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  • Flood FillHi Folks, Can anyone point me to a flood fill that I can call from ZX BASIC? I have looked through the archive and although there are posts about…

    ... want something like:

    * Machine code
    * Works from any memory ...
    Paddy Coleman Paddy Coleman December 2015 Development
  • Problem with BC corrupting after DJNZJust for fun, I'm messing around trying to get the level maps from Lemmings to display on the screen with machine code. It's been ages since I did an…

    ... display on the screen with machine code. It's been ages since ... am trying this....

    [code]
    MAIN LD HL,50213 ... down etc...
    RET
    [/code]

    Apart from not ...
    mulder mulder January 2016 Development
  • Can anyone show a slight diagram of how pokes work in a jet set willy game for example?I know its kind of something to do with machine code and Memory addresses etc but would be nice to see a youtube video or some drawings etc ? .Many t…

    I know its kind of something to do with machine code and Memory addresses etc but would be nice to see a youtube video or some drawings etc ? .Many thanks,John
    spaceman41 spaceman41 January 2016 Games
  • Hacker needed (Opus Discovery)Hello, I once was in contact with a guy who converted some games to Opus format. The contact was via the PM function here on WOS, but after the WOS-u…

    ... . The loading routines are in machine code, so this is nothing we ...
    Speccyman Speccyman January 2016 Sinclair Miscellaneous
  • Comparison of RS232 port on Interface 1 with that on Spectrum +3/+2AHi everyone, I'm writing a tool (in machine code) to transfer data (for example, an emulator snapshot) between a PC and a real ZX Spectrum, over t…

    ... m writing a tool (in machine code) to transfer data (for ... I then modified the code to work with the ... the serial-port driver code in the Interface 1 ... being that the +3 code accesses the serial port via ... wheras the Interface 1 code uses the ports on whatever ...
    Georgeo Georgeo February 2016 Development
  • Matthew Smith's Andre's Night Off in C&VG - did he really write it?Despite it being written in BASIC, Andre's Night Off is not very good - so what happened exactly? Was the hyperbole surrounding the type-in so much h…

    ... time that were written in code and you had to knuckle ... just knock out a quick machine code routine, it probably would have ...
    SteveP SteveP February 2016 Games
  • Mastering Machine Code Toni Baker ZX SpectrumHi, Does anyone have a good and complete condition copy of the above book for sale? Good price paid. Please PM if you do. Thanks

    Hi,

    Does anyone have a good and complete condition copy of the above book for sale?

    Good price paid.

    Please PM if you do.

    Thanks
    jonesypeter jonesypeter March 2016 Wanted
  • PROSM Tapes - Short programs embedded in Instagram videosThis is a project of mine which involves embedding short arcade games into the audio of Instagram videos. It was originally meant to be Vine videos, …

    ... entry, British Telecom Switchboards. Full machine code programs can be embedded and ...
    PROSM PROSM April 2016 Announcements
  • 140 characters Basic game contestHey there, I've announced a new micro contest on my blog (in Czech language only). However, it might be interesting also for the non-Czech/Slovak …

    ... example:

    [code]1 PRINT "Hello world"[/code]
    - are 21 ... 48K Sinclair BASIC syntax
    [code]1 FOR f=10 TO ...
    Factor6 Factor6 May 2016 Sinclair Basic
  • Add with Carry ExampleHi, I have been really struggling to understand this simple example from Mastering Machine Code and I wonder if anyone can help? I have include…

    ... this simple example from Mastering Machine Code and I wonder if anyone ... think is happening:

    [code]LD DE,3385
    LD ... ,L ;C = AE
    RET[/code]

    Therefore BC = 4CAE ...
    jonesypeter jonesypeter June 2016 Development
  • Reading Spectrum+ keyboard versus rubber keyI've started trying to learn Spectrum machine code after a 30 year break. I've encountered something that's puzzling me and I'm hoping that someone c…

    ... started trying to learn Spectrum machine code after a 30 year break ...
    LoonyJetman LoonyJetman July 2016 Hardware
  • DivMMC and +3 BASIC questionHi everyone, sorry if I'm about to tread a well-worn path here but I looked and looked, and I found something in the DivMMC manual but I'm not sure i…

    ... late 80s, some BASIC, some machine code, and I'd very much ...
    Robsoft Robsoft July 2016 Hardware
  • Line DemoI was looking in the source code of another game (that Akalabeth game), with lots of line drawings. The difference was that they don't use the PL…

    ... was looking in the source code of another game (that Akalabeth ... now I've used some machine code to create a LINE command ... .

    EDIT: Note, the machine code used is stored at 65001 ...
    Timmy Timmy August 2016 Sinclair Basic
  • bin to tap with basicI have compiled some machine code to binary. How I can convert it to tap (or tzx, doesn't matter) with custom basic part? Of course, I can create …

    I have compiled some machine code to binary. How I can ... basic, and later save basic+code manually. But I prefer to ...
    Bedazzle Bedazzle August 2016 Development
  • New Game (2016 revival): A Yankee in Iraq (1992)Hello everyone, Way back in 1992, I wrote a shoot-em-up called [i]A Yankee in Iraq[/i]. The entire game was written in Sinclair BASIC. Recently, I…

