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Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... screen the only difference) lies in swapping the address lines the ... is much easier to do in machine code than in BASIC)
It is ... thaught back then. Make the machine work, work well, and cheaply ... could draw everything else, and in Color!
Sinclair took ... -
Calculating the address of a pixel?Hi Folks, Is there an easy/quick way of calculating the memory address of a pixel? So for example, if I wanted to "plot" pixel at screen coordinate…
... is much easier to do in machine code than in BASIC)[/QUOTE]
Fine ... thaught back then. Make the machine work, work well, and cheaply ... the early Spectrum...
Make machine work: check
work cheaply ... don't have a time machine, idle suggestions as to ... -
Memory upgrade for ZX Spectrum 16/48This is external memory upgrade for ZX Spectrum models with 16kB ram. Can be connect also to 48kB models, but need remove 8 dram chips (from sockets …
Would it not operate in that 128K hybrid mode, with flashing K cursor, but access to 128K? If an AY magic is also present, as long as the Sound is programmed in machine code, it should be able to run 128K sofware, shouldn't it? -
Designing a game.Hi all Lets say that i have been impressed with the games being created by guys on WOS and want to have a shot at making a game myself,my ageing know…
...
If you are interested in machine code, download some tutorial book from ... to look at others code. Today people don't ... protect their code jealously, you can look ... full game in only 1 kB of code so you' ... all that full 40kB of code.
And ... -
This might be something new[img]http://www.711chan.org/test/src/130427925559.png[/img] Have a look at this screenshot of my emulator ZX82. Notice the copyright message? That's…
... yet as getting stuff in and out of HDF ... divIDE somehow handle it in addition to handling the ... to the IDE bus? In the latter case, it' ... SpecBAS will run programs written in Sinclair BASIC, but there' ... program, or from a game in machine code. That's the idea, ... -
Definitive list of games incompatible with +2A/+3 and of compatible versions (if any)I am trying to compile the definitive list of games which are incompatible with the +2A and the +3 and of their compatible versions, if they are pres…
... to USR0 mode from the machine code loader. MegaLZ is just compression ... copy of the basic loader in machine code. The original doesn't work ... has different syntax for paging in basic. The banks uncompress the ... -
ANN: EsxDos 0.73 released (third party - not mine)Papaya Dezign have finally released their firmware/OS for the DivIDE interface. Go get it from [url]http://www.esxdos.org/files/esxdos073.zip[/url]…
... can't be difficult to code a file browser (something similar ... for them to go and code something. Doesnt even need to ... a seperate file browser coded in machine code would be just fine :) -
Print TextHow do i print text on the bottom left row(memory location in attribute 23295) of the screen in assembly? I understand the parts better on paper and …
... are - in crude terms - just emulating BASIC in machine code. If you ... you want with your code. This lack of colour ... told your emulated BASIC code to change them first ... the plague but.....
[CODE] ld a,16
... 4
rst 16[/CODE]
...seems right to ... -
Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…
... , story and dialogue I had in mind arn't actually going ... memory. The screens are stored in ram with a format that ... text somewhere on disk. Depacker in machine code is ready too. So if ... -
Move objectHi again, I am using paper colors to represent game objects. I have a "paddle" that is 4 pixels wide. I save its position as a 2 byte word in memory…
... /> What are you programming this in?.. BASIC, assembler, C, forth, ... to your question will depend in part on how your ... hand side of the character)(In machine code, something like this method ... draw it, particularly if coding in machine code (Its easier to draw ... -
Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…
... a tape saving/loading routine, in Machine Code obviously. The second requirement is ... be fit within 500 bytes, in contended memory, as I used ... :-P:-P
(In the meantime I'm just ... -
Why doesn't my routine work?I have a "level" defined by 504 bytes (28 squares across x 18 squares down) I'm trying to write a routine that will take an X,Y coordinate in pixels…
... a tape saving/loading routine, in Machine Code obviously. The second requirement is ... be fit within 500 bytes, in contended memory, as I used ... :-P:-P
(In the meantime I'm just ... -
Recommend me an easy to use assembler![deleted]
... makes sense to be coding in that fashion because you ... able to instantly see your code working or not working ... re more comfortable with programming in machine code and your projects inevitably ... spiral in size and complexity using ... -
List of existing games that needs a port to zx spectrumPlease post here the games that exist in other platform(s) but does not exist in speccy. Please keep in mind this is not a to-do list, so don't hesti…
... it replaced the old Atari code for font handling/scrolling/scaling ... Much of the original code was written in C and compiled, as ... ) with bespoke code written from the ground up in machine code, and made ... a result of the improved code, much quicker, smoother and ... -
Wolfenstein / Doom for 48k SpectrumHi, is there any game / demo of this kind that runs on 48k machines? Thanks.
