Bob Campbell <nunya@none.none> wrote:
> Walt Perko <r4rguy@gmail.com> wrote:
>> On Monday, September 19, 2022 at 5:31:47 PM UTC-7, Bob Campbell wrote:
>>
>>> Ah yes. Lines 150 and 180.
>>
>>
>> Okay, I fixed line 150 and 180 ... but now the program just prints stars
>> across the screen row after row ???
>>
>> e.g.,
>> ********************************************************************************
>> ********************************************************************************
>> ********************************************************************************
>>
>> I'm sending the output to the serial port which is connected to a
>> VersaTerm VT-100 emulator that connects to a VGA/LCD monitor.
>>
>> When I run the program on my Altair-Duino Pro, on a VersaTerm, or ASCII
>> Terminal or even in TeraTerm on my PC I see a sine wave.
>>
>>
>> 10 OPEN "COM:88NE1" FOR OUTPUT AS 1
>> 20 INPUT "Pause Time";P
>> 40 REM arkable Program by David Ahl and modified by WKP SINEWKP.BAS
>> 50 B=0
>> 100 REM START LONG LOOP
>> 110 FOR T=0 TO 80 STEP .25
>> 120 A=INT(26+25*SIN(T))
>> 130 PRINT #1, TAB(A);
>> 140 IF B=1 THEN 180
>> 145 FOR PAUSE = 0 TO P:NEXT PAUSE
>> 150 PRINT #1, " *";
>> 160 B=1
>> 170 GOTO 200
>> 180 PRINT #1, " *";
>> 190 B=0
>> 200 IF INKEY$<>"" THEN GOTO 999
>> 250 NEXT T
>> 998 GOTO 50
>> 999 END
>
> This will not work with PRINT #1 going out the serial port. OPEN FOR
> OUTPUT AS 1 means you are creating a text file. There is no cursor to
> position.
>
> All you can send is plain text. PRINT TAB (A) is for positioning the
> cursor on the screen. There is no cursor to position in a text file.
>
> The best you can do is just PRINT #1 formatted lines of text. Like this:
>
> * *
> * *
> * *
> * *
> * *
> * *
> * *
> * *
> * *
> * *
>
> And on and on. To print any pattern you want. Not very elegant, but that
> is how all “graphics” were printed out way back when, on computers that had
> no graphics capabilities.
>
> The program you are using is designed to run on a screen. Not to create a
> text file.
>

Yeah, I knew the above would not come out correctly. It was a large V
originally.

But you still get the idea.