-
AND,XOR,OR,BIT,RES,SET,CPL,NEG,RLC,RRC,SLA,SRL,RL, RR,SRA for BASICAs this was drifting away from the original INKEY$ thread I thought that I'd create a new one. So here's a routine to provide all of the above mentio…
... br /> rst $20 ;step over +VAL"
rst $20
... "RLC ";a,"= ";USR 40021+VAL "(,a"
23 PRINT " ... RRC ";a,"= ";USR 40021+VAL "),a"
24 PRINT " ... "SRA ";a,"= ";USR 40021+VAL "],a"
35 PRINT '" ... -
tiny routine to shift RAMTOP & stackCompressing some data areas above RAMTOP and wanting to make the released space available for BASIC arrays, I needed to move RAMTOP without using CLE…
... /> [code]
;Change RAMTOP to "val" without clearing variables
;POKE ... -
Indirect Variable AssignmentHere's another wacky routine. This allows assignment of values to variables where the source & destination variables can themselves be defined in var…
... can already be done with VAL or VAL$, but this works with ...
10 PRINT USR id,"val"+CHR$ (a+64),"=",v;
VAL ("val"+CHR$ (a+64));
20 ... -
Generating a constant of 2?Hi Folks, Through "The Wizard of WOS" I learnt that you can generate constants as follows: [B]NOT PI=0 SGN PI=1 INT PI=3[/B] Is there a quick way …
... are 37 occurences of [B]VAL "2"[/B] and I was ... -
stuck on recursive functionI want this function to PEEK 'l' bytes from memory starting at 's' and return them as a string, but however much I fiddle about with quoting and pare…
... with quoting and parenthesising and VAL$ering I always get either ... $(s,l)=CHR$ PEEK (s)+VAL$ "FN j$(s+1,l ... -
Tunnel Adventure: Known Error?I've been playing this game lately, and found out that both the current versions of [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0017444"]T…
... program, you must replace the "VAL v$" in line 351 with ... "VAL x$".
Interestingly, in ... versie), this line actually has "VAL x$" in it. I don ... -
BIFROST* Advanced Programming - part 1In BIFROST*, it's much easier to just make changes in the tile map and let the engine automatically draw & animate everything in multicolor for you. …
... execute:
*
* 10 CLEAR VAL "32767"
* 20 LOAD "TILES ... "CODE
* 50 RANDOMIZE USR VAL "32768"
*
* Original version ... -
BIFROST* Advanced Programming - part 2This second demo shows animated and moving tiles together, and also how to implement collision detection. This knowledge should be enough to implemen…
... execute:
*
* 10 CLEAR VAL "32767"
* 20 LOAD "TILES ... "CODE
* 50 RANDOMIZE USR VAL "32768"
*
* Original version ... -
BIFROST* Advanced Programming - part 3This new demo demonstrates the BIFROST* built-in sprite support that I mentioned before. In BIFROST*, "sprite tiles" are 2 special tiles that BIFROS…
... execute:
*
* 10 CLEAR VAL "32767"
* 20 LOAD "TILES ... "CODE
* 50 RANDOMIZE USR VAL "32768"
*
* Original version ... -
BIFROST* Advanced Programming - part 4In previous posts I demonstrated how to move multicolor tiles up and down smoothly by a single pixel, and sideways by an entire char (8 pixels). Thi…
... execute:
*
* 10 CLEAR VAL "32767"
* 20 LOAD "TILES ... "CODE
* 50 RANDOMIZE USR VAL "32768"
*
* Original version ... -
WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …
Hi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place.
Thanks everyone so far, I feel I am making good progress.
Reading the book ZX Spectrum Games Master. Its a great start ... -
BIFROST* Advanced Programming - part 5In my [URL="http://www.worldofspectrum.org/forums/showthread.php?t=40437"]previous post[/URL] I demonstrated how to move multicolor images smoothly i…
... execute:
*
* 10 CLEAR VAL "32767"
* 20 LOAD "tiles ... "CODE
* 50 RANDOMIZE USR VAL "32768"
*
* Original version ... -
BIFROST* Advanced Programming - part 6The purpose of this demo is somewhat different from previous ones. Instead of teaching a new technique, the main goal here is to demonstrate how much…
... execute:
*
* 10 CLEAR VAL "32767"
* 20 LOAD "tiles ... "CODE
* 50 RANDOMIZE USR VAL "32768"
*
* Original version ... -
Questions about BasicHi everyone, I am Max, student of media studies in berlin, and I have to do a little project on the spectrum. I am working on a sinclair zx spectrum…
... did it;)
a=val("hallo")
a=val("15")
val$="hallo"
3. the ... -
TXT2EMU enhancementI was looking at the encodings supported by BAS2TAP for entering graphics, print controls, etc. as plain text. Basically, there's only one needed, be…
... $(s,l)=CHR$ PEEK (s)+VAL$ (("FN j$("+STR$ (s+1 ... $(s,l)=CHR$ PEEK (s)+VAL$ (("{A8} j$("+STR$ (s+1 ... -
quick RAM copy using LET in BASICI'm in the process of reviewing, revising and refining all the programming tips & utility routines which I've posted on this forum over the last eigh…
Full 16*16-digit BASIC multiplicationI liked Andre Adrian's 32-bit long multiplication routine so much that I decided to a decimal version. After all, 2^63 is only 9223372036854775808, a…
... $ I+FN b$(VAL r$): LET I=VAL s$(LEN s$): POKE ... r$
903 LET r=VAL s$(TO LEN s$-1 ...SpecBAS 0.800 Released!Hi folks, it's that time again for another release. I was going to add a few more features, but I have other projects on the go at the moment, and it…
... after NEW and RUN
VAL no longer crashes specbas with ...Help with File Compressor by Mladen PopovicHi, I'm trying to compress BombJack (MCM) and transfer it to a +3 disk (Yes I own the original game :) ). I'm unsure about the addresses to enter in…
... at: 24000
clear val "23999": load""code 24000,21696 ...reversing an LFSRWhat's the correct way of reversing an LFSR so that it produces the same numbers but in reverse order? The little BASIC program below shows a test I …
...
20 LET xor=VAL a$(4)+VAL a$(5): LET xor ...
21 LET xor=xor+VAL a$(3): LET xor=xor ...
22 LET xor=xor+VAL a$(2): LET xor=xor ...GEDit syntax highlighting for Boriel's ZX BasicHi! I just tailored this syntax highlighting code and would like to share with he community. Suggestions are always welcome, though the file works w…
SpecBAS 0.802 Released!Hi folks - It's that time again when I release the latest round of features and bugfixes to SpecBAS :) New for this version are ZONEs which act ver…
... size on close
DECIMAL(val$,base) function converts from a ...eVALuating $ in +3 BasicHi all, I was very interested in the thread below about re-starting Basic, and remember reasonable amounts from zx81 and early Spectrums. But I now h…
... code the idea is to VAL this $ and make it equal ...Can anyone explain this result?This little sub-routine isn't always doing what it's supposed to; ie. transfer the value from SEED to VARS. Can anyone explain why? I've put in the P…
... VAL "23627",PEEK VAL "23670": POKE VAL "23628",PEEK VAL "23671":
PRINT PEEK VAL ... "23627",PEEK VAL ...SpecBAS 0.830 Released!Hi guys - A new official release of SpecBAS has been released. The full changelog is below, but for now here's the download: [url]https://sites.goo…
... not perform evaluation as for VAL
POS has a new ... were inappropriately cleared at times (VAL/VAL$ being a culprit, but there ...Raycasting (3D Games!) with SpecBAS<div><font face="Arial, Verdana"><span style="font-size: 13.3333330154419px; line-height: normal;">Here's one I wrote just recently. I wanted to see …
Here's one I wrote just recently. I wanted to see if SpecBAS can handle a raycasting engine - which doesn't mean doom-style texture mapping (though I may try that later!) but a rather nice algorithm that matches nicely up with the old "3D Maze" games you ...Scart 128 toastrack tip (powered scart)<br>It you have a toastrack you may like to know that you can create a powered cable ( +5v to the pin 16 on the scart) with out taking it from the sp…
It you have a toastrack you may like to know that you can create a powered cable ( +5v to the pin 16 on the scart) with out taking it from the speccy, or modding you speccy .
Most LED TVs (well the ones I have, Samsung and Logik) have ...NEW "SH*T GAME TIME" VIDEO - RENEGADE IIIHi guys, god it's good to get these forums back even though I'm not sure about the new look but hey I'm happy.<br><br>Anyway, just wanted to let you …
Hi guys, god it's good to get these forums back even though I'm not sure about the new look but hey I'm happy.
Anyway, just wanted to let you know the next entry in my "S**t Game Time" section is now up and live to watch, this time I rate ...
