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Code optimisation! 16bit number to 5 digit stringJust for interest this one, any thoughts on how to make this as fast as possible? Little optimisations to this routine or a complete reimagining? …
... , HL at end of string,assume string doesn't straddle word boundary ...
lp: inc (hl) ;increase string number
ld a,(hl ... l,c ;HL back to start of string
dec de ;decrease ... ,lp
ret
;
string:
db '00000' ;16 bit ... -
How to separate a character from a number in a string?Hi I've been writing a kind of logo type program in BASIC that takes a string a$ from INPUT and then draws according to what you give it. Say you w…
... in BASIC that takes a string a$ from INPUT and then ... draws according to what you give it. Say ... character it reads in the string a$ is a number or ... -
Can't Get My Simple Code To RunHello again, I'm trying to run the following simple code: [code] org 32768 main ld b, 21 ; x coordinate is …
... of text
ld de, string ; string to print
ld bc, ...
; ***************************************
; de string to print
; be length of ... :
[quote]
B Integer out of range, 0:1 ... -
Scrolling string variablesCan anyone help me with this for a program I'm writing on the spectrum. There was a command in speccy basic that would let you scroll a string variab…
... would let you scroll a string variable left or right one ... wraparound - can anyone remember how to do it?
eg
I seem to remember it only worked in ... -
New Functions for Sinclair BasicA total of 52 new functions can be added to Sinclair BASIC; 26 numeric functions (A-Z) and 26 string functions (A$-Z$). Owing to the internal structu…
... -Z) and 26 string functions (A$-Z$). Owing to the internal structure ... the numeric functions are restricted to dealing with 8-bit numbers ... hex string ("0000"-"FFFF")
[i]posint8[/i] = 8-bit positive integer ... -
String slicing for UDG definitionHey everyone. Got a bit of a string slicing/string to variable conversion problem. 10 let a$="01100110" 20 let pokevalue=???? What expression do I…
... /> Got a bit of a string slicing/string to variable conversion problem.
to put in line 20, to give pokevalue a ... value from 0 to 255 (i.e. the numerical ... -
ANNOUNCE: BASin Release 12 ready for downloadWell, after a rather large break, BASin's latest incarnation is ready for public use. Probably. BASin is a Sinclair Spectrum development environme…
... br /> single step, run to, go to functions
Error help ... system variables without having to remember the addresses
integer scaling for better scaling ... />
String formatting - right click a string and get programmed ... -
ANNOUNCE: BASin Release 12 ready for downloadWell, after a rather large break, BASin's latest incarnation is ready for public use. Probably. BASin is a Sinclair Spectrum development environme…
... br /> single step, run to, go to functions
Error help ... system variables without having to remember the addresses
integer scaling for better scaling ... />
String formatting - right click a string and get programmed ... -
Method to read byte as binary string rather than dec?Hi all Am fiddling around with the screen buffer and have written a routine to scan the screenbuffer into upper ram and then write it back in upside…
... and have written a routine to scan the screenbuffer into upper ... , I am trying to find a way to reverse each 8x8 square ... have an 8 byte buffer to store the 0 and 1s ... -
Insane string of bad luckWhat a horrendous past 3 months. :cry: All my computers died (including WoS), 2 of my guinea pigs died, my holidays got canceled and tonight my DVD p…
... out.
Surely such a string of bad luck was thought ... I fully expect my house to burn down tomorrow...
Edit: forgot to mention the 2 WoS outages ... of nine hours each due to routers dying. -
Integer RangesOK, I need a little help clarifying something. I am making good progress with the emulator so far - I've emulated most ADD, INC, DEC commands (as we…
... registers as unsigned 16-bit integer pairs (e.g. BC, ... />
As I'm about to start emulating the SUB commands ... I need to make sure that I ... an 8-bit register -128 to +127? Does this hold true ... .e. is the range 0 to 255 for additions)?
< ... -
BASIC: Fast way of filling a string?Recently I decided to use string slicing to extract random numbers from a sequence in the one-liner Lottery picker: [quote] 20 RANDOMIZE : LET a$=""…
Recently I decided to use string slicing to extract random numbers from a ... : LET a$="": FOR f=1 TO 49: LET a$=a$+CHR ... ): NEXT f: FOR g=1 TO 8: PRINT AT g-1 ... ";STR$ (g);":": FOR f=1 TO 6: LET b=1+INT ... -1,8+((f-1)*3);" "( TO (CODE a$(b) -
.DSK to .TZX?Can I convert a .DSK image to .TAP or .TZX? If not, is there a way to get information from the 'CAT' command and use it as a string so that I can sav…
... I convert a .DSK image to .TAP or .TZX? If not ... , is there a way to get information from the 'CAT ... and use it as a string so that I can save ... all contents to a virtual tape in Spectaculator ... .
If I have to do it one by one ... -
So you want to make a cardgame......but you haven't got a good deck to display. Well here is a fully relocatable routine that will do the job for you. Place the code anywhere in me…
... The string after the USR holds the card to print.
to prove relocatable
RET ; back to BASIC
... -
Draw (x1,y1) to (x2, y2)?I was never very good at math. :( Given the above variables, what should I do to draw a line between the two pixels? How do I calculate the values fo…
... variables, what should I do to draw a line between the ... sometimes it gives me an integer out of range error.
