A machine with QuickBASIC 2.01 diskettes loaded in drives A: and B: is provided below, along with Directory Listings of the original 360Kb diskettes.
[PCjs Machine "ibm5160-msdos320"]
Waiting for machine "ibm5160-msdos320" to load....
Volume in drive A has no label Directory of A:\ BUG BAS 397 2-17-86 3:34p CALLSHAP BAS 133 4-25-86 10:00a DEMO BAS 211 6-10-86 9:47a EX BAS 182 4-25-86 10:01a PPRINT BAS 23149 12-01-86 1:57p QB EXE 190528 1-16-87 11:45a INT86 ASM 17865 12-26-86 5:52p REMLINE BAS 12913 6-19-86 7:12a SQUARE BAS 164 12-04-86 12:11p TRIANGLE BAS 250 4-25-86 10:03a UPDATE DOC 9187 1-13-87 12:32p TANDY QBK 1973 11-23-86 11:31p ABSOLUTE ASM 728 12-26-86 5:46p README DOC 24197 1-16-87 6:20a 14 file(s) 281877 bytes 72704 bytes free
Volume in drive A has no label Directory of A:\ BCOM20 LIB 178176 1-16-87 11:44a BRUN20 EXE 69454 1-16-87 11:44a BRUN20 LIB 5120 1-16-87 11:44a BUILDLIB EXE 45440 9-29-86 3:14p GWCOM OBJ 2992 1-16-87 11:44a INT86 OBJ 520 1-10-87 5:32p PREFIX ASM 1168 5-14-86 10:54a PREFIX OBJ 410 5-14-86 12:11p SMALLERR OBJ 243 1-16-87 11:44a LINK EXE 47896 3-14-86 3:16p ABSOLUTE OBJ 104 1-10-87 5:32p 11 file(s) 351523 bytes 6144 bytes free
"README.DOC" File Release Notes for the MICROSOFT QuickBASIC Compiler (Version 2.01) for IBM(R) Personal Computers and Compatibles (C) Copyright Microsoft Corporation, 1986, 1987 THIS FILE CONTAINS IMPORTANT INFORMATION CONCERNING VERSION 2.01 OF THE MICROSOFT(R) QUICKBASIC COMPILER. PLEASE READ THE ENTIRE FILE VERY CAREFULLY BEFORE USING YOUR QUICKBASIC PRODUCT. This file is divided into three parts, as follows: PART CONTENTS 1 Information on three NEW features added to the Version 2.01 release: - Descriptive error messages when you compile using the separate compilation method. - Installable keyboard drivers for better support of the Tandy(R) 1000 and the IBM Advanced 101-Key Keyboards. - The ENTER key may now be used to select command buttons other than the default. 2 Information about additions and changes to QuickBASIC made after the manual was printed. 3 Additions and corrections to the QuickBASIC Version 2.0 manual. For information on corrections to the software from version 2.00 to 2.01, please refer to the UPDATE.DOC file on this disk. ===<Part 1: QuickBASIC V2.01 Enhancements>========================= 1. Error Listings New to Version 2.01 are descriptive error messages that may appear when you compile with the separate compilation method (see Appendix D of the QuickBASIC Manual for more information on using the separate compilation method). You can redirect these error messages to a file or device to get a printed copy of the errors encountered during compilation. EXAMPLES COMMAND LINE ACTION ------------ ------ QB TEST.BAS; compile TEST.BAS and display any errors encountered on the screen. QB TEST.BAS; > TEST.LST Compile TEST.BAS and redirect any error messages generated to the file TEST.LST. 2. Machine-specific keyboards QuickBASIC Version 2.01 has been enhanced to allow installation of machine-specific keyboards. When invoked, QuickBASIC searches the entire path, beginning in the current directory, for a file named KEYBOARD.QBK. If found, it is used as the keyboard definition; if not found, the default IBM keyboard is used. Since QuickBASIC Version 2.01 comes already installed for the standard IBM and IBM Advanced 101-Key Keyboard, most owners of IBM PCs and close compatibles need not worry about keyboard compatibility. However, owners of Tandy 1000s should rename the file TANDY.QBK (located on Disk 1) to KEYBOARD.QBK. Note that this keyboard installation only affects the QuickBASIC editor, and has no effect at runtime. 3. Executing Command Buttons in Dialogs In QuickBASIC Version 2.00, pressing ENTER always executed the default command button, regardless of which button was highlighted. This feature has been enhanced in QuickBASIC Version 2.01. Pressing ENTER now executes the default button ONLY if another command button is not highlighted. For example, if the highlight is on the CANCEL button then pressing ENTER will execute CANCEL. However, if the input focus (highlight) is an edit field or a checkbox then ENTER causes the default command button to be executed. ===<Part 2: Additional Information>=================================== 1. The QB.INI Initialization File QB.INI is an initialization file that QuickBASIC uses to set both the Options settings in the View menu and the Autosave command settings in the File menu. Upon exiting QuickBASIC, if you have modified any of the Options settings or the state of the File menu Autosave command, these changes are written to QB.INI. Note that QB.INI is not supplied on any of the product disks. It is created only when you change the Options or Autosave settings. If you use only the default settings, QB.INI is never created. When QB.INI is created, it is placed in the current directory. When QuickBASIC starts, it looks for QB.INI in the current directory, then in the locations specified by the PATH environment variable. 