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z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…
... was such a thing as "machine code". 30 years later i've ... I understand exactly what the code is doing.
... br /> ld a,32 ; ASCII code for space.
rst 16 ... ld a,22 ; ASCII control code for AT.
rst 16 ... -
Rom routine for pixel addressDear all, Having my bi-annual 'lets try machine code' project again and have come up with a problem with the pixel address rom routine at 8874. …
... my bi-annual 'lets try machine code' project again and have come ... ,175 with the following code...
[code]ld b,175
rst 16
ret[/code]
The book says ... -
Top 10 WoS requests for improvements?Since WoS administrators are now requesting feedback on possible ways to improve WoS, I would like to share my thoughts about this subject, and encou…
... we should have categories "CONCEPT", "CODE", "GRAPHICS", "MUSIC" and "LOAD SCREEN" as ... -
Forum ThreadsJust a ramble on the forum layout I would like to open a discussion on the front 'home' page layout I like the layout but looking at it logically i…
... program + help with basic and machine code programming. (the basic thread could ... -
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 ... -
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 ... -
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 -
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 ... -
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 ... -
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 ... -
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 -
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 ... -
New game: Magical Tower Adventure - Mini versionStory: There is a story of a Tower somewhere in the evil lands, filled with monsters and other magical creatures. Many fighters have entered b…
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 ...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 ...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 ...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 ...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 ...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 ...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 ...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
< ...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 ...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 ...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 mainlyTHE 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 ...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 ...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 ...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?"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 ...New Game : Pilot AttackHi, My first ZX Spectrum game : [b]Pilot Attack[/b] [img]https://img.itch.io/aW1hZ2UvMTI0ODg1LzU3NTUxMS5wbmc=/347x500/kRvSqw.png[/img] http…
... ://youtu.be/nuuLNiDR_-s
Code, graphics and "music" by Misfit
