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An odd floating point error. Avoid!While working on the revival of my old game ([url="http://www.worldofspectrum.org/forums/discussion/53207/new-game-2016-revival-a-yankee-in-iraq-1992…
... ]), I stumbled across this odd BASIC behavior:
[code]10 ... /> 20 LET a=a–.5: PRINT a: GOTO 20[/code]
print the result before it was ... -
Screen address of PRINT position...Hi Folks, The following code uses DF CC system variable to extrac the screen address for a PRINT position. [code]100 CLS 110 PRINT AT 10,16;…
... the screen address for a PRINT position.
[code ... ]100 CLS
110 PRINT AT 10,16;"A"
120 PRINT AT 11,16;"B"
So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…
... ; hide the M/C from BASIC
Call48 RST #28 ; ... a routine in the 48-BASIC environment
DEFW #2DA2 ; unstack ... /> and here's a tiny BASIC program to poke it into ... call routines in the 48-BASIC ROM, there is no need ...RANDOMIZE USR, PRINT USR etcHello just wondering why is it called RANDOMIZE UsR what does randomising have to do with it ? When calling machine code routine from adress x you ty…
... USR x ? I just tried PRINT USR 65368 it resets the ... machine! Why doesn't it print the UDG at 65368?Print (to screen) avalue held in a register pairHi guys, looking for a routine that will print any value from 0 to 65535 to the current position on the screen. I once heard that there was a PRIN…
... for a routine that will print any value from 0 to ... want a routine that will print a value held in theBC ...How can I load a picture into Basic?Having given up in frustration after a week of designing UDG's in order to try and create a picture of a Tudor house, I did it in 5 mins using DeLuxe…
... import that image into a Basic program? Do Spectrums recognize any ...How to get more than 21 UDG's in BASIC?So with graphics mode under the G cursor how many UDG's can you do from BASIC is it 21? It's all POKE 65368 and above and it's sequential ABCD.... an…
... 's can you do from BASIC is it 21? It's ... do I call them from BASIC ?A few questions about sound and keys in BASICIf I want sound in my BASIC game I have to use BEEP right ? It seems to lock up the CPU for far too long . On Arjun's page I found how to use CALL 94…
... I want sound in my BASIC game I have to use ... routine and use it from BASIC but is this not the ... make something two player in BASIC since I use INPUT INKEY ...ROM PRINT routine issuesHi all, I am using the ROM print routines a lot in my assembly program and I'm experiencing issues. I am changing the system variable DF CC to po…
... /> I am using the ROM print routines a lot in my ... resuming as normal, knocking subsequent PRINT commands off by 1 character ... . I'm assuming the ROM print routines are updating other system ... /> CALL 11563
CALL 11747. PRINT CONTENTS OF BC TO SCREEN ...Micro Mart R.I.P.I was in Morrisons Supermarket today that I saw the last Issue of Micro Mart for sale @ £2.99 . It was sad to see it go . There was an exhortation in…
... a novice to gain some basic computing skills . I stopped my ... are fairly easy to understand . Print based titles generally are struggling ...Basic programming for kidsHi there I'm thinking strongly of getting my kids to program with speccy BASIC. Both have Android tablets, so I can get two bluetooth keyboards fo…
... kids to program with speccy BASIC. Both have Android tablets, so ... and mess around with their BASIC program to see what happens ...help with my original issue 3b from when i was a teen. possible lower ram fault.hello, well ive tried to fix my old speccy, but haven't made much progress. could you help me out with some diagnosis. the fault occurred about…
... .
it initialises very fast and shows the copy write ... then tried to enter the PRINT PEEK 23732 + PEEK 23733 * 256 ... .
if I just PRINT PEEK 23732 I get 0 ... .
if I use PRINT USR "A" I get 32600 ...Text file to BASICHi, Is there anything available for Windows or Linux which lets me enter BASIC in a text file and convert to a .TAP file. I seem to recall somethi…
Hi,
Is there anything available for Windows or Linux which lets me enter BASIC in a text file and convert to a .TAP file. I seem to recall something being mentioned in the past, but I can't find it via search.