2 questions about matrix and string handlingI was never good at understanding how to do something random in Sinclair Basic without repeating something that was already done. Had problems unders…
... never good at understanding how to do something random in Sinclair ... found myself stuck while trying to help my kids with their ... be the best way to randomly scramble the string?
... words? Does such routine need to check A$ character by character ...More questions to ponder/argue/ignore as you wish...Just copying some stuff to a memory stick, and I found some old questions I'd intended to post on these forums to provoke debate, that I'd never got …
... (20455 characters). Please shorten it to 16384 characters long."
< ... paid footballers are really inferior to lower paid footballers, even ... think I'd choose a (string) version of Pachelbel's Canon ... I can't claim to be eligable to judge properly, but I ...problem with DEFADD storageI have a function: DEF FN t(t$,m,t)=USR t which is called with, for an example: LET bc=FN t("t$()",mcworkspace,mcputt) where, at the time: mcworkspac…
... to the string and the 3rd one, being a positive integer ... ? How does 907F580000 evaluate to 65368? Is there some ... way to force the number to be held in ... form? The number seems to be understood in that form ... I change the function to be simply: DEF FN ...Multi Dimension String Arrays.Ok so I've been playing with Sinclair Basic though BASIN and I'm wanting to use multi dimension string arrays, if it is possible. I know what when a…
... I'm wanting to use multi dimension string arrays, if it ... For example if I was to create a 2D character array ...
It would allow me to store 10 strings of 10 ...
Is it then possible to say
DIM ... ,10,10)
To create ten arrays of ten ...checking bits in BASICThe question of manipulating bit patterns in BASIC was raised recently in this [thread=35728]Keys redefine routine and key check[/thread] thread. I s…
... thread. I suggested converting numbers to binary held in character strings ... little loop to build a binary number in a string, and also ... as that's the longest integer which the Spectrum will display ... br />
For example, to convert 12345 to a 16-digit binary ...problem with RND (or maybe INT)I'm using this statement: LET m=(INT (RND*sn)+k1)*k2-k1 to give a pointer m to a 2-byte segment of a string l$. Items k1 & k2 are integer constants…
... pointer m to a 2-byte segment of a string l$. ... Items k1 & k2 are integer constants 1 ... number of segments in the string (ie. half the length ... />
FOR p=k0 TO k0 STEP k0: LET m ... . Any suggestions on how to define the expression so that ...Overflow Detection while Scanning a Number from a StringI've got some strange behaviour from a subroutine that reads a number from a string and converts it to a 32-bit long. It's C's strtol if it helps to…
... a number from a string and converts it to a 32-bit ... s strtol if it helps to nail down the details.
to 2^n-1 cannot ... a bit soft so over to you.
... Edit: It amounts to proving this:
Let ...appending data while saving to tapeBefore trying to do this I just wanted to check if there's a possibility that it might actually work. I have a number of string arrays which I want t…
... number of string arrays which I want to save as ... -LOOP, instead of jumping to finish at SA-PARITY, ... has just occurred to me, which is to DIM the ... data + headers. The string data would be interspersed with ... the string array headers but that ...A 128 Routine to Put Tokens in StringsI was writing a DEF FN on the +128k and decided that I'd had enough of not being able to put function tokens in strings without a great palaver and s…
... enough of not being able to put function tokens in ... wrote this little BASIC routine to do it for me. ... Just define the functions to be inserted as lower case ... wherever it is to occur within a quoted string. So for ... /> PRINT CHR$ p;: GO TO 9995-(3 AND b> ...Raising to the powerA curiosity of ZX Basic I found yesterday is that you can't do this: [code] 10 LET x=-3 20 LET y=x^2 [/code] While you can for example do LET y=-3^…
... saw an explanation as to why BASIC is ... to as a floating point number and not an integer, ... and there may be no real solution to ... a negative number raised to a non integer power. ... But no explanation on the best way to ...SpecBAS 0.789 releasedHi all! Back with another SpecBAS release - this one's mostly just about sprites and bug fixes. One new addition I do quite like is the expression c…
... window. Beware, a single integer will still delete program ... , however
More dithers to GRAPHIC REMAP - dtFLOYD, dtJARVIS, ... scrolling
Loading of string and numeric dynamic arrays ... screen information by trying to write to palette entries > ...Converting an integer arbitrary large binary number into a printable decimal formThis was asked a long ago at the comp.sys.sinclair newsgroup. At that time, I came up with a solution by extrapolating the classic algorithm of suces…
...
Yesterday, I was introduced to the [url=https://en.wikipedia ... the ability to shift to the left, and adding 3 to a ... that gives us the integer number closer to the argument, greater ... BCD ds 308,0 ;Space to store BCD representacion (616 BCD ...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…
... br /> function
go to
goto
...
then
to
ubound
... string
byte
ubyte
long
ulong
integer ...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…
... regular USING formatting string
USING$ function - identical to PRINT USING() but ... /> DIV now does a proper integer divide...
Runs of arithmetic ... /> Adding an extra index to a string array reference wasn't parsed ...From RAM to dim v$() "video buffer" SPEED UP!Hi! This question is related to "quick RAM copy using LET in Basic" ([url]http://www.worldofspectrum.org/forums/showthread.php?t=44296[/url]). Wel…
... /> This question is related to "quick RAM copy using LET ... with 160 bytes corresponding to 16*10 tiles. Each ... a bucle from 0 to 159 bytes for read ... to end...
This routine load/converts/make my v$ string ... I try changing POKE to v$(pos to pos+1)=chr$( ...
