-
SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…
... has default values of 96,21,8 which can be ... =UDGset, 3=CHARSset; defaults 8, 21, 96
BlockGen:
... /> ; 3: lo-byte = CHR$ adjustment = (1st CHR$)-$80+(characters to check ... )
push de ;DE=CHR$ address
ld l,( ... -
Graphics questionHello. I was wondering, does anybody here know of a method to display a large (as in, the better part of the screen) bitmap/raster image using ZX Sp…
[QUOTE=LCD;743934]If 21 UDG's are not enough, ... TO 96: LET a$(n)=CHR$ (31+n): NEXT n
21 lines are printed, containing 672 ... -
hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…
... ", "ACS", "AND", "ASN", "ATN", "ATTR", "CHR$", "CODE", "COS", "EXP", "FN", "INKEY ... ,20,17,1,23,53,21,2,24,40,45,47 ... -
hash function permutation tableI'm using a simple Pearson hash function to generate keys for a $(103,6) array using a 256-byte permutation table. How do I arrange the entries in th…
... ", "ACS", "AND", "ASN", "ATN", "ATTR", "CHR$", "CODE", "COS", "EXP", "FN", "INKEY ... ,20,17,1,23,53,21,2,24,40,45,47 ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... if you want more than 21 UDG characters (19 on a ... 6 command
defb 32 ;CHR$ 'space'
udg defb ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... 164
20 PRINT AT 21,0;CHR$ c
30 FOR ... ,y): LET c$(x+1)=CHR$ 143 AND p: LET p ... y
55 PRINT AT 21,0;" ";AT 8,0,,,,,,AT ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... 6 command
defb 32 ;CHR$ 'space'[/code]
The 6 ... the other control codes 17-21 for the text output : paper ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... UDGs. To use more than 21 UDGs just define them after ... UDG data table and use CHR$ 165-255 to refer to ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... leaving 168 bytes for the 21 standard UDGs. Although the ... that, defining more than 21 UDGs in itself doesn' ... graphics, 21 UDGs, 91 tokens. If you use CHR$ 165 ... which doesn't have the 21 restriction. Such as the ... br />
which treat CHR$ 165-255 as an extra ... -
How to print logo onto screen at chosen coordinates?Hi, I've just got back into zx spectrum games after all these years and after seeing some of the great games on here I would like to start learning p…
... leaving 168 bytes for the 21 standard UDGs. Although the ... that, defining more than 21 UDGs in itself doesn' ... graphics, 21 UDGs, 91 tokens. If you use CHR$ 165 ... which doesn't have the 21 restriction. Such as the ... br />
which treat CHR$ 165-255 as an extra ... -
INPUT help?Hi folks. :) Brace yourselves, this is probably a very silly question, my BASIC knowledge is very... well, basic... Let's say, for example, I'm mak…
... $(b)=1000 THEN GO TO 21
20 GO TO 20 ... -(9 AND INKEY$="")
21 PRINT AT 12,14;a ... -
dumping protected BASIC loadersI wrote this a few weeks ago but forgot to post it. It will load & list from tape/TAP/TZX any BASIC program which has been saved with SAVE, including…
... a=a+6: GO TO 21
...
2000 LET v ... :
LET c$=CHR$ PEEK d: LET d$=CHR$ PEEK (d-1 ... ): LET e$=CHR$ PEEK (d ... -
Routine for handling large scores?[FONT=Calibri][SIZE=3]I want to store various numbers for scores and levels etc. Some of these can be very large so will need to be held in multiple …
Here's a BASIC routine which adds or subtracts 16-digit integers. Just change every occurrence of '16' to the maximum size of your numbers. Lines 41-45 do the operation on a single pair of digits and add in any carry leftwards. It just adds the ASCII ... -
Block RoutineHi Folks, I want to draw a block on the screen dependent on providing the X,Y,W,H values. I came up with the following: [CODE]100 LET l$=" …
... /> 11 FOR y=0 TO 21: FOR x=0 TO 31 ... RND*7; INK RND*7;CHR$ (RND*80+32): NEXT x ... /> 20 GO SUB 7000
21 REM SLOW
22 PAUSE ... -
Game of Life.Last year (I think) or maybe the year before, I entered a Game of Life simulator into the CSS CGC compo but for the Sinclair ZX81. I decided to port…
... changes:
[list]
[*]line 21: Added a PAPER 1 to ... 's checking "7" or "6", 21 should be 20.
