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Latest Threads
Error: LET string1 = stri...
Forum: Bug Reports
Last Post: zarsoft
08-15-2024, 06:06 PM
» Replies: 3
» Views: 257
Error: loop ends every se...
Forum: Bug Reports
Last Post: zarsoft
08-11-2024, 05:41 PM
» Replies: 5
» Views: 371
Error: -1
Forum: Bug Reports
Last Post: boriel
08-10-2024, 08:17 AM
» Replies: 1
» Views: 180
attr.bas syntax error
Forum: Bug Reports
Last Post: csk
07-15-2024, 05:16 AM
» Replies: 2
» Views: 401
My computer is haunted!
Forum: Bug Reports
Last Post: zarsoft
05-22-2024, 10:30 AM
» Replies: 0
» Views: 439
Includes in ASM
Forum: How-To & Tutorials
Last Post: bracckets
04-04-2024, 12:17 AM
» Replies: 2
» Views: 1,815
Store array information i...
Forum: Help & Support
Last Post: rbiondi
03-10-2024, 09:42 PM
» Replies: 0
» Views: 1,087
ScrollLeft function scrol...
Forum: Bug Reports
Last Post: rbiondi
03-07-2024, 03:57 PM
» Replies: 2
» Views: 2,164
string.bas errors when co...
Forum: Bug Reports
Last Post: rbiondi
03-01-2024, 10:10 AM
» Replies: 2
» Views: 1,901
Using Beepola with ZX BAS...
Forum: How-To & Tutorials
Last Post: edtoo
02-29-2024, 09:47 AM
» Replies: 15
» Views: 39,461

 
  Error: LET string1 = string1 ( 1 TO LEN string1) (solved)
Posted by: zarsoft - 08-14-2024, 10:45 AM - Forum: Bug Reports - Replies (3)

In my program I had

DIM EDLINE AS STRING ' global variable

and if I wrote

EDLINE = EDLINE( TO LEN EDLINE-2)

then the test

EDLINE = ""

it didn't always work

and I had to use

LEN EDLINE = 0


Then I changed it to

aux = EDLINE( TO LEN EDLINE-2)
EDLINE = aux

and the test

EDLINE = ""

worked well.

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  Error: loop ends every second (solved)
Posted by: zarsoft - 08-07-2024, 07:37 PM - Forum: Bug Reports - Replies (5)

When you press "1" the loop ends every second.

Code:
SUB Menu
DIM k$ AS STRING
CLS
PRINT
DO
  PRINT
  PRINT
  PRINT "MENU"
  PRINT " 1 - Test"
  PRINT " 0 - Exit"
  DO
    k$ = INKEY$
  LOOP UNTIL (k$ >= "0") AND (k$ <= "1") ' loop ends every second
  'LOOP UNTIL k$ <> "" ' runs OK
  'LOOP UNTIL (k$ = "0") OR (k$ = "1") ' runs OK
  'LOOP UNTIL (k$ >= "0") AND (k$ <= "1") ' loop ends every second
  PRINT
  IF k$ = "1" THEN PRINT "Option 1"
LOOP UNTIL k$ = "0"  
PRINT
PRINT
PRINT
END SUB

Menu
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  Error: -1
Posted by: zarsoft - 08-06-2024, 08:54 AM - Forum: Bug Reports - Replies (1)

DIM s AS STRING
s = ""
PRINT LEN s-1 ' gives 65535
PRINT LEN ""-1 ' gives -1

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  attr.bas syntax error
Posted by: csk - 07-14-2024, 05:38 PM - Forum: Bug Reports - Replies (2)

Hi! I'm writing a game about a pig that has to eat various food items. Food items are realized by means of UDG's stored in DATA lines and READ in en masse at the beginning of the game. Then, to draw the necessary items, I move address 23675/-76 to the required location. Until yesterday, the system worked flawlessly. Now I added a new item, and the compiler began to throw the following errors. The highest address an UDG byte is stored is 65294, i.e. AFAIK it is still allowed. I did nothing else than add the new DATA files and jump conditions to draw the new item, and what previously worked impeccably, just stopped doing so. I simply don't know what to do. Could you help? Thanks in advance!