2. Source-File Line Termination QuickBASIC 2.0 requires a CR-LF (carriage return-line feed) sequence at the end of each line. If only carriage returns are present, QuickBASIC reads the first 255 characters only, and continues without producing an error message. If only line feeds are present, QuickBASIC will appear to read the file correctly, but the last character of each line will be missing. If you use an editor that places only a CR or an LF at the end of a line, you need to modify your source files so they have the correct sequence at the end of each line. The following program examines the end of each line in a file and inserts a carriage return, line feed, or both, if needed. DEFINT A-Z cr = 13 : lf = 10 More: CLS INPUT "File (.BAS) ", inpfile$ ON ERROR GOTO NoFile NAME inpfile$ + ".BAS" AS inpfile$ + ".BAK" OPEN inpfile$ + ".BAK" FOR INPUT AS #1 ON ERROR GOTO 0 OPEN inpfile$ + ".BAS" FOR OUTPUT AS #2 prevcr = 0 WHILE NOT EOF(1) filechar$ = INPUT$(1, #1) IF ASC(filechar$) = cr THEN prevcr = 1 ELSEIF ASC(filechar$) = lf AND prevcr THEN prevcr = 0 ELSEIF ASC(filechar$) = lf AND NOT prevcr THEN PRINT #2, CHR$(cr); ELSEIF prevcr THEN prevcr = 0 PRINT #2, CHR$(lf); END IF PRINT #2, filechar$; WEND CLOSE PRINT "Another file (Y/N)?" more$ = INPUT$(1) IF more$ = "y" OR more$ = "Y" THEN GOTO More ELSE SYSTEM END IF NoFile: number = ERR IF number = 53 THEN CLS PRINT "No such file. Press any key to continue." z$ = INPUT$(1) RESUME More ELSE ON ERROR GOTO 0 ERROR number END IF 3. Compilation Errors When an error is detected during compilation, code generation stops. This allows for faster compilation, but has the side effect that some errors may be reported that are not errors. When the original error is corrected, these side-effect errors go away. For example, the statements FOR I = 1 . . . NEXT I generate two errors, "Missing TO" and "NEXT without FOR". When the FOR statement is changed to read "FOR I = 1 to 10", both errors are corrected. 4. COMMAND.COM, the SHELL Statement and the Shell Command QuickBASIC requires COMMAND.COM before it can execute either a SHELL statement or the Shell command from the File menu. QuickBASIC first looks for COMMAND.COM in the directory specified in the COMSPEC environment variable, then in the current directory. 5. Using SHELL in a Subroutine The SHELL statement does not compress memory. If not enough contiguous memory is available, (for example, if many CHAIN statements have been executed, or several dynamic arrays were allocated then erased), a SHELL statement may fail with an "Out of memory" memory error. 6. Using the SHELL Statement with DOS 2.X If you are using a 2.X version of DOS, programs that contain SHELL statements may not exit correctly. This is due to a known problem in DOS 2.X. The problem occurs when DOS reloads the transient portion of the command processor into high memory. To exit QuickBASIC after executing an in-memory program that contains SHELL statements, when the program finishes running, choose Shell from the File menu, then type "exit" at the DOS prompt. When standalone executable programs exit, the message "Invalid COMMAND.COM" may appear. If so, you must restart your system. If you compile using BRUN20.EXE the program, in most cases, exits properly. Another solution is to upgrade your DOS version to 3.X. 7. Running Terminate-and-Stay-Resident Programs from the File menu Shell Do not run terminate-and-stay-resident programs while executing the Shell command from the File menu. When a Shell command is executed, QuickBASIC is compressed into the smallest memory possible. The terminate-and-stay- resident program occupies memory required by QuickBASIC, making it impossible to compile or run a program, or do anything that allocates memory. 8. Changing directories from the File menu Shell Command If you change directories after executing the Shell command from the File menu, this directory is the current directory when you return to QuickBASIC. Subsequent Load commands will use this as the default directory, and when you quit QuickBASIC, you will be in this directory. 