slviajero
commented
1 year ago IoT BASIC parses everything brutally and without exception.
The correct syntax of REM is
10 REM “This is a comment”
Thank you for the compliments on “fast”. One reason is the tokenisation and then the line number cache on GOTO plus a few other tricks. I will try the PI program myself if I may.
Arrays can have a start index of zero by using a SET command.
SET 12, 0
Sets the array variable start index. Any number >= 0 is legal. The setting applies for all arrays. It can be changed any time.
LIST 100, 200
Lists lines between 100 and 200.
LIST 0,100
shows all lines from beginning to 100. I use the same argument parser everywhere. That’s why it is not -100 or 100-200. The tokenised would make this a negative number expression. Brutal tokenisation has a price.
As to CHR$() this also exists in a slightly different form. Try
A$=“Hello” A$(5)=65 PRINT A$
All string expression accept a number. Strings in IoT BASIC are like C strings: char arrays.
If you want to print an ASCII directly, do
PUT 65
instead of print.
This works also the other way around. Try
A$=“A” PRINT A$ PRINT (A$)
;-). This is ASC(). I had a lot of fun doing this.
On 20. Mar 2023, at 18:25, Guido Lehwalder @.***> wrote:
Dear Stefan, I tested IoT-BASIC on a TTGO VGA32. Its impressive fast :) While it was PI-Day some guys and I tested a programm which calcs Pi https://forum.classic-computing.de/forum/index.php?thread/22627-runcpm-speed-vergleich-auf-verschiedenen-plattformen/&postID=406000#post406000. It does need only around 3 secs for 100 positions after the comma!
In the ASCII-File source we got some REM lines at the begining and in the middle of the source: CPINEW.zip https://github.com/slviajero/tinybasic/files/11021201/CPINEW.zip After loading the source-file the text after the REM gets distorted :(
Original sample:
100 REM CALCULATING PI FOR HUNDREDS OF DIGITS 110 REM THX TO ROSETTACODE.ORG FOR THE BASE OF THE PROGRAM 120 REM SHOULD BE A BENCHMARK FOR THE BASIC INTERPRETER/COMPILER 130 REM WRITTEN IN 2023 FOR FORUM.CLASSIC-COMPUTING.DE BY PETER DASSOW after loading the source:
100 REM CALCULATINGPIFOR HUNDREDSOFDIGITS 110 REM THX TO ROSET TACODE0 OR GFOR THEBASEOFTHEPROGRAM 120 REM SHOULDBEABENCHMARKFOR THEBASICINT ERPRETER/COMPILER 130 REM WRITTENIN2023 FOR FOR UM0CLASSIC-COMPUT ING0 DEBYPETERDASSOW Maybe you could check if the IoT-BASIC is trying to parse these REM-lines?
BTW: Es waere schoen, wenn Arrays einen Start-Indoex von 0 haetten. Ansonsten fehlt mir zur Zeit nur die Funktion CHR$ und evtl. LIST Befehle wie "LIST -100" bzw. "LIST 100-500"
Liebe Gruesse nach Muechen und vielen Dank im Voraus fuers ueberpruefen im Voraus :) Guido
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guidol70
Dear Stefan, I tested IoT-BASIC on a TTGO VGA32. Its impressive fast :) While it was PI-Day some guys and I tested a programm which calcs Pi. It does need only around 3 secs for 100 positions after the comma!
In the ASCII-File source we got some REM lines at the begining and in the middle of the source: CPINEW.zip
After loading the source-file the text after the REM gets distorted :(
Original sample:
after loading the source:
Maybe you could check if the IoT-BASIC is trying to parse these REM-lines?
BTW: Es waere schoen, wenn Arrays einen Start-Indoex von 0 haetten. Ansonsten fehlt mir zur Zeit nur die Funktion CHR$ und evtl. LIST Befehle wie "LIST -100" bzw. "LIST 100-500"
Liebe Gruesse nach Muechen und vielen Dank im Voraus fuers ueberpruefen im Voraus :) Guido