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Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
Hi Folks,
Well it works a treat. Here is the program I created and tested in BASin:
[CODE]100 REM
110 REM Create MCODE
120 REM
130 CLEAR 60000
140 LET a=60000: RESTORE 280
150 READ v: IF v -
Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... in BASin the first two random values returned are always zero ... to be non zero and random. This only happens when the ... -
Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
... REM Display Counter, Random No(0-255), Random No(1-42)
420 REM Error is Random No 42
430 REM ... to run correctly and generates random number between 1 and 42 ... -
Alkatraz protection systemI recently became interested in the Alkatraz protection system, a very widely used tape protection (a infoseek search returns more than one hundred r…
... usr peek etc stuff too ? :-o or just any other random things ... -
Amazonia (BUGFIX)This is a bugfix for game [URL="http://www.worldofspectrum.org/infoseekid.cgi?id=0027280"]Amazonia[/URL], please add the following "known errors" des…
... =48304 TO 48443: POKE f,PEEK (f+9): NEXT f: POKE ... 49359 STEP -1: POKE f,PEEK (f-2): NEXT f: POKE ... (143):=40 ; move 'COBRA' to random location
e317: 0b 8f ... (143):=40 ; move 'COBRA' to random location
e317: 0b 8f ... -
WANTED: Britain Invaded! instructions[deleted]
... /> I've had a quick peek at the listing and played ... appears to have a pseudo-random element. As can be seen ... "dice" is rolled. Although the random seed is apparently set to ... -
problems with rndGot past the whole INKEY$ issue and now am trying to pin down the combat section of the game. got a basic combat routine however, when i try and gen…
... i want to do a random roll i just pick some ... that's always changing and peek the value then look up ... -
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 …
... could check this with a peek somewhere? just check it once ... wrong. I was applying the random movement to the whole array ... -
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 …
... wraparound and calculates a possible random vertical shift for the target ... /> DEF FN t()=INT ((PEEK 23673*256+PEEK 23672)/50)
30 ... -
[MOD] R-Type IIII suppose it makes sense now to register [URL="http://www.worldofspectrum.org/forums/showpost.php?p=401659&postcount=15"]R-Type III[/URL] back in the…
... is no map, just endless random alien ships. It looks for ... /> Someone other than me must peek the code and confirm mheide ... -
Diagnosing a strange software fault in a 48kHi, A friend gave me a 48k, which I am very keen to restore. The spectrum 48k was my first computer over 20 years ago and I owe my ability to code t…
... /> POKE 50000,85
PRINT PEEK 50000
POKE 50000,170 ...
PRINT PEEK 50000
You should ... address range and writes a random values, reads it back and ... -
Spectrum 16K Issue 3Hi! I just received a Spectrum 16K, which turns out to be an Issue 3. Is it really that rare? If not, I?d like to upgrade it to 48K. There are 12 em…
... a random value in the upper 32K (say 60000) and PEEK it ... -
Spectrum 16K Issue 3Hi! I just received a Spectrum 16K, which turns out to be an Issue 3. Is it really that rare? If not, I?d like to upgrade it to 48K. There are 12 em…
... a random value in the upper 32K (say 60000) and PEEK it ... -
pathfindingworking on pathfinding in the game. here is Russian description of Lee's algorithm: [url]http://algolist.manual.ru/games/wavealg.php[/url] "if-then"…
Although pathfinding is a very interesting theme, I'm afraid this discussion is getting boring. I suggest we shift the focus of this thread in a more productive direction...
Therefore I have implemented the "simplified Dijkstra" algorithm from ... -
pathfindingworking on pathfinding in the game. here is Russian description of Lee's algorithm: [url]http://algolist.manual.ru/games/wavealg.php[/url] "if-then"…
...