... as I can see, is in 48k...
Here is ... failure to do anything good in machine code would suggest that I'm ... -
Sinclair Programs uploaded.I've just uploaded a ZIP containing all the 'Sinclair Programs' programs and the instructions for each one. (Well all the ones from 'The Type Fantast…
... Programs' there were not typed in yet (according to 'The ... Page - May'85
Morse Code - Peter Ford - Apr'84
In Machine Code) - Tony Rickwood - Mar'85< ... Harris - May'84
Tootles In The Pit - John Lonsdale - Jan ... -
machine code loadercan someone have a look at this loader and break down what its actually doing and also how i can stop it from executing the 2 loads of headerless blo…
how would i go about loading the block from off the disk in machine code?
it was so much easier to get dizzy 2 and 3 running off disk lol -
Souping up my Spectrum+ 128k ToastrackI wrote a small piece on the various things I've been doing to my ZX Spectrum+ 128k toastrack, primarily getting it working with the bright output an…
... (mostly capacitance) it's in makes the output anything but ... vertical scale. Notice the decrease in signal magnitude, it's quite ... making shorter and longer pulses in your PWM pulse train, ... (which with a program written in machine code, you can).
... -
Address of monitor to load emulator files into real SpeccyI have a monitor/debugger that can load data over serial port really fast. Now I would like to extend it to load standard emulator files over the ser…
... bytes, which will just result in a small amount of screen ... program? Majority of games are in machine code and loaded after BASIC part ... -
Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…
... game Football Manager written entirely in BASIC. This game was number ... one in the software charts for a ... other games were entirely written in machine code if I recall correctly. It ... -
Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…
It's worth comparing Football Manager 1&2 as the first one's written in Basic and the 2nd in machine code. -
Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…
... all for the Z80 processor in the Speccy. Technically speaking, ... someone says they're programming in 'Machine Code', they're probably not; ... all the instructions, in alphabetical order, their size in bytes, the ... A,5" then the code is 3E 05 (in hex, 3E for ... -
Where to start?..Hello, First off, sorry if this is in the wrong and sorry if the questions I'm about to ask have been asked and answered numerous time! Little back…
... someone says they're programming in 'Machine Code', they're probably not; ... all the instructions, in alphabetical order, their size in bytes, the ... my own comments/thoughts/discoveries in the margins of physical ... A,5" then the code is 3E 05 (in hex, 3E for ... -
Barleywood Z80 Simulator LicenceHi All, Does anybody know if it is still possible to get a Licence for this Simulator? The reason I ask is that I'm currently using it to develop a…
... [COLOR=blue]assembled program[/COLOR] in machine code.
Some cross ... Amstrad computer mixing your code with computer ROM and ... development tools for each machine to work further on ... slight modifications to run your code on different platforms. Each ... -
Up/Down Left/Right scrollCan anybody give a newbie some pointer to simple one char scrolling by pixel? I've looked at a lot of resources, but as you can imagine, it's all a …
... !
Does anyone have "Machine code sprites and graphics, for the ... , minutes after Mikrogen expressed interest in the game I was writing ... out how to do sprites in machine code!"
Edit: A library ... -
Dig dug/Mr Do type gameA few years back my cousin had a battered old tape with a Dig Dug/Mr Do type game on it. It had apples you could push/drop and a snake that chased …
... from.
It was in machine code and quite addictive! -
BezerkI don't think that Bezerk was ever converted to the Speccy and I've always found it a playable little arcade shooter... And Android One doesnt count!…
... arcade version and written in machine code. I think I played ... 'm certain it was written in BASIC!
... 16,660 on Berzerk. In October of the following ... top-ten list twice in fifteen minutes, just a ... game enemy in history to kill players in real-life" ... -
Xor-shift random number generator for Z80[QUOTE=Patrik Rak;320244]Come on, people, [URL="http://www.jstatsoft.org/v08/i14/paper"]xor-shift generators[/URL] devised by Marsaglia, that's the w…
Is there any quick way of doing this in machine code that doesn't involve a divide?
For a range where you can't just use an AND? -
RND CommandsExactly how random are they? Reason I ask is I'm using 4 of them to generate a random number, the value of which then assigns movement commands to f…
... /logic of doing things in BASIC will help me ... and shoehorn more powerful code into those structures (does ... a routine to work in machine code then I'll write ... trace errors and debug code in BASIC, then do an ... BASIC lines as comments in the assembler listing so ...
