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| How to manage part of a STRING? |
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Posted by: LukeBord1 - 2018-01-09, 12:29 AM - Forum: How-To & Tutorials
- Replies (4)
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In standard Basic, we have this example correctly working:
Code: 10 LET a$="123456789012345678901234567890xy"
20 PRINT AT 0,0; a$
30 IF INKEY$="0" THEN LET a$=a$(32) + a$(1 TO 31)
40 GOTO 20
...but it doesn't seem to work in ZXB:
Code: DIM test AS STRING
test="123456789012345678901234567890xy"
mainloop:
PRINT AT 0,0; test
IF INKEY="0" THEN
test=test(32) + test(1 TO 31)
END IF
GOTO mainloop
Thoughts?
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| RANDOMIZE USR issue |
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Posted by: LukeBord1 - 2017-11-23, 09:16 PM - Forum: Help & Support
- Replies (15)
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I'm trying to compile a short menu program including a RANDOMIZE USR command which calls an external assembly routine (tested).
Using both the latest ZXB v.1.7.2 and the previous v.1.6.12, the compiled program freezes. Recompiling it without the RANDOMIZE USR command, all goes ok!
Even trying to change the memory addresses, it seems the problem persists between the RANDOMIZE USR instruction and something inside the code...
Code: DIM y,a,i AS UBYTE
y=10: a=0: i=1
10 BORDER 0: PAPER 0: INK 0: CLS: POKE 32005,0
RANDOMIZE USR (address of the external tested routine)
20 PRINT AT y,11; BRIGHT 1; OVER 1; INK i;" "
IF a < 10 THEN a=a+1
ELSE a=0
END IF
IF a=10 THEN
IF i < 7 THEN i=i+1
ELSE i=1
END IF: END IF
IF (INKEY="1" AND y <> 10) THEN GOSUB 70: y=10: POKE 32005,0: END IF
IF (INKEY="2" AND y <> 11) THEN GOSUB 70: y=11: POKE 32005,1: END IF
IF INKEY="3" THEN BEEP .04,50: RANDOMIZE USR (game start address): GO TO 10: END IF
GO TO 20
70 PRINT AT y,11; BRIGHT 0; OVER 1; INK 7;" ": BEEP .04,50: RETURN
Thoughts?
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| Question about the ORG value |
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Posted by: LukeBord1 - 2017-11-18, 05:37 PM - Forum: How-To & Tutorials
- Replies (3)
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Maybe the question could result dumb to Assembly experts; however, is there a way to make an ORiGin memory address flexible? Saying it more clearly, even setting an ORG value in the ZXB commandline, is there a way to import the code into a new memory address?
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