys when the switch is up. Also: the user log (if USRLOG is set to true) will be displayed on the front panel LED display. The port address of the front panel I/O port can be changed using the "SENSE" equate. It is initially set up for the IMSAI addressing, which is port 0FFH. 8) The console status routine now checks the overrun and framing error bits of the PMMI modem chip, and if either of these bits is set, the character in the modem is cleared. Thanks to Bruce Ratoff who used this idea in his DC Hayes version of the bye program. 9) Since the WELCOME file may reside on a different user number than the autoload program (if any), the WELUSR equate has been added to indicate the user number under which WELCOME may be found. Note that if the COMFILE option is not also used, the caller will receive control of the system under user number WELUSR. Credits: (version 6.3) Dave Hardy, who implemented the special function keys, and IMSAI functions for the Technical CBBS, Dearborn, Mich (313-846-6127 24Hr). Bruce Ratoff, who provided a lot of this stuff in his DCHBYE54, which I lifted and added to the PMMI version. Keith Petersen, who provided the ideas and suggestions. ====>Ron Fowler Sept 24, 1980 Credits: (version 6.7) Dave Kozinn, who had the time and patience to merge the D C Hayes code into PMMIBY63, creating (at long last) an "universal" BYE. ====>Bruce Ratoff Feb 17, 1981 DOCUMENTATION OF REVISION 5 =========================== PMMIBYE5.DOC (as of 7/20/80) The PMMIBYE5.ASM program is out for distribution, but it has not been thoroughly tested in all of the possible modes of operation. (Please note that version 5.4 is substantially longer than previous PMMIBYE versions. Because of the great number of conditional switches, the program could require as many as 1060 bytes of RAM, or it could be smaller than the 900 bytes used by the original PMMIBYE. It all depends on the way you set it up.) Basically, several new conditional assembly routines have been added to allow user selection at time of assembly of the following: 1. Password access 2. User log (counts number of system callers) 3. Memory-mapped console I/O Also added to V5.4: 1. 710 Baud option for PMMI modem 2. Modifications to AUTO-ANSWER routines 3. "/R" option to allow reset of user log counters Password access was made conditional to allow use with systems that offer unrestricted access. The user log was added to allow the system operators to keep track of the number of people who called the system. In addition, it can also count the number of unsuccessful log-ons (i.e. didn't know password) and the number of voice calls, and conditionally display both numbers on the system console when the program is exited with a control-C from the system console. The counters can be initialized with the "/R" option to all zeroes, or preset by using DDT, or SID. The number of successful log-ons is also conditionally output to port 255 (0FFH) for display on the computer's front panel. The memory-mapped I/O conditionals have been added to allow use of the serial I/O port on the Morrow's 2D controller board as the system console; however, the routines can be used with any memory-mapped system. The 710 Baud option was added for "short-haul" callers, and because operation at 710 Baud with the PMMI modem is "iffy" at best, it will probably be of very little use. The AUTO-ANSWER routines were modified to allow more dependable ringback operation. Unfortunately, the ringing signal at the caller's end of the phone line does not always correspond exactly with the ringing signal at the system's end. Although a system-end ring does occur sometime during the caller's ring cycle (ring-no ring), it is possible for the system to receive no or 2 rings in the time that the caller thinks just one ring has occurred (The DIAL program is notorious for this). The solution chosen for this problem was to check for one or two rings before call-back. This would allow for the "phase" difference of the caller-system ring signals. This solution also means that the phone must ring at least three times before the system will assume that the call is voice, and is not to be answered. The advantage of this arrangement is that it is virtually impossible for the computer to "miss" a call that is intended for it. Dave Hardy DU-V74.DOC by Ward Christensen with additional notes by Ron Fowler (revised 1/15/81) HOW TO USE DU ver 7.4 DISK UTILITY INSTALLATION: The 7.0 and later versions of DU are designed to be installed with a minimum of trouble. In fact, in al- most all cases, no changes to the source file should be necessary to get DU up and running. This is because DU uses the disk paramter block of CP/M to determine the characteristics of the disk environment. (see the dis- claimer for certain non-standard versions of CP/M 1.4). The only parameter that should need to be changed will be the clock speed flag at 103H. Leave this byte zero if you have a 2 mhz clock. Patch it non-zero for 4 mhz. This is only needed for the "Z" (sleep) command. USE: Any valid command string may be placed as an operand of the original DU command, i.e.: A>DU G0;D;G2;=OK<D><A><1A>;D Functions supported: Tnn Seek to track nn (no read) Snn Position to sector nn, and read Gnn Position to group nn and read. G Shows current position V Views the current sector. (assumes ASCII data) Vnn Views nn sectors Fname print directory for file "name", then positions to it's directory sector. (Won't position under CP/M 2.x, but see = command below.) =string Ascii search, starting at current sector. <xx> hex may be imbedded, or used alone: To find "IN 0FEH": =<db><fe> Ignores bit 7 unless <xx> is used. L Re-logs in the current disk. You may pull out a disk, put in a new, and "L" just to log it in. Lx Logs in disk 'x', such as: LB Ux Logs user 'x' for next F command. Gives '?' error if not CP/M version 2.x. D Dump sector, hex + ASCII A Dump sector, ASCII only H Dump sector, hex only note all dump commands (D, A, H) may be optionally followed by a starting and ending address: D0,7F is the same as just D D3,5 A20,3F CHaddr,val,val,val... change hex in sector CAaddr,char string... change ASCII in sector NOTE that <xx> may be hex imbedded in the Ascii: ca0,OK<d><a><1a> ----> Use W to write changes to disk. Note that the C command echoes the overlaid data for verification. CHaddr-addr,byte or CAaddr-addr,byte repeats a change + advance 1 sector (if below track 2, this advances to next numerical, if 2 or >, advances based on CP/M's normal sector scrambling algorithm, i.e. so + will get the next logical sector of the file - backs up 1 logical sector Note + and - may take an amount: for example, +F steps in 15 sectors. Note also that "-" issued at the first logical sector of the disk will wrap back to the last. Further, "+" issued at the last sector will wrap forward to the first. ? Gives command summary # Prints the disk parameters M Dumps a map of the group allocations for files. Mn Shows which file is allocated to group "n". N Resets CP/M via the BDOS. This may make it possible under some implementations of CP/M to change the disk format (e.g., density, sides, etc) R Reads the sector currently positioned to into memory. Note R (Read) is implicit in the G, +, and - commands, but N-O-T in the S and T commands (I did it because I was tired of disk reading after T command before I had a chance to issue the S command) W Write back the current sector (N-O-T-E may not be used after an F command, as CP/M was used to find the file in the directory X Exit back to CP/M (Must press return). Ctl-c was too easy to hit over modem lines, so I decided on 2-byte (X, CR) to exit. P Toggle printer switch on/off Z Sleep - causes the program to pause, such as to look at a dump. Z is 1 sec. Znn is nn tenths of a second on a 2 MHz 8080. < Saves current sector in a save buffer > Gets saved buffer. < and > may be used to move a sector to another place. / Repeats entire command. Defaults or /nn to "forever". NN may be 2 to 65535 multiple commands may be separated by ";" Example: the following commands will erase the b disk directory to all E5's: lb log in b drive g0 position to dir. ch0-7f,e5 fill with e5 < save the sector >;w;+;/16 restore, write, next, repeat 16 ----This could be shortened to: lb;g0;ch0-7f,e5;< >;w;+;/16 END