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How to write a simple BASIC* horizontal scrolling game (Tutorial) [b]How to write a simple BASIC* horizontal scrolling game[/b] In this tutorial, we will be talking about how to write a simple BASIC* horizont…
... recall correctly, SCREEN$ is implemented in the Spectrum by getting all ... Spectrum instead.
In fact, this is probably going ... implement this in the tutorial for the C (with minimal asm) version ... I'll write that part in asm too.
I ... -
Screen RatioAn interesting thing happened with my photos on facebook of my Spectrum setup with my new OSSC (open source scan converter). Some made a fuss (in jes…
... , I do appreciate that a circle is not going to be ... a "true circle" when represented on a video ... indeed in any form other than an infinitely large circle that conveys ... enough - to be considered a circle, in colloquial, human terms.
A ... -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
Top row is done now anyway. Rest should be easy I guess, but the beers have kicked in and nested loops in ASM are confusing and hard
[url=https://postimages.org/][img]https://i.postimg.cc/nzZG9bCX/toprow.png[/img][/url] -
How to disable the "scroll?" message?Hello. I'm a beginner Z80 assembly programmer and I decided to make a ZX Spectrum game to practice my skills and gain some more experience. I curr…
... could, looked at the x86 asm output from the C compiler ... more stuff.
Working in drivers did enable me to ... days people trying to program in ASM learn C first though since ... 's so much easier than ASM and it's almost as ... -
Sort 2 byte words (x, y) on ypos, also question about swap (DE), (HL)Well that was a lot of debugging ;) But if you want a routine which takes an array of 16 byte words x, y and then sort them on y (ignoring x), I'm…
... it was.
Bugs in ASM = weirdness escalates until you end ... -
Sort 2 byte words (x, y) on ypos, also question about swap (DE), (HL)Well that was a lot of debugging ;) But if you want a routine which takes an array of 16 byte words x, y and then sort them on y (ignoring x), I'm…
[quote="Paradigm Shifter;994777"]
Bugs in ASM = weirdness escalates until you end up very confused.[/quote]
Yup, that's why it's fun! -
What's the meaning of Stonehenge!It's killing me that no one knows why it was built 5000 years ago, Is it an observatory? For mapping precession of the equinoxes etc? A spac…
Yeah, from the Elvis Presley mountains. (Don't step on my blue stones)
Also, yeah. Myrddins precinct or something was the early name for Britain. According to the Welsh annals, he flew them over from an existing stone circle in Ireland. -
Console frameworkStill working on Specotron, but at the point where working out the diagonal lines collision is not good at beer o'clock. In the meantime I've knoc…
... like some magic. It is in a way.
To ... games on speccy and dabbled in wee bitties of stuff. This ... me trying to draw a circle in art class.
Hat ... -
Bresenhams circle algorithmI post here my final circle code to replace, if you want, the one in the ROM. It only uses integer math and runs very fast and is very compact. It is…
... asm
.org $8000
;Bresenhams circle ... algorithm calculates the locations of the pixels in ...
call circle
ret< ... y0
;******Circle ******
circle:
ld ... -
How to write a simple game in C+asm.This is just a link to an old post in Development, about a post of making a simple game in C for the Spectrum. It was suggested that this thread shou…
... link to an old post in Development, about a post ... of making a simple game in C for the Spectrum. ... that this thread should belong in this C forum as ... to-write-a-simple-c-asm-horizontal-scrolling-game-tutorial- ... which explains a bit more in BASIC what the game is ... -
colouring inexample: 10 CIRCLE 45,30,15 wot do i type after it to colour it in red?
example: 10 CIRCLE 45,30,15
wot do i type after it to colour it in red? -
Zaf-forth to Z80 compiler Build 5This forth like complier is changing almost every day with new items been added. Here is a new Zaf-forth word add it the sptword.fth file - which is…
... and past in notepad and save as circle-demo.ZAF ... /> =zxcircley
=zxcirclex
asm
ld a,(zxcirclex)
;"Circle-Demo"
;"Draws 30 circles ... screen"
."Random Circle Demo"
;"print message"
Docking in EliteThis is a pretty complicated game, but I want to learn how to play it since some people think it's the best game of all time. I've got the insruction…
... what you do to "dock" in the game. Say I warp ... then see a white ball in the distance which I assume ... also a transparent white outlined circle too, the purpose of which ...Best in-game music?Any platform, which is why this thread is here and not in Games. :) Nominate as few or as many as you like, in order or not. :) Mine (in this order…
... thread is here and not in Games. :)
... as many as you like, in order or not. :)
...
