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<1…11121314151617…34>
  • 48k Timing Tests...Here's v1 of the timing tests for the 48k Spectrum, with a little background [IMG]http://www.zxspectrum4.net/images/timing_test_v1.jpg[/IMG] [URL="…

    ... , like whole MEMPTR section in z80test.[/QUOTE]

    :smile: :smile ... can I find that pesky z80test? I've googled it without ...
    Madonna Mk 2 Madonna Mk 2 April 2010 Development
  • 48k Timing Tests...Here's v1 of the timing tests for the 48k Spectrum, with a little background [IMG]http://www.zxspectrum4.net/images/timing_test_v1.jpg[/IMG] [URL="…

    ... can I find that pesky z80test? I've googled it without ...
    Pegaz Pegaz April 2010 Development
  • Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…

    Thanks for your interest, koseidon72 and Pegaz. I'll answer your questions when I finish implementing MEMPTR emulation (just a few instructions left for z80test to pass 100% OK) ;)
    Madonna Mk 2 Madonna Mk 2 April 2010 Emulators
  • 48k Timing Tests...Here's v1 of the timing tests for the 48k Spectrum, with a little background [IMG]http://www.zxspectrum4.net/images/timing_test_v1.jpg[/IMG] [URL="…

    ... can I find that pesky z80test? I've googled it without ...
    Woody Woody April 2010 Development
  • Sinclairean A3[B]Sinclairean[/B], a new ZX Spectrum emulator written in machine code for x86-compatible, OpenGL-capable computers. Features: [LIST] [*]Fast machin…

    ... :
    [LIST]
    [*]DJNZ
    [*]LDIR
    [*]LDDR
    [*]CPIR
    Madonna Mk 2 Madonna Mk 2 April 2010 Emulators
  • 'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…

    ... /> ld (hl),a ;attribute
    ldir[/code]
    Shiru Shiru June 2010 Sinclair Basic
  • 'Hello World' in ASM ?Can someone show how to make the classic 'Hello World' print with ASM code ? I cant figure at this moment how to insert and handle strings with the s…

    ... 've provided is very simple. LDIR is CPU operation which copies ...
    Shiru Shiru June 2010 Sinclair Basic
  • Obfuscated code ideaThe instructions [b]SUB A[/b] and [b]XOR A[/b] both have the effect of setting the accumulator to zero. The only difference between them is that [b]…

    ... appear in front of [b]LDIR[/b] or something? :-P[/QUOTE ...
    Jonathan Harston Jonathan Harston June 2010 Development
  • Arkos TrackerHi all, I'm proud to present you my Windows-based Tracker : Arkos Tracker, for you to compose for Spectrum, CPC and MSX. It requires .NET 3.5 at lea…

    ... /> ld bc,&0100
    ldir


    ; Move the ... /> ld bc,end_music - begin_music
    ldir

    ; Initialize CPU Stack ...
    SyX SyX June 2010 Development
  • Speccy games programmingI've got a question. Where games written in pure machine code or was it a level higher with Assembly language being the choice? I always thought it…

    ...
    ld bc, 6912
    ldir
    ret[/CODE]
    is ...
    ajmoss ajmoss June 2010 Games
  • Sprite MaskingI was looking at the sprites in some games, and noticed they have sprite followed by mask. Usually a row at a time (so the mask is sort of interleave…

    ... block load instructions (ldi, ldd, ldir or lddr) unless you have ...
