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dos_compilers/Digital Research CB-86 v2/READ.ME

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Digital Research CB-86 v2.0
2024-06-30 20:56:20 +02:00
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| ================================================ |
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| | ***** CBASIC Compiler (CB86) ***** | |
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| | for the IBM Personal Computer | |
| | Disk Operating System | |
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| | --------------- | |
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| | READ.ME File Notes | |
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| | - June 1983 - | |
| | | |
| | Digital Research Inc. | |
| | P.O. Box 579 | |
| | Pacific Grove, CA 93950 | |
| | | |
| ================================================ |
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| This file presents enhancements and modifications |
| made to CBASIC Compiler software and documentation. |
| Changes described in this file apply to CBASIC |
| Compiler (CB86) Version 2.0 and supercede existing |
| product documentation. |
| |
| You can print the information in this file on your |
| line printer using 8 by 11 inch paper with the |
| printer set to 6 lines per inch. You can trim the |
| pages along the dotted lines and place the pages |
| in your product documentation binder. |
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| CBASIC Compiler (CB86) READ.ME File Notes June 1983 |
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| Table of Contents |
| ================================================ |
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| Escape Sequences and Function Keys . . . . . 1 |
| CHAIN Statement . . . . . . . . . . . . . . . 2 |
| DATE$ Function (NEW!) . . . . . . . . . . . . 3 |
| TIME$ Function (NEW!) . . . . . . . . . . . . 4 |
| Graphics Extension Error Messages (NEW!) . . 5 |
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| ================================================ |
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| CBASIC Compiler (CB86) READ.ME File Notes |
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| Escape Sequences |
| ================================================ |
| |
| IBM Personal Computer DOS Version 1.1 does not |
| interpret ANSI standard escape sequences. |
| Therefore, programs that attempt to handle screen |
| displays using escape sequences for cursor control |
| do not execute properly. |
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| Function Keys |
| ================================================ |
| |
| This release of CBASIC Compiler does not support |
| the function keys on the IBM Personal Computer |
| keyboard. When you press a function key, a |
| two-character sequence consisting of a zero and a |
| second character is sent to the computer. CBASIC |
| Compiler does not detect the leading zero. |
| Therefore, any use of a function key in a CBASIC |
| program will fail. Function keys are interpreted |
| as regular keys within a CBASIC program. |
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| Page 1 |
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| CBASIC Compiler (CB86) READ.ME File Notes CHAIN Statement |
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| CHAIN Statement |
| =============================================== |
| |
| The CHAIN statement loads another program into |
| memory and starts execution. |
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| Syntax: CHAIN <filespec> |
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| Explanation: The CHAIN statement can load two types |
| of programs - an overlay program generated by the |
| linker, or a directly executable file. CHAIN can |
| load files generated by languages other than CBASIC. |
| However, before you chain to an overlay file, the |
| linker must create that overlay and the root |
| program at the same time. |
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| The filespec can be a string expression, a variable, |
| or a constant. |
| |
| When a program chains to a second program, all open |
| files in the original program are closed and all |
| data is reinitialized to 0. Refer to the |
| Programming Guide for more information on chaining |
| modules and programs. |
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| Examples: CHAIN "B:AVERAGES" |
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| CHAIN NEW.PROG$ |
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| TOTALS$ = "ACCOUNTS.OVL" |
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| CHAIN CDRIVE$ + TOTAL$ |
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| Page 2 |
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| CBASIC Compiler (CB86) READ.ME File Notes DATE$ Function |
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| DATE$ Function |
| =============================================== |
| |
| The DATE$ function returns a string indicating the |
| current year, month, and day set through the |
| operating system. |
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| Syntax: a$ = DATE$ |
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| Explanation: DATE$ returns a six character string |
| in the form YYMMDD. YY is the last two digits of |
| a year reference, such as 84 for 1984. MM is one |
| of twelve digit combinations representing the |
| month such as 02 for February or 11 for November. |
| DD is one of thirty-one digit combinations |
| representing the day of the month. The string that |
| DATE$ returns is undefined if the operating system |
| is set to a date later than December 31, 1999 or |
| earlier than January 1, 1978. |
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| If your operating system does not support time and |
| date functions, the CBASIC DATE$ function returns |
| a string consisting of six blanks. Refer to your |
| operating system manuals to see if your operating |
| system supports time and date functions. |
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| Example: CURRDATE$ = DATE$ |
| PRINT "Today's date is: "; CURRDATE$ |
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| Page 3 |
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| CBASIC Compiler (CB86) READ.ME File Notes TIME$ Function |
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| TIME$ Function |
| ================================================ |
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| The TIME$ function returns a string indicating the |
| current time of day. |
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| Syntax: a$ = TIME$ |
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| Explanation: TIME$ returns a six character string |
| of the form HHMMSS. HH is one of 24 digit |
| combinations representing the hour, such as 06 for |
| 6:00 AM or 15 for 3:00 PM. MM is one of sixty |
| digit combinations representing the minute. SS is |
| one of sixty digit combinations representing the |
| second. |
