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Elliptical ChallengeSubsequent to the recent "Graph Plot" thread, I wrote this general purpose ellipse drawing routine which will plot (although it doesn't actually use …
... ) without using more than 215 bytes (and preferably less)?
string
ld a,(ix+2 ... -
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…
... ' bytes from memory starting at 's' and returns them as a string ... -
z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…
... vector table with all 0xd4 bytes
bpoke(0xd4d4, 195); // POKE ... ,0
//draw some bytes to the backbuffer at 32000 ...
//draw some bytes to the backbuffer at 37000 ... -
that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…
... display (excluding attributes) in 768 bytes instead of 6144. Any screen ... they appear in the array. String array elements are scaled to ... -
Get rid of 'Bytes:' when loading codeHow do you hide the 'Bytes:' when loading code? I've tried saving as CHR$ 22 + CHR$ 6+ CHR$ 0 (a blank part of the loading screen) but it still appe…
How do you hide the 'Bytes:' when loading code?
I've tried saving as CHR$ 22 + CHR$ 6+ CHR$ 0 (a blank part of the loading screen) but it still appears at 3,0 and disrupts my screen! -
mirroring bitsIf I have a string of 1408 bytes, each of which has one bit 'b' set, what's the shortest way of mirroring that string, so that each bit set at positi…
If I have a string of 1408 bytes, each of which has one ... shortest way of mirroring that string, so that each bit set ... -
ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…
... on the 48K. The screen bytes are fetched during the first ... ' value.
3. Run a string of NOPs for the duration ... -
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…
... zone of RAM with 160 bytes corresponding to 16*10 tiles ... bucle from 0 to 159 bytes for read a byte.
string "video buffer" for paint whole ... -
Repton ManiaHi all, I am the creator, and look after, the Repton Resource Page ([url]www.reptonresourcepage.co.uk[/url]). For the site, I have written a freely …
... tracks are identified by the string "Track-Info", which indicates ... graphics (each character is 5 bytes = 8x5px)
0x07A40 0x8C40 ... characters (each character is 8 bytes = 8x8px: 32off)
... graphics (each character is 5 bytes = 8x5px)
0x10E6C 0x816C ... -
Double Buffer UtilityHi Folks, I've been experimenting with double buffering on a 48k Speccy for a small project I'm working on. After reading lots of good advice here…
... - only copies pairs of bytes, cannot handle odd numbers of ... bytes in a row
... - maximum line width of 32 bytes
# - Output is to ... binaryY = binaryY[::-1] #reverse the string
screenAddrBin = '010' + ... -
Decimal to Binary stringHi all, Anyone got a less labour intensive BASIC routine than this? Example:- take 170 and convert to a string "10101010" take 4 and convert to a s…
... 170 and convert to a string "10101010"
take 4 and ... convert to a string "00000100"
I have ... />
[code]
# SUB - Binary string conversion, A=decimal input, s ... -
im looking for a basic routine that adds a numerical character to a stringim looking for a basic routine that adds a numerical character to a string. so a=1, "1", then a=0 "10", then a=1 "101......" and so on
im looking for a basic routine that adds a numerical character to a string. so a=1, "1", then a=0 "10", then a=1 "101......" and so on -
how do i convert a binary string into hex in basic?how do i convert a binary string into hex in basic?
how do i convert a binary string into hex in basic? -
Chompston Mazes in SpecBASAfter the discussion in ASH-II's Pacman thread, I checked out the link there about generating 2D Pacman style mazes. This one was quite good fun, …
... . Then we have a few string variables. There's a good ... 2 and 4, and a string (e$) with all four directions ... $) to convert back from characters (bytes) to numbers.
[code ... -
Proportional fontsI've been doing some proportional font drawing, purely on C level at the moment, but it's orders of magnitude slower than I'd want it to be. It's sti…
... : glyphs are stored as 8 bytes each (plus a byte for ... scanline and scans the printed string eight times, and another that ... -
Less MIA for SPA2 again - Rainbow Islands (1990)(Erbe Software)[+3 disk][re-release]Hi all :) dsk image: [url="http://forest.no-ip.org/wos/rie/Rainbow%20Islands%20(1990)(Erbe%20Software)(Side%20A)%5Bre-release%5D.dsk"]forest.no-ip.…
... dsk version have just 3 bytes difference ...
some history ... /> [15:26] there are 3 bytes difference between the images, in ... ] in the ERBE version the bytes are 49, in the other ... be in some kind of string table. It doesn't look ... -
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 ... ;HL back to start of string
dec de ;decrease number ... ,lp
ret
;
string:
db '00000' ;16 bit ... -
flash in a stringhi, is it possible to store flash in a string? u can store colours, bright, etc.
hi,
is it possible to store flash in a string? u can store colours, bright, etc. -
Look whats possible in 924 bytesSo, finally after over a year of development and nearly 25 years since I first designed the graphics, I've actually made it to the point where this i…
... />
The graphics are 444 bytes, whereas when I first designed ... long way to go, saving bytes here and there, but as ... -
ZXSCLZF - Yet another Screen CompressorQuick disclaimer before I continue, this compressor does not shrink screens as small as some of the others posted here, in particular the very good z…
... -31 means just paste literal string length 1-32
// ... // full LZF can use addition bytes to go beyond 256, I ... ]; //split number into 2 8bit bytes for algorythm
} rr ... /> ;;
;; copy L(b) bytes from one part of the ... -
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 ... character it reads in the string a$ is a number or ... -
1k Chess (was the 924 bytes thing!)Hi, I've decided to do a major rewrite of large parts of the code for the isometric Chess thing that I've been messing with. It got to the point, …
... 'backup' the line of 4 bytes from the screen and put ... is restored to the 4 bytes on screen.
Both ... -
A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…
... weighs in at 283 bytes and defines six controls— ... -ctrs ;length of string
call 8252 ;print string
... key is pressed
;(6 bytes)
;————————————————BEGIN REDEFINING ... +1),hl ;inject # of bytes to check into LD BC ... -
Rainbow Python (with code length less than 150 bytes).[url="http://zx-pk.ru/attachment.php?attachmentid=64971&d=1523562006"]Original with 93 bytes of main code.[/url] ([url="http://zx-pk.ru/threads/290…
... ;d=1523562006"]Original with 93 bytes of main code.[/url] ([url ... modification 1 (without texture, 145 bytes of main code).[/url]
bytes of main code).[/url]
Random-Access to Microdrive FileI am working on a BASIC program to backup a microdrive text-file to standard tape array-file. To backup a text-file from one microdrive to a secon…
... stream area to a normal string S$. Many thanks to Battle ... a normal string S$. I use the first 9 UDG bytes to ... ]any[/i] of the 512 bytes-length sectors available within my ... to overwrite the [i]32 bytes-length Microdrive-map[/i] to ...Printing text, part MMXIIXI'm pretty sure there's been a zillion threads about this already, and I don't think it's the first one by myself either, but here goes. Proportiona…
... there. Started from my test string taking over two frames and ... iy to point at input string
ld c, 6 ( ... per row, copy runs with string)
ld a, -5 ( ... br /> ; instead of all 8 bytes of a glyph at once ... we're at end of string
inc iy
...A couple of random questions......because, why not? (1) USR0 mode on the +3/+2A/B I know of its existence, I know how it's used, and I have some games that require it to work o…
... (seemingly random string of characters that holds all the required bytes)