Mine (in this order) are:
5. Circle of Death (MAP11), [I]Doom ... being associated with them (in the last case, I' ...Bug in EMUZWINIt's quite minor actually and is in the Assembler. Ocassionally when assembling the ASM gives the wrong address to a label. For instance I used the l…
... and is in the Assembler. Ocassionally when assembling the ASM gives the ... I used the label CHARLOOP in a program. It didn't ... label began "CH" so the ASM thought it was a HEX ...Problem with rotating procedureHi folks! I wrote a proc in z80 asm, based on: x' = x * cos (z) - y * sin (z) y' = x * sin (z) + y * cos (z) I used a precalculated table of sin a…
... /> I wrote a proc in z80 asm, based on:
< ... . I suspect a circle on a screen, ... error in proc.
;============================================================================
;x.asm 2006 ...Help understanding some z80 asmI'm trying to work out how to represent the structure of a "sprite" in the SAM as "Grabbed" by SmallC. I can see the assembler implementation but I …
... the structure of a "sprite" in the SAM as
... If I can crack this in my mind it won't ... /> But what I see in the asm is this ( grabs from ... width, int length )
{
#asm
push ix
ld ... wrap the Screen base pointers in structures. Yes, I'm ...Fastest way to decide which pixel to paint in order to draw a straight line(after I saw "Bresenhams circle algorithm" in development forum, I decided to ask this in here) in fact, I want to accelerate a car towards a direct…
(after I saw "Bresenhams circle algorithm" in development forum, I decided to ... ask this in here)
in fact, I want ... pixel. since target changes position in every iteration, so a new ... fastest method to do this in basic?How do I load .ASM text files into an assembler ?I notice that the old Sinclair magazines contain assembler routines that someone has put into .ASM files. These files are text files. I have a copy …
... that someone has put into .ASM files. These files are text ... these assemblers suitable for loading in the .ASM files ?
So ... use the .ASM files without typing the assembler code in by hand ... Linux tool that converts the .ASM file into a .tzx/.tap ...Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…
... (over 32768) and memorable address in RAM
;initialise score
PRINCIPALLOOP ;label for the loop in the game that will execute ... and type something like mc30mintut.asm into the save box.
in the main Spin display ...How to export the symbol table in ZX Spin v0.666I've managed to resurrect some old cassette tapes with the machine code for Freeway Frog from the Spectrum Machine Language For The Absolute Beginner…
... have the complete freewayfrog.asm file as listed in the book?
reimport of exported asm in 7upI know it may seem a cryptic title but is there a way of importing an asm file ( created using the export data option within 7up) back into 7up or an…
I know it may seem a cryptic title but is there a way of importing an asm file ( created using the export data option within 7up) back into 7up or any other editing software , i have a bunch of asm graphic files and have lost the original sev files ???Audio Output Filtering in EmulatorsI am messing around with various beeper-related code at the moment and have a question related to the audio output from emulators... I've written s…
... unwanted high-frequency scratchy harmonics. In fact, it sounds exactly the ... /> Creating the same sounds in z80 asm running on SpecEmu or SPIN ...Do a load "file" with ASMFollowing the idea to build a menu with asm, now i need to know how to do a load "file". I can use the Rom routine but i am not sure if the rom rout…
... to build a menu with asm, now i need to know ... rom routine that is exposed in the documents is the classic ... me.
thx in advanceEmbedding external code in Z88DK projects (Beepola related)Hi all, I've been doing a few things in Z88DK, but I was wondering how I could link binary data compiled separately into my projects. Specifically I…
... been doing a few things in Z88DK, but I was wondering ... stuff. In engine.h which has this:
[CODE] #asm
quick - Zx80 ASM questionWhile I am ploughing through lots of ASM listings, one of my earlier adaptation attempts surprised me [B][asm code][/B] [code] org 32768 start: ld…
... am ploughing through lots of ASM listings, one of my earlier ... surprised me
[B][asm code][/B]
[code]
in register 'A'
inc hl ...Crazy Library failure in z88dkHello there my fellow WoS'ers yet another late night problem for the wee small hours I recently managed to get file-handling working very well, t…
... not defined
Error in expression _HAND_STATUS
File ... not defined
Error in expression _HAND_STATUS
[/code]
asm
zcpp -I. -DZ80 - ... \Zetr0\LOCALS~1\Temp\s4fo_.asm > C:\DOCUME~1\ ...
