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112 lines
4.2 KiB
Plaintext
112 lines
4.2 KiB
Plaintext
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Changes in CP/M-volksFORTH between Version 3.80 and Version 3.80a
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UH 04March88
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=============================================================================
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The original CP/M-VolksForth was incompatible with CP/M+. Because of the
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many version necessary to support the different CP/M Versions, a rework of
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CP/M-volksForth was neccessary. We have fixed some issues on the way.
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1. Changes in the Kernel (SOURCE.FB)
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* The Terminal-I/O has been reduced to a minimal set, so that the kernal
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is usable right away. The line editor has been moved out the kernal
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together with all "Terminal:" functions into the file XINOUT.FB
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* The kernel does not contain a fileinterface anymore, it uses the file
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that has been specified on the commandline (default-file). Usually this
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file contains the fileinterface which is loaded on the next step.
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* direct Disk-I/O is not supported by the kernel anymore, because it is
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not compatible with CP/M+. Diskaccess is only done via BDOS.
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* many functions of the kernel has been newly implemented in assembler,
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a new word "search" has been added that allows quick string searches
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with capitalization
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* the word CAPITALIZE has been replaced with the word UPPER. The word "exit"
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in NAME has been moved because of this.
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* the kernel prints its size in 256 byte pages when leaving. This can be used
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to dump the kernel to disk using the CP/M "SAVE" command (don't forget to
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make your changes in the Forth kernel with the forth word "save" first).
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* SAVE-BUFFERS has been extended by a deferred wird SAVE-DOS-BUFFERS to
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solve an issue with CP/M+
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* the deferred word POSTLUDE has been added. It is responsible for the
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last action before the CP/M warmstart (enable cursor, clear screen,
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print size of the kernel ...)
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* the command line from CP/M is now copied into the TIB (terminal input
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buffer) and can be interpreted from there. Using the "default-file" will
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however clear the TIB, so that this function can only be used after the
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fileinterface is loaded (DRVINIT does not open the "default-file" then)
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* the Interpret-Loop has been reworked and has been extended by the
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word PROMPT. The special word ">INTERPRET" has been removed. Its
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function is now done by the (normal) deferred word PARSER.
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* the Control-Structur words (IF, WHILE, ...) are now available
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outside word definitions (interactivly)
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* misc small changes
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2. Changes in the editor (EDITOR.FB, STRING.FB)
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* the tagging od screens has been fixed and it now works correctly
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with search/replace and with SHOWLOAD
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* VIEW has been changed, it no searched inside the word enclosed by blanks
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* the associative file is now displayed
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* when using search/replace, the screennumber is incremented on the
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screen to give a visual feedback of the search function
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* the string search is now implemented in the kernal, the other string
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functions has been moved into EDITOR.FB. STRING.FB has been removed.
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3. Changes in the Multitasker (TASKER.FB)
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* the word TASK has been changed: the constant is now defined before
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the task, it is now possible to forget a task with FORGET <taskname>
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* the PAUSE/WAKE/STOP flow has been changed, however there is no change
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in the usage
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4. Changes in the Fileinterface (FILEINT.FB)
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* The fileinterface has been reworked. Some errors have been removed and
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the names of many words have been changed to be more systematic. The
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usage however is the same.
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5. Terminal-Installation (adapt CP/M-volksForth to your CP/M system)
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* because the kernel does not contain a fileinterface anymore, the file-
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interface must be loaded before the simple-editor:
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A> kernel fileint.fb
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1 load
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use primed.fb 1 load
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use terminal.fb
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6. How to create a standard CP/M-volksForth system:
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* use the follwing command sequence to create the VOLKS4TH.COM from
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a KERNEL.COM file:
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A> kernel fileint.fb
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1 load
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include startup.fb
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7. new and removed files
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- XINOUT.FB terminalfunctions and line editor
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- COPY.FB the functions COPY and CONVEY
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- STRING.FB (removed)
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