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<1…12131415161718…34>
  • Machine CodeCan anyone point me to an online tutorial on ZX Spectrum Machine Code, please?

    Can anyone point me to an online tutorial on ZX Spectrum Machine Code, please?
    pluvia pluvia August 2004 Sinclair Miscellaneous
  • Wanted: Machine Code Sprites and Graphics BookWould anyone be willing to either sell or swap this book. Its full title is Machine Code Sprites and Graphics for the ZX Spectrum : A complete guide…

    ... title is

    Machine Code Sprites and Graphics for the ...
    dmsmith dmsmith August 2004 Wanted
  • Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…

    Below is my WIP code to do smooth screen wrapping ... be most welcome

    [code]
    ; ********************************************

    ; Char Offset ...


    END
    [/code]
    robpearmain robpearmain August 2004 Development
  • IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it Note, for 48k spectrum using TASM [code] ; ***********…

    ... spectrum using TASM

    [code]
    ; ********************************************

    ; Char Offset ... /> PUSH IX

    ; ADD CODE to animate, i.e change ... /> END



    [/code]
    robpearmain robpearmain August 2004 Development
  • Smooth Color Masked Sprites using fast page flip on 48kHere is a quick demo of using char based sprites using the Page flip method: a) Background is copied to buffer b) Sprites drawn on buffer c) Buffer …

    ... too.
    [code]
    ; make tasm understand other assembler instructions
    #DEFINE ...


    END
    [/code]

    _________________
    [B ...
    robpearmain robpearmain September 2004 Development
  • Smooth Masked Sprites using fast page flip on 48k Part 2Ok, After all the suggestions in Part 1, which were all excellent (Thankyou), I opted on the following: I have 2 x 6k Offscreen areas (Yes, that's …

    ... code (TASM) is here

    [code]
    ; make tasm understand other assembler ...


    END
    [/code]
    robpearmain robpearmain September 2004 Development
  • Fast division in machine codeHi Does anyone know what is the fastest way to divide a 16 bit number by 24 in machine code. Derek [ This Message was edited by: dmsmith on 2004-0…

    Hi

    Does anyone know what is the fastest way to divide a 16 bit number by 24 in machine code.

    Derek

    [ This Message was edited by: dmsmith on 2004-09-24 20:04 ]
    dmsmith dmsmith September 2004 Development
  • Index register subtractionHi, Just wondering if there a way to perform SBC HL,BC on the IX or IY registers. I can't find an op code for it, and my assembler doesn't recognise…

    ... find an op code for it, and my assembler doesn't recognise ...
    dmsmith dmsmith September 2004 Development
  • For listings/demos what assembler should we useI am using TASM (I am not recommending this, I am just stating fact). When we give listings of assembler source, often we have to convert from assem…

    I am using TASM (I am not recommending this, I am just stating fact).

    When we give listings of assembler source, often we have to convert from assembler to assembler, can we agree on a default one we should use for example listings?
    robpearmain robpearmain October 2004 Development
  • AssemblerI would like to have ago at writing my own assembler for the PC to create z80. Can anyone recommend any books on writing assemblers. Is there any ope…

    I would like to have ago at writing my own assembler for the PC to create z80. Can anyone recommend any books on writing assemblers. Is there any open source projects ?
    Mr Millside Mr Millside October 2004 Development
  • Need some help making a BASIC gameI'm creating a text adventure in 128 BASIC (I don't like using the 'keywords' in 48 BASIC - It's slow and annoying!) called "The Legend of The Red Dr…

    ... ? If so, what is the code?

    2.) I've ... such as picking up an object. A player could type in ...
    pottyboy pottyboy November 2004 Sinclair Basic
  • Love letter hidden in source code?Hi all, Back in the early 80's there was a 48k game called (see note) and at about that time me and a couple of mates were into disassembling and ra…

    ... and raking through game hex code for fun. Hidden in the ...
    IanSJohnston IanSJohnston November 2004 Games
  • What if Code Masters made ...?If Code Masters branched out into writing other types of software, what would they name them? A virus protector : Advanced (or Super) Infection Cont…

    If Code Masters branched out into writing ...
    Ian Hamilton Ian Hamilton November 2004 Sinclair Miscellaneous
  • Announce Pasmo 0.5.0Hello. I have released the 0.5.0 version of Pasmo, multiplartform z80 cross-assembler. A bunch of new this time: New tape image formats generated:…

    ... Pasmo, multiplartform z80
    cross-assembler.

    A bunch of ... Basic loader.