9. Notes on using User Libraries The run-time module BRUN20.EXE obtains the user library using the name the program module was compiled with. All independently compiled program modules that will be linked together must have been compiled with the same user library using the same name, or an error occurs at run time. CHAINing from a program that has a user library loaded REQUIRES that the CHAINed-to program is compiled with the same user library. 10. Using /l with Nonreferenced Libraries User libraries specified with the /l option are pulled into the executable file regardless of whether the program requires them. 11. The User-Library Search Path If path information is provided with the qb command's /l option, as in qb progname /l \src\lib\mylib.exe no path search is performed. If the library is not in the specified location an error occurs. If no path information is provided, the current directory is searched, then the directory specified in the LIB environment variable. 12. Graphics-Mode Statements A graphics-adapter card is required if you are using any of the following statements: CIRCLE PMAP COLOR (screen modes 1-10) POINT DRAW PRESET GET (graphics) PSET LINE PUT (graphics) PAINT VIEW PALETTE WINDOW PCOPY 13. EGA-Card Restrictions The EGA card does not support the COLOR statement's border parameter. Using the border parameter causes unpredictable results. QuickBASIC does not support 43-line mode. 14. Program Capacity Because the Debug option generates extra code, extremely large programs that are compiled with the Debug option may exceed the memory limits of your computer. 15. Object-File Size Programs compiled with the Debug option (the default) create larger object files than programs compiled without the Debug option. 16. Using the PEN Function when a Mouse Driver is Present The mouse driver intercepts the PEN function's BIOS calls and redirects them to the mouse. If you don't want to use the mouse as a lightpen, call mouse function 14 to disable the mouse's lightpen emulation flag, which is on by default. Mouse function 13 turns lightpen emulation back on. For example, the following code turns mouse lightpen emulation off: CALL MOUSE(14,0,0,0) See your mouse manual for more information. 17. Editing Responses to the INPUT Statement The input editor supplied with QuickBASIC is a line editor only. This means you can move and edit only horizontally. Attempts to use the UP, DOWN, PGUP and PGDN cursor keys produce a beep. 18. Disk-Error Messages Whenever you get a disk-error message, such as "Write protect violation", DO NOT change to a different disk before selecting "RETRY". If you want to retry with a different disk, select the "Cancel" button, replace the disk, and compile again. 19. INT86.ASM, INT86.OBJ, ABSOLUTE.ASM, ABSOLUTE.OBJ In QuickBASIC Version 2.00 there was USERLIB.ASM and the assembled object, USERLIB.OBJ. USERLIB.ASM has been split into two files, INT86.ASM and ABSOLUTE.ASM. If you are using LINK.EXE to link user libraries to BRUN20.LIB, you should use only INT86.OBJ (the symbol "ABSOLUTE" is already contained in BRUN20.LIB). CALL ABSOLUTE is considered an external subroutine by the QuickBASIC compiler. If you are creating a new user library to incorporate your own assembly language routines, you will need to use both INT86.OBJ and ABSOLUTE.OBJ when creating the new user library. ===<Part 3: Corrections to the Manual>====================================== Page Correction ---- ---------- 65 In the top paragraph, you should use ALT-F8 to exit animate mode, as you are in animate mode when you enter the example. 71 In the syntax line at the bottom of the page, the "c:buffersize" option should be preceded by a forward slash, as follows: /c:buffersize 76 In the first paragraph after Figure 4.2, the sentence "If you are in a subdirectory..." should state that the entry ".." appears in the "upper-left corner", not the "upper-right". 78 Binary files cannot be loaded into QuickBASIC. The note in the middle of the page should read: QuickBASIC accepts only ASCII files. If you attempt to load a binary file, you will get an error. 93 In section 126.96.36.199, "Exe," it should be noted that the executable files created using this method require the support of the BRUN20 run-time module in order to execute. 120 The first line of this example (DEFINT I-L) should be changed to DEFINT I-S so as to execute correctly. 152 The stack is preset to 768 bytes, not 512. 