ThanksBASIC 10Liners 2017Contest is starting now! http://gkanold.wixsite.com/homeputerium/basic-10liners-2017
Contest is starting now!
http://gkanold.wixsite.com/homeputerium/basic-10liners-2017"ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…
... Starfire, the early, mostly BASIC-based release from Virgin Games ... some routines work in BASIC that I could never ... written it in +3 BASIC which goes mad if ... character sets on the BASIC editor, I've had ... every time I want to PRINT something on the stack, ...Flicker free animation in BASIC, is it possible ?With all my various noodlings in BASIC and indeed with my so far limited assembly I keep coming up with the same issue. How do you do animations wit…
With all my various noodlings in BASIC and indeed with my so far limited assembly I keep coming up with the same issue. How do you do animations without flicker or trails ? Is this possible in BASIC ?Memory questionsQuestion 1: PRINT PEEK 23732+256*PEEK 23733 returns 65535 for a 48K Spectrum and 32767 for a 16K Spectrum. PRINT PEEK 16388+256*PEEK 16389 return…
Question 1:
PRINT PEEK 23732+256*PEEK 23733 ... for a 16K Spectrum.
PRINT PEEK 16388+256*PEEK 16389 ... to write a program in BASIC so huge that it required ...48K vs 128K BASIC, I prefer the keyword entry system how about you?Being brought up with the 48k rubber and 48k+ I find the keyword entry system really fast and enjoyable to use. When I've played around with the 128k…
... the keyword entry system really fast and enjoyable to use. When ...Screenshots from my old BASIC gamesI have written several dozens of games in 90's. They haven't remained, so I show only screenshots 'for history'. Some screenshots are real, but all…
... have been written on a BASIC; gameplay was very primitive.
The only survived BASIC game from this list.
My last BASIC game (possibly, the largest BASIC game for ZX ...Basic versions of popular Spectrum games?A couple years ago I saw a game in Basic which was part of a Spanish competition, and it looked amazing. I forgot most details, but remember it resem…
... I saw a game in Basic which was part of a ... Silly clone completely written in Basic. Is there a list of ... Basic games which are similar to ... I see something written in Basic, but with good UDGs and ...Saving BASIC program from Spectrum to PCSo I did something stupid. I started writing a program on the Spectrum, and before I knew it I am on line # 1430 of my BASIC program. I now have had…
... on line # 1430 of my BASIC program.
I now have ...New language for spectrumI made a halfway language between assembly and Basic here is some example code: [code] INFLOOPSTART ifram(scrolla=1) print(intera) endif…
... halfway language between assembly and Basic
here is some ...
ifram(scrolla=1)
print(intera)
endifram
ifram(scrolls=1)
print(inters)
endifram
INFLOOPEND ...Why don't the variables print where I told them too?I wrote the following program to experiment with creating sounds using 3 notes of BEEP and having the ability to change the notes up or down one at a…
... so I told it to print them and it prints them ... c=c-1
116 PRINT "a is",a, AT 2 ... ,1
117 PRINT "b is",b,AT 4 ... ,1
118 PRINT "c is",c,AT 6 ...ZX Spectrum BASIC game jam over on itch.ioHello, everyone. Apologies for the prolonged absence. (It's been almost 4 years, yikes!) Just wanted to let everyone know there's a [url="https://itc…
... .io/jam/zx-spectrum-basic-jam"]Sinclair Basic game jam[/url] starting ...Better "Hello World"are their any more visually impressive Hello world loops i can do in basic other than the print-goto one.
are their any more visually impressive Hello world loops i can do in basic other than the print-goto one.ZX ROM in 64 characters a lineDear ZXS users, I am glad the today's release is not only concerning MB-02+ as it is normally the case with me, but it concerns really everyone, sinc…
... ROM patches which make ROM print in 64 characters a line ... be for those programming in BASIC since two times more information ...z88dk : FIle Handling in C on the +3e environment under Win 764bitHello my fellow WoSers! I am wondering if someone can help me solve this little pickle of z88dk / Windows using +3e Filesystem. So a little inf…
... />
here is the basic of basic C code
... read from this space in BASIC, by saving programs and ... /> 9999: LOAD "e:" : CLS : PRINT "Saving Program" : SAVE "e:test ... .bas" : CLS : PRINT "Program Saved"
[/code]
I live and learnThanks to Einar's ZXDB link I found under the Books folder and English sub directory a PDF file named 'The Century Computer Programming Course for Z…
... Course for ZX81 and Spectrum Basic'. I must have half ... a dozen Basic lesson books but it ... one. -
10 PRINT "This program gives the Sum ... five numbers"
15 PRINT "Enter 5 numbers and ... 20 INPUT a
25 PRINT a
30 INPUT ...