.jpg   Clipboard01.jpg (Size: 232.31 KB / Downloads: 94)

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  My computer is haunted!
Posted by: zarsoft - 05-22-2024, 10:30 AM - Forum: Bug Reports - No Replies

My program gives intermittent errors.
The result also depends on the emulator.
What's going on here?
Program error? Is the compiler broken?

[Image: Trace.png]
files: files.zip

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  Includes in ASM
Posted by: bracckets - 03-27-2024, 03:16 PM - Forum: How-To & Tutorials - Replies (2)

Is it possible to use assembler includes in the inline ASM code blocks
so the assembler can be broken down into files, e.g.

INCLUDE maths.asm

Also is it possible to include binary files in the assembler e.g.

BINARY 'test.bin'

Thanks

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  Store array information in extended memory (128kb)
Posted by: rbiondi - 03-10-2024, 09:42 PM - Forum: Help & Support - No Replies

Hello,

Is it possible storing arrays and/or Strings in Zx Spectrum Extended Memory (128kb)? 
How could this would be accomplished?

Thank you very much!
Rogerio

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  ScrollLeft function scrolling more than 1 pixels left
Posted by: rbiondi - 03-01-2024, 10:42 AM - Forum: Bug Reports - Replies (2)

Hello,

I'm trying to use the ScrollLeft function to create a scrolling chart and the ScrollLeft function seems to be scrolling more than 1 pixel left. 
The screening area on the left also seems to be not to be pixel acurate. 

Sample program:

Code:
#include <scroll.bas>

INK 7
PAPER 0
CLS
sub square(x1 as UBYTE, y1 as UBYTE, x2 as UBYTE, y2 as UBYTE, color as UBYTE)
    DIM x AS UBYTE = 0
    DIM y AS UBYTE = 0
    FOR x = 0 TO x2 - x1
        PLOT INK color; x1 + x, y1
        PLOT INK color; x1 + x, y2
    NEXT x
    FOR y = 0 TO y2 - y1
        PLOT ink color; x1, y1 + y
        PLOT ink color; x2, y1 + y
    NEXT y
END SUB
SUB plott(x as FLOAT, y as FLOAT, sx as FLOAT, sy as FLOAT, x1 as UBYTE, y1 as UBYTE, x2 as UBYTE, y2 as UBYTE, color as UBYTE)
    DIM alfa AS UINTEGER
    DIM beta AS UINTEGER
    DIM mx AS UINTEGER
    alfa = ((x/sx) * (x2 - x1)) + x1
    beta = ((y/sy) * (y2 - y1)) + y1 + ((y2-y1)/2)
    ' Limites da tela
    IF alfa >= x2 - 1 then alfa = x2 - 1
    IF beta <= y1 + 1 then beta = y1 + 1
    mx = alfa mod x2
    IF alfa >= (x2-1) then
        ScrollLeft(x1 + 1, y1 + 1, x2 - 1, y2 - 1)
        alfa = x2-1
    END IF
    PRINT at 10,10; "alfa: "; alfa
    PRINT at 11,10; "beta: "; beta
    PLOT ink color; alfa, beta
END SUB
square(10, 15, 80, 60, 6)
DIM dia AS INTEGER
DIM valor AS float = 0
DIM incremento AS FLOAT = 1
' Create a sample scrolling chart
FOR dia = 1 TO 5000
    plott(dia, valor, 360, 100000, 10, 15, 80, 60, 6)
    valor = valor + 1000 * incremento
    IF valor > 49000 then incremento = -1
    IF valor < -49000 then incremento = 1
NEXT dia


Thank you very much!

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  string.bas errors when compiling with strict
Posted by: rbiondi - 02-23-2024, 11:29 AM - Forum: Bug Reports - Replies (2)

Hello,

I'm trying to compile my program with --strict option and getting some errors in string.bas:


Code:
zxbasic/src/arch/zx48k/library/string.bas:124: error: strict mode: missing type declaration for 's$'

I just fixed and tried to create a branch and send a merge request to zxbasic git repository but I'm not authorized.


Thank you,
Rogerio

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  Johnny Bravo
Posted by: zarsoft - 02-11-2024, 11:20 PM - Forum: Gallery - No Replies

To play online, click HERE.

[Image: Johnny%20Bravo%20-%20Run%20Johnny%20Run%...oft%5d.png]

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