    8086 code generation from Z80 sources, that ...
    NotFound NotFound December 2004 Development
  • OT: Where to start with assembler / MC on the PCHi, my apologies for posting on a subject unrelated to the Spectrum. What I would like to know is what's the best place to start (ie. Development pa…

    ... packages / books) for programming in assembler on the PC?

    dmsmith dmsmith December 2004 Sinclair Miscellaneous
  • OT: Disassembling 8080 codeAm I correct in believing that the Z80 is 100% backward-compatible with the 8080, in particular that a Z80 disassembler such as DZ80 will correctly d…

    ... DZ80 will correctly disassemble 8080 code, although of course the mnemonics ...
    robert@fm robert@fm December 2004 Development
  • ZX SpinIs it possible to use the Z80 Assembler in spin as a means of entering mcode? I'm struggling on some of the basics like SCREEN EQU 4000h. It keeps …

    ... possible to use the Z80 Assembler in spin as a means ... the assembler itself? Once input how do I save as "CODE"
    choccy48K choccy48K March 2005 Development
  • Problems with FUSE.I'm attempting to install FUSE in the Debian box I have at work. I've downloaded and installed all the necessary libraries, and have everything corr…

    ... the following error:

    [code]fuse: error while loading shared ... open shared object file: No such file or directory[/code]

    na_th_an na_th_an April 2005 Emulators
  • Speccy Game Source CodeIs there a way to look at the tape files or convert the tape files to read the source code? Also, is there an archive of source code for various old…

    Is there a way to look at the tape files or convert the tape files to read the source code?

    Also, is there an archive of source code for various older applications?

    Thank you,

    Greg
    GregB GregB May 2005 Games
  • Saving BASIC code as CODE... can't start programHi guys! I'm trying to create an adventure game for the Speccy in BASIC, called The Legend Of The Red Dragon. I'm using the excellent BASin to code…

    ... using the excellent BASin to code it, and the game is ... to save each part as CODE. I save the game as ... CODE 30000, and I have created ...
    pottyboy pottyboy May 2005 Sinclair Basic
  • Emulators and game code'sHi everybody! I'm using RealSpectrum emulator...can i see and change game code's with this emulator? How can i do this? Thanks!

    Hi everybody!
    I'm using RealSpectrum emulator...can i see and change game code's with this emulator?
    How can i do this?
    Thanks!
    Bifaro11 Bifaro11 May 2005 Emulators
  • The Code - MIA?I have a spectrum game called "The Code". Has anyone heard of it? I can find no reference to it anywhere.

    I have a spectrum game called "The Code".
    Has anyone heard of it? I can find no reference to it anywhere.
    skel57 skel57 June 2005 MIA/STP/SDP
  • ANNOUNCE: BASin Release 12 ready for downloadWell, after a rather large break, BASin's latest incarnation is ready for public use. Probably. BASin is a Sinclair Spectrum development environme…

    ... SLOW directives for speeding up code whilst debugging
    ... /> A full featured Z80 assembler, capable of assembling every opcode ... for augmenting your BASIC code with machine code snippets - please ... wrap.

    Code profiling - measure the speed that ...
    Dunny Dunny June 2005 Emulators
  • ANNOUNCE: BASin Release 12 ready for downloadWell, after a rather large break, BASin's latest incarnation is ready for public use. Probably. BASin is a Sinclair Spectrum development environme…

    ... SLOW directives for speeding up code whilst debugging
    ... /> A full featured Z80 assembler, capable of assembling every opcode ... for augmenting your BASIC code with machine code snippets - please ... wrap.

    Code profiling - measure the speed that ...
    Dunny Dunny June 2005 Sinclair Basic
  • Push/Pop methodMachine code question: Could somebody explain, how do we use the stack in assembler to copy data from one place of memory to another? I've heard it i…

    Machine code question:
    Could somebody explain, how do we use the stack in assembler to copy data from one place of memory to another?
    I've heard it is one of quickest methods, faster then e.g using ldir or writing a loop.
    Is it true?
    Ralf Ralf July 2005 Development
  • PRINT AT in assembler Hello everyone, I am very new to this forums. Like perhaps many others I had a Spectrum as a child and did pretty much simple BASIC programming, bu…

    ...
    LD a,65 (character code)
    RST 16

    Rickard Rickard July 2005 Development
  • Suggestion for EmulatorsHi, Could I make a suggestion as to a feature to be included in future emulator updates. Not so much an emulator feature, rather a feature of the b…

    ... has a good built in assembler, however there are two features ... the Include directive, allowing source code to be spread over several ... frequently unroll loops in my code and the result is that ... code stretches over pages and pages.< ...
    dmsmith dmsmith July 2005 Emulators
  • Ghost & GoblinsIn one afternoon which you want to throw the +3 by the window, because the assembler or a inconsistent bug in the code, i take a break and lost the …

    ... the
    assembler or a inconsistent bug in the code, i take ...
    radastan radastan August 2005 Development
  • any tips for learning spectrum machine code?hello there, I have some experince programming in basic, both sinclair 48+ (just need to recall most of what i learnt :D ) and Quickbasic. anyway i a…

    ... intrested in learning spectrum machine code, can you give me any ...
    mestor mestor August 2005 Development
<1…12131415161718…34>

Latest Posts

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  • Machine Code Sprites Example Code Using Char Based SystemBelow is my WIP code to do smooth screen wrapping sprites using char positions and offsets, as opposed to writing direct to a line (0-191) and shifti…
  • IM2 Machine Code Sprites Example Code Using Char Based SystemFurther to my earlier post, here are sprites running using char method with IM2 driving it<br /> <br /> Note, for 48k spectrum using TASM<br /> <br /…
  • Saving BASIC code as CODE... can't start programHi guys!<br /> <br /> I'm trying to create an adventure game for the Speccy in BASIC, called The Legend Of The Red Dragon.<br /> <br /> I'm using the…
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