-
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^…
... example be included within a function defined by DEF FN)? -
Broken Spectrum 48k: Faulty rams?Hi! I recently bought a used Spectrum 48k which works perfectly apart from not recognizing the upper 32k ram (so making it a Spectrum 16k that way).…
... capacitor? Or what it's function is? I'm very sure ... -
Spectranet: Basic extension to get directory listingThis is a short basic extension for the spectranet to assign a directory listing to a basic variable. No more screen scrapping required! It could be…
... return a value from these function calls I've created so ... -
"Chronos": how fast should it really be?I was reading [URL="http://timfollin.pwp.blueyonder.co.uk/Archive.htm"]Tim Follin's webpage[/URL] the other day and came across a curious remark abou…
... to click through each individual function call within the main loop ... -
Homebrew Microcomputer design...getting ICs and stuffFor anyone interest in homebrew microcomputer design or just making add-ons and electronics gizmo's..this might be of interest. Sourcing affordable …
... Ext video input...Genlock/Superimpose function.
V6366 (plus ... -
SpecBAS 0.775 released!Hi all - me again :) SpecBAS has been updated again, and a whole load of new stuff has been added. Not many bugs fixed (none reported, and I only fo…
... all open windows
MUSICPOS function - returns the position of the ... music in seconds
MUSICLEN function - returns the length of the ... -
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…
... TXT2EMU has loaded it the function will work on the 128k ... -
Residos with Task Manager crashes on NMI button pressI finally installed my DivIDE Plus which I actually bought about one and a half years ago. (I have way too little time for this project :cry: .) Ever…
... project :cry: .) Everything seemed to function fine, untill I installed the ... -
Trigonometric find angleHi guys, anyone knows a formula to calculate an angle between two coordinates, using basic?s function ATN , recent programming tools have ATAN2(dy,dx…
Hi guys,
anyone knows a formula to calculate an angle between two coordinates, using basic?s function ATN , recent programming tools have ATAN2(dy,dx), but im having trouble using atn.
thanx in advance. -
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…
... , reducing it to a simple function call of the form: GO ... it's doing with the function parameters, but so far it ... $ assignment must be outside the function call, due to the STR ... ]
--
The function works with string slicing either ... -
display file addressing; screen slicingWhile working on this Compendium I'm updating or rewriting a lot of stuff. One thing I eventually came to appreciate was the simple & clever way in w…
... which minimised the number of function calls by setting the block ... -
generating a pre-defined list in an un-defined sequenceI've decided to become a drunkard, to which end I've been drinking a whole bottle of beer in one day (whereas normally I'd make it last 2 or 3 days).…
... such a thing as a function which will generate a list ... 22528->23295, call the function 768 times and it would ... -
Hardware description - PLUS D interfaceThis new thread will contain onformations of different ZX devices. Some devices contain manuals, schematics or firmware for some chips, but some peop…
... to know brief informations about function or port adress. Manuals often ... -
Hardware description - DivIDE interface[B][U]DIVIDE interface / DivIDE 2k11[/U][/B] [B][U]The main description[/U][/B] DIVIDE is IDE interface with own external memory. Thanks to very goo…
... [/CODE]
Control port function:
- bits D0 and ... -
ZX spectrum 128K + 2 (Grey one :)Hi all, I'm trying to revive a dead ZX 128K +2 (the grey one). The regulator was damaged and seemed to be feeding 7.8Volts onto the pcb. Yikes ! I…
RND cyclical behaviourGood evening. I'm playing with RND function to show its cyclical behaviour, i.e. after 65536 calls to it, the next one will return the same value of …
... /> I'm playing with RND function to show its cyclical behaviour ...Adding a pause key to ArkanoidHaving rediscovered the simple pleasure of playing 1980s games on genuine 1980s hardware, I've also remembered that emulation can provide a feature m…
... a routine implementing the pause function; where should we put it ...Hardware description - MULTIFACE 3[B]Hardware description - MULTIFACE 3[/B] This is description of MF3 clone, because I can't find more about original interface. Schematic and PAL ch…
... this ports is ignored) + enable function of MAGIC button
[B][COLOR="Red"]Function is not tested because I ...New ZX BUS PROTECTOR / +3 FIXER BOARDNew version of ZX BUS PROTECTOR: [URL="http://velesoft.speccy.cz/protector.htm"]http://velesoft.speccy.cz/protector.htm[/URL] [IMG]http://velesoft.s…
... ]
Some info about function (old version, but similar) you ...Can a guy that traveled on the short bus learn machine code...Hmmm So after some soul searching I figured it was time to finaly nail spectrum machine code. Its so frustrating to sit infront of a basic listing w…
... />
To see what the function has returned, you type in ... />
[U]INC, a boring function for a boring person.[/U ... that going over the LD function will probably be in order ...Compiler conventions for passing args/return valuesI've been mulling over this for a while, but I can't spot it covered anywhere. There are various methods for passing args and return values between …
... for 8bit return values). For function args, i'd always have ... like to limit this to function args and return value passing ...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…
... in the dynamic array hashing function
A bug in BIN ...MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …
... this routine to handle that function in machine code, so the ... table and vice versa. The function FN i(d,a) defines ...SCREEN$ bug fixI've been using the SCREEN$() function recently for reading data off the screen rather than taking up space with an array and I got fed up with the s…
... 've been using the SCREEN$() function recently for reading data off ... /> ;becomes the output from the function instead of BC
pop ...Getting aquainted with the IF1bisToday, fifteen days after dispatch, the IF1bis arrived at my door. In perfect order. No customs, no TVA and no handling fee involved. The arrival of …
... is connected to a specific function. I found that synchronising with ...Documentation of ZX Spectrum built-in functionsHi, Is there a documentation of the built-in ZX Spectrum 48+ functions (assembly)? I am thinking about something like the documentation included in …
... , there was even an undocumented function I was using in assembly ...Rendering clipped glyphSometimes you need to render a glyph of arbitrary size to the screen. And clip it. For example: drawing a mouse cursor means combining drawing of a…
... inside a window using a function like this -
[CODE ...Dominion by Pandora - helpI tried yesterday to play a little bit this game loading the covertape in my +2A and the game actually looks very interesting, or at least the idea. …
... it looks like the shooting function is limited to destroy doors ...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…
... don't want the listing function there are elements of the ... to be called from the function:
DEF FN s$(r ...FZX Driver for z88dkAn fzx library for z88dk can be downloaded [URL="https://drive.google.com/file/d/0B6XhJJ33xpOWM2hWNjAxMVkxaEk/edit?usp=sharing"]here[/URL]. The libr…
... also be set through this function. The difference between using this ... it directly is that this function will check the x coordinate ... than "width" pixels. The function will also return if a ... string is reached. Note: the function terminates on newline and AT ...