[/list ... 0,0; PAPER 1,,AT 21,0,,:
DIM g$(20 ... THEN GO TO 29
21 PRINT AT 0,0;"move ... -
Microdrive usageAnyone here know about microdrive files? Had a few carts in, all have stuff on, heres an example cat 1 with the error message i get for every single …
Here's a composite of three routines from pages 16,32,35 of Andy Pennell's Microdrive book which combine to provide an extended Microdrive CAT.
[code]1000 CLEAR 64999: GO SUB 8000: GO SUB 8350
2000 GO SUB 8040: INPUT "Drive: ";d: GO SUB 5000: ... -
how do i convert a binary string into hex in basic?how do i convert a binary string into hex in basic?
... to binary string b$
21 LET b$="00000000"(TO 8 ... "): NEXT b:
LET h$=CHR$(nib+48+(7 AND nib ... -
What am I doing wrong here?[code]IF INKEY$=SCREEN$ (21,4) THEN LET SCORE=SCORE+1[/code] It's delivering a positive every time.
... /> ScrDone:;At this point the CHR$ parameters are the top entry ... LET score=0: PRINT AT 21,16;score
10 FOR ... AT r,c;a$;AT 21,4;a$
12 ... /> 110 IF INKEY$=FN s$(21,4) THEN
LET score ... =score+1: PRINT AT 21,16;score; AT r,c ... -
Bored of the Rings coded messageI was browsing [url="https://tcrf.net/"]The Cutting Room Floor[/url] recently and stumbled upon the entry for [url="https://tcrf.net/Bored_of_the_Rin…
Thanks for pointing out the letter which I'd missed out in line 3.
I thought that the encoding might be using variable multiples of 16 as offsets, as this gave "BEST!" for the last word, which seemed a likely word to appear in a hidden ... -
Arrays in BASICHi so I'm making this crappy game and I wanna store the screen positions of some UDGs in in a 50x2 array cause I have 50 characters. So I made the ar…
... would be stored as CHR$ X and CHR$ Y. When extracting the ... /> 30 LET a$(x,2)=CHR$(RND*21)
[/code]
Is ... -
Arrays in BASICHi so I'm making this crappy game and I wanna store the screen positions of some UDGs in in a 50x2 array cause I have 50 characters. So I made the ar…
... r>=low;AT r-(21 AND r>=low)" make ... r>=low; AT r-(21 AND r>=low),0 ... br /> Print #1; AT r-21,0;
Else
Print ... /> 30 LET a$(x,2)=CHR$(RND*21)
[/code]
[/quote ... around the RND functions, since CHR$ expects an integer, and if ... -
Anagram creation - not as easy as it looks?I'm writing a story and I have a mystery villain who is never revealed. My main clue was to have been that every alias he uses is an anagram of the f…
... TO 20
21 DIM n(26,2): LET ... a,1) THEN
PRINT CHR$ (a+64);" ";n(a ... THEN
PRINT "Invalid initial CHR$ (";c;") at ";pos: STOP ... c26 THEN
PRINT "Invalid CHR$ (";co;") at ";pos: STOP ... 2)-1: LET n$=n$+CHR$ PEEK pos:
PRINT ... -
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…
Here's the listing:
[code]
1 POKE 23674,0: POKE 23673,0: POKE 23672,0: POKE 65281,0: FOR q=0 TO l-1: RESTORE 130+t(q+1): READ w: FOR e=1 TO w: READ r,c: LET n=q*320+r
2 LET f1=PEEK 23672: LET f2=PEEK 23673: LET f3=PEEK ... -
How to improve my program using oversized numbersI'd like my dice program to print out the number four times bigger than normal if possible. Anyone know how to do this? Or I could write a sub rou…
... 30
50 PRINT AT 21,0; INK 7;a$
CHR$ (128+8*POINT (x,y ... -
Just watched Paul Jenkinsons's spectrum chanel and now want to write code againPlease assume for the purpose of this thread I know nothing... I want to look to write games on the spectrum but want to develop and test on my wi…
... f=1 THEN PRINT AT 21,x;CHR$ 140+" "
150 IF ... f=2 THEN PRINT AT 21,x;CHR ... $ 132+CHR$ 136
160 IF ... f=3 THEN PRINT AT 21,x;" "+CHR$ 140
170 GO ... -
Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…
...
210 REM NY>21=Cursor in bottom half of ...
220 IF NY>21 THEN LET NY=NY-22 ...