161 In the example under Section 9.2.2, there should not be an underscore character (_) following the FIELD variable D$. 162 String constants can be ASCII characters in the range 32 to 126. (127 is the DEL character) 172 The discussion of overflow and division by zero is misleading. If you are running from the QuickBASIC user interface (editor), and the DEBUG option is on, when the error occurs the application terminates and you are returned to the editor, with the cursor positioned on the line where the division by zero occurred. If you do not have the DEBUG option selected, the application is terminated; however, when returned to the editor, the cursor is not positioned on the offending line. 183 In Table 10.1, in the column "May Require Modifying Interpreter Programs," you should add the statements PEEK, POKE, and DEFSEG, since the memory maps of the interpreter and the compiler are different. For example, programs that read from or write to memory locations in the RAM-resident portion of the interpreter do not work in the compiler environment since the interpreter is not present. 188 In Section 10.3.2, the $INCLUDE metacommand, restriction 2) is in error. Included files may contain END statements. 193 In Table 10.6, you should add the statements PEEK, POKE, and DEFSEG, since the memory maps of the interpreter and the compiler are different. For example, programs that read from or write to memory locations in the RAM-resident portion of the interpreter do not work in the compiler environment since the interpreter is not present. 200 In the Action section for the BLOAD command, it states that BLOAD can take input from "any input device." This is not true, as the BLOAD command does not take input from the "KYBD:" device. 222 The EGA card does not support the COLOR statement's border parameter. If you have an EGA card installed on your system, using the border parameter causes unpredictable results. 229 The list of nonexecutable statements should also include the DATA statement. 232 The "VO1" variable in the third line from the bottom should be changed to read as follows: DENS=W/VOL 235 The last line in the example should be "LOCATE Y,X" not "LOCATE X,Y". 265 The syntax for the ERASE statement should have a comma between the array names, as shown here: ERASE arrayname [,arrayname...] 275 In the FIELD statement's Example 2, the order of arguments is reversed for all string-manipulation functions. The affected section of the program should read as follows: . . . IF (ZCHECK$ > "85699" AND ZCHECK$ < "85801") THEN INFO$ = PLIST$ PRINT LEFT$(INFO$,25) PRINT MID$(INFO$,16,25) PRINT RIGHT$(INFO$,17) END IF The FIELD statements in the two examples shown under Example 4 should be changed to read as follows: FIELD #1, RECLENGTH% AS OFFSET$, SIZE% AS A$(I%) and FIELD #1, 15 AS A$(1), 10 AS A$(2),..., 8 AS A$(14) 283 In the FRE function example, the first line of the example should be a $DYNAMIC metacommand, as follows: ' $DYNAMIC PRINT "Before dimensioning arrays: " FRE(""),FRE(0),FRE(-1) . . . 286 There is a missing parenthesis in the formula for computing the GET graphics statement's array size. There should be three left parentheses after the INT keyword, as follows: 4 + INT(((x2 - x1 +1) * bits-per-pixel + 7)/8) * ((y2 - y1) +1) 297 The two examples comparing the single-line and block forms of the IF...THEN...ELSE statement should read as follows: Example 1: INPUT "Price = ",x IF (x >= 10000) THEN DISC! = x * .25! ELSE _ IF (x < 10000) AND (x >= 5000) THEN DISC! = x * .2! ELSE _ IF (x < 5000) AND (x >= 1000) THEN DISC! = x * .1! ELSE _ DISC! = 0 IF DISC! = 0 THEN PRINT "No discount" ELSE _ PRINT "Discounted price = "; : PRINT USING "$$####.##";x - DISC! Example 2: INPUT "Price = ",x IF (x >= 10000) THEN DISC! = x * .25! ELSEIF (x < 10000) AND (x >= 5000) THEN DISC! = x * .2! ELSEIF (x < 5000) AND (x >= 1000) THEN DISC! = x * .1! ELSE DISC! = 0 END IF IF DISC! = 0 THEN PRINT "No discount" ELSE PRINT "Discounted price = "; PRINT USING "$$####.##";x - DISC! END IF 299 The SUB/END SUB syntax is missing from the example. The following line should be added to the beginning of the example: SUB KeyboardAction(Timelimit%, Timeout%) STATIC The RETURN statement should be replaced by END SUB. 313 The last sentence of the description of Example 2, after the semicolon, should read: "The last line displays the new soft-key values." 314 The last entry in the table for the values of N, should be 15 - 20, rather than 15 - 25. 