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| If your operating system does not support time and |
| date functions, the CBASIC TIME$ function returns a |
| string consisting of six blanks. Refer to your |
| operating system manuals to see if your operating |
| system supports time and date functions. |
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| Example: CURRTIME$ = TIME$ |
| PRINT "The current time is: "; CURRTIME$ |
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| Page 4 |
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| CBASIC Compiler (CB86) READ.ME File Notes Graphics Errors |
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| Graphics Extension Error Messages |
| ================================================ |
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| The following error messages indicate compilation |
| errors that can occur during compilation of a |
| graphics statement in a program. Compilation |
| continues after the error is recorded. |
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| Error numbers 180 through 240 inclusive are |
| reserved for use with the CBASIC Compiler |
| graphics extention. |
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| Error Meaning |
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| 180 A left parenthesis is missing. A left |
| parenthesis is inserted. |
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| 181 A right parenthesis is missing. A right |
| parenthesis is inserted. |
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| 182 A comma is missing in a PLOT statement. |
| A comma is inserted. |
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| 183 The keyword STYLE is missing in a SET or |
| ASK statement. STYLE is inserted. |
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| 184 A comma is missing in a SET statement. A |
| comma is inserted. |
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| 185 The keyword HEIGHT is missing in a SET or |
| ASK CHARACTER statement. HEIGHT is |
| inserted. |
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| 186 The keyword ANGLE is missing in a SET or |
| ASK TEXT statement. ANGLE is inserted. |
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| 187 A comma is missing in a SET or ASK WINDOW |
| statement. A comma is inserted. |
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| Page 5 |
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| CBASIC Compiler (CB86) READ.ME File Notes Graphics Errors |
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| 188 A comma is missing in a SET or ASK |
| VIEWPORT statement. A comma is inserted. |
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| 189 The keyword PAGE is missing in a SET |
| statement. PAGE is inserted. |
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| 190 Not used. |
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| 191 The keyword COUNT is missing in a ASK |
| STYLE statement. COUNT is inserted. |
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| 192 A comma is missing in an ASK statement. |
| A comma is inserted. |
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| 193 Not used. |
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| 194 Not used. |
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| 195 The keyword COUNT is missing in a SET |
| COLOR statement. COLOR is inserted. |
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| 196 Not used. |
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| 197 Not used. |
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| 198 Not used. |
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| 199 Not used. |
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| 200 Not used. |
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| 201 Not used. |
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| 202 Not used. |
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| Page 6 |
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| CBASIC Compiler (CB86) READ.ME File Notes Graphics Errors |
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| 203 A comma is missing in an GRAPHIC statement. |
| A comma is inserted. |
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| 204 The keyword following GRAPHIC is unexpected. |
| INPUT is inserted. |
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| 205 A left parenthesis is missing in a GRAPHIC |
| statement. A left parenthesis is inserted. |
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| 206 A right parenthesis is missing in a GRAPHIC |
| statement. A right parenthesis is inserted. |
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| 207 A colon is missing in a GRAPHIC statement. |
| A colon is inserted. |
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| 208 The variable in an ASK statement is of type |
| real or string. An integer variable is |
| required. |
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| 209 The variable in an ASK statement is of type |
| integer or string. A real variable is |
| required. |
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| 210 The variable in an ASK statement is of type |
| integer or real. A string variable is |
| required. |
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| 211 Not used. |
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| 212 Not used. |
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| 213 Not used. |
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| 214 Not used. |
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| 215 Not used. |
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| Page 7 |
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| CBASIC Compiler (CB86) READ.ME File Notes Graphics Errors |
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| 216 A comma is missing in a GRAPHIC statement. |
| A comma is inserted. |
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| 217 The variable in a MAT statement is of type |
| integer or string. A real variable is |
| required. |
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| 218 Not used. |
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| 219 Not used. |
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| 220 Not used. |
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| 221 The keyword following MAT is unexpected. |
| FILL is inserted. |
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| 222 A colon is missing in a MAT statement. A colon |
| is inserted. |
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| 223 An identifier is missing in a MAT statement. |
| An identifier is inserted. |
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| 224 A comma is missing in a MAT statement. A |
| comma is inserted. |
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| VVVVVVV |
| VVVVV |
| VVV |
| VVV |
| VVV |
| VVVVV |
| VVV |
| V |
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| END OF READ.ME FILE |
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| Page 8 |
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