70 LET px=PEEK q1: LET py=PEEK (q1+1): LET ... -
Corrupt paper on zx spectrum 48kHi. When I power up my spectrum (issue 3) I get the light grey border, but the paper is black and it switches between thin red vertical lines and thi…
... RAM chip without using the peek/poke routines? (with a multimeter ... , the Z80 may be processing random instructions or it may have ... -
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…
... /> [*]Lines 25 & 26 select random segments in high memory and ... ]DEF FN p(a)=PEEK a+256*PEEK (a+1)[/b]
PEEK (pa+1)*256: RETURN[/b ... -
Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…
[QUOTE=Dock;774114]Experimenting more has lead me to realise the limitations in my own code, so I'm going to try to keep it as simple as possible. Next step is to get the game responding to certain tiles as collectables or switches.[/QUOTE]
... -
Dock's ZX Maze gameI'm hoping to finish a simple maze game in ZX Spectrum BASIC this week, as part of the Ludumdare Retro challenge. I used to dabble in speccy basic on…
[QUOTE=Battle Bunny;774142]Here's some extracts from a program which I've been working on recently, which illustrate some methods to consider. An exhaustive commentary follows ...
[code]
35 LET j1= 0: LET j2=-1: LET s=1: RETURN
... -
Detecting flash mode inversionsIs is possible to detect with certainty when flashing characters change from normal to inverted and vice-versa?
... comes back on? Is it random or is it where it ... =32: LET f=INT ((z+PEEK 23672)/16):
PRINT AT ... -
RANDOMIZE - still not sure what it does...Whenever I wish a random number I use RND like: 10 LET a=RND*100 20 PRINT a 30 GO TO 0 and "a" will truly be random. But if is do the following: …
... ...
[B][COLOR="DeepSkyBlue"]Random Number Generator Routine[/COLOR][/B ... FRAMES
230 LET v=PEEK 23672
240 REM SEED ... ]
To generate a random number between 1 and N ... -
IN and OUT in hardware terms... what are 'ports'?Hi all, I understand PEEK and POKE, but have never managed to get my head around IN and OUT. The books all go on about how they read from and wri…
... [/i], though.
The PEEK and POKE BASIC statements manipulate ... ] to hardware.
A PEEK will result in something that ... won’t exactly be [i]random[/i], but they will then ... -
So where is the random number in the Speccy ?So I am messing around with ZX Spectrum Assembler and I want a random number. I looked up previous posts and one of the links said that random number…
... br /> 49 if you PRINT PEEK 14000[/quote]
No, ... /> Most people write their own random number generator rather than relying ... Obviously this isn't especially random, since it reads values from ... runs, the results will be random enough for most purposes. ... -
ZX Spectrum+ showing 16K of RAMHello again, as the title says my ZX Spectrum+ is showing only 16K of RAM instead of 48K when running a memory check. [url="http://www.1000bit.it/su…
... few tests poking random numbers above ... /> POKE 85 01010101
PEEK 213 11010101
POKE 1 00000001
PEEK 129 10000001
POKE 255 11111111
PEEK 255 11111111
Getting an even random numberWhat would be the best, simplest way to do this ? I was thinking of say: A = RND*100 Then a conditional along the lines of: IF A / 2 <> I…
I use PEEK 23672 as a random number between 0 and 255 ... , it can work as a random number when it is included ... you´ll obtain an even random number between 0 and 510 ...Non-repetitive RNDHi guys) Perhaps, some of you already encountered a situation, when one needed a set of [b]unique [/b](pseudo-)random values, say, from zero to 25…
Surely just generating the seed from [PEEK] (frames) after an input or any wait for user input (EG select joystick or even "press a key to continue") would generate a number random enough for the majority of cases?Non-repetitive RNDHi guys) Perhaps, some of you already encountered a situation, when one needed a set of [b]unique [/b](pseudo-)random values, say, from zero to 25…
... just generating the seed from [PEEK] (frames) after an input or ... continue") would generate a number random enough for the majority of ... cases?[/quote]
For “normal” random numbers, yes.
But not ...Brain 8I am glad to present my new "experiment" in Sinclair Spectrum 48K BASIC. https://drive.google.com/file/d/17_wCFWaAl5diIVt3rPLTbKhxDmPmYmOs/view?us…
Congratulations on the release IvanBasic. I had wondered what your ... .
. Are you using POKE/PEEK for variables for improved speed ...