    ... tips on loading BASIC using machine code can be found here: [url ...
    Ast_A_Moore Ast_A_Moore August 2016 Brand new software
  • So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…

    wrap the machine code calls inside a 'RST #28; ... -daaa, here it is:
    [code]
    DEFB #0D ; hide the ... BC above ^^
    RET
    [/code]

    and here's ... to write any model-specific code to switch mode
    < ...
    The_Bert The_Bert September 2016 Sinclair Basic
  • Time Gate graphics patchI've rediscovered Time Gate and one thing I don't like about the game is that it's hard to remember what's what in the status indicators. The manual …

    ... . I'm no good at machine code but getting better at Boriel ...
    textvoyage textvoyage October 2016 Games
  • So what is wrong with this program ?Using those basic copying buffers routines I wrote this spiral animation, absolutely wasteful it is of memory yes, but I'm only just learning machine…

    ... I'm only just learning machine code. It draws four frames dumps ...
    ivanb303 ivanb303 October 2016 Sinclair Basic
  • RANDOMIZE USR, PRINT USR etcHello just wondering why is it called RANDOMIZE UsR what does randomising have to do with it ? When calling machine code routine from adress x you ty…

    ... do with it ? When calling machine code routine from adress x you ... USR 65368 it resets the machine! Why doesn't it print ...
    ivanb303 ivanb303 October 2016 Sinclair Basic
  • Best place to start learning assembly on WOS ?So I'm pretty new at this forum but not the Speccy so my BASIC is pretty good. I can see lots of resources on WOS for doing machine code/assembly but…

    So I'm pretty new at this forum but not the Speccy so my BASIC is pretty good. I can see lots of resources on WOS for doing machine code/assembly but where do you guys think I should start ? I'm interested in making games and demos mainly
    ivanb303 ivanb303 October 2016 Development
  • THE LIGHTBULB EFFECT You know what that is? Like how cartoonists depict a bright idea by drawing a lightbulb over the head? When I was trying to work out the lengt…

    ... /> Actually a lot of the machine code stuff makes no sense at ...
    mik3d3nch mik3d3nch November 2016 Chit chat
  • New Preview Demo - Vegadvent Adventure Maker for the ZX VegaHello, I'd like to share with you my latest title. It's an adventure maker for the original 2015 model Vega and a work in progress. The idea was t…

    ... and if necessary with 'proper' machine code as time goes on (e ...
    LoadingScreech LoadingScreech November 2016 Brand new software
  • Sound adviceHappy New Year everyone! I want to write some more Spectrum games this year and I want to improve the sounds in my games. Can anyone recommend a "qui…

    ... if it can export the machine code to a little binary file ... know a little bit about machine code (I'm not great at ...
    textvoyage textvoyage January 2017 Development
  • Random Numbers, USR Return Values & Timing BASICI've been trying out Jon Ritman's random number routine, published in Your Sinclair Aug'87. Apart from a timing comparison I also did a frequency ana…

    ... .82 seconds.
    [code]
    Count Sum Deviation ... 30227971 -140
    [/code]
    "This is the ... part 4 of the "Machine Code Calculator" series in ZX ... /> 3276 31940950 0
    [/code]

    http://www ...
    Battle Bunny Battle Bunny January 2017 Sinclair Basic
  • How difficult to do a Harry Price?how difficult do you think it was to do a Harry Price and do a total Mod of a magic knight game? He must have owned a multiface thingy to look at …

    ... thingy to look at the machine code right?
    Then he must ... so did he at least code that?
    slenkar slenkar January 2017 Games
  • "ZX80 Brain" RPN CalculatorIt is at times like [url=https://www.worldofspectrum.org/forums/discussion/54176/depression]when threads such as this are posted[/url] that I get the…

    ... the keypress with LET i=CODE INKEY$, then z(i) would ... means, I know nothing about machine code, and I'm never going ...
    The Mighty Dopethrone The Mighty Dopethrone March 2017 Sinclair Basic
  • Fun little program but why do I get Out of Memory ?This is very simple BASIC/machine code program. You can rotate the scene with "b" and "m" but I seem to get an error going in one direction and not …

    This is very simple BASIC/machine code program. You can rotate the scene with "b" and "m" but I seem to get an error going in one direction and not the other.

    https://www.dropbox.com/s/vw0ilfdosnnod35/Frames4.z80?raw=1
    ivanb303 ivanb303 March 2017 Sinclair Basic
  • Screenshots from my old BASIC gamesI have written several dozens of games in 90's. They haven't remained, so I show only screenshots 'for history'. Some screenshots are real, but all…

    ... /> Then I have learned a machine code. Aladdin, The Dark, Metal Man ...
    Oleg Origin Oleg Origin March 2017 Sinclair Miscellaneous
  • Less MIA - Peker AssemblerMIA and also missing from the database! [img]http://oi66.tinypic.com/16hw67a.jpg[/img] Peker Assembler TZX https://app.box.com/s/vdniq5c6r30…

    ... came with the Peker Machine Code Course, which unfortunately went ... To load elsewhere use load "" code ADDRESS

    To ... RANDOMIZE USR 59000 - compiles the code
    RANDOMIZE USR 40000 - ... runs the compiled code

    REM begin ...
    Swanny Swanny April 2017 MIA/STP/SDP
  • Basic versions of popular Spectrum games?A couple years ago I saw a game in Basic which was part of a Spanish competition, and it looked amazing. I forgot most details, but remember it resem…

    ... all know the advantages of machine code. But when I see something ...
    zxbruno zxbruno April 2017 Sinclair Basic
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