315 The table listed on this page is incomplete. In addition to the values listed, you must also take into account the state of the NUM LOCK and CAPS LOCK keys. For NUM LOCK active you should add the value &H20, and for CAPS LOCK active you should add the value &H40 to the keyboard flag. 317 The second comment in the example program should read: ' DOWN key will now be trapped 325 The STEP option example requires a hyphen before the STEP keyword, as follows: LINE -STEP (10,5) The phrase following the example should read: "draws a line from (10,10) to the point with x-coordinate 10+10 and y-coordinate 10+5, or (20,15)." 327 The Action for LINE INPUT should read: Inputs an entire line (up to 255 characters) to a string variable... 338 The Remark for LOF should read: When a file is opened in any mode, LOF returns the size of the file in bytes. 348 In the description of the example it should be noted that line 100 converts the single-precision variable AMT to a 4-byte string, then left justifies that string in an eight-byte field. 353 Delete the last sentence on this page. 369 Add the following note concerning the ACCESS clause: The ACCESS clause works in an OPEN statement only if you are using versions of DOS that support networking (3.0 or later). In addition, you must run the SHARE.EXE program (or the network startup program must run it) to perform any locking operation. Earlier versions of DOS will return an "Advanced Feature" error if ACCESS is used with OPEN. 375 The second sentence under the Action heading for the LF option should be changed to read: When LF is specified, a line-feed character (0AH) is automatically sent after each carriage-return character (0DH). 388 The last sentence in the REMARKS section should be deleted. The argument to the PEEK statement should be a single-precision variable in the range 0-1,048,575. 396 The variable in the first line of PLAY statement's Example 1 should be SCALE$, not SCALES$: SCALE$ = "CDEFGAB" 410 In the example, all references to the file STORINVENT should be changed to INVENT.DAT. The file argument to both OPEN statements should be the same file, INVENT.DAT. 418 The first entry in the "Arguments" column should be (x,y), not (x1,y1). 420 Images cannot be scaled with the PUT graphics statement. Only one set of x,y coordinates can be specified as arguments to PUT. All text after "Because you can specify..." in the second paragraph, and all of the following paragraph, should be ignored. 424 The second sentence in the Remarks section for the READ statement should be changed to read as follows: READ statements assign DATA-statement values to variables on a one-to-one basis. 448 In the description of the SCREEN statement's arguments, the first line under the SCREEN 2 heading should refer to high-resolution graphics instead of medium-resolution graphics, as follows: * 640 x 200 pixel high-resolution graphics In addition, the text format for SCREEN 1 should be 40 X 25, and the text format for SCREEN 2 should be 80 X 25. 474 The example for the STR$ function should read as follows: DEF FNNUM$(X) X$ = STR$(X) LENGTH = LEN(X$) IF LEFT$(X$,1) <> "-" THEN LENGTH = LENGTH - 1 FNNUM$ = RIGHT$(X$,LENGTH) END DEF PRINT "Enter 0 to end." : NUM = -1 'Corrected line WHILE NUM INPUT "Find cosine of: ",NUM IF NUM THEN PRINT "COS(" FNNUM$(NUM) ") = " COS(NUM) WEND 482 In the example, the input to the prompt "Pattern to be searched for?" must be SUB (not "sub") in order to get the output shown. 525 Add DEBUG, OFF, and RANDOM to the list of reserved words. Delete the dollar-sign ($) character at the end of GOTO. 535 Batch files created for versions of QuickBASIC before 2.0 require modification. In older batch files, "bascom" should be "qb". 536 If you are using a version of DOS earlier than 3.0, use the PATH command instead of the SET command to define the PATH variable. Using SET under earlier versions of DOS can cause the PATH variable to work incorrectly for some path specifications that contain lowercase letters. 546 & The stack is preset to 768 bytes, not 512. 547 566 The third bulleted remark ("A USR function...") should be deleted. 570 The explanation for the error message "Too many files" should read: This error most commonly occurs when an attempt is made to open a number of files that exceeds the limit set by the FILES= parameter in the CONFIG.SYS file. It also occurs when the per-directory file limit is exceeded by an attempt to create a new file with the SAVE or OPEN statement. Refer to your DOS manual for the number of files permitted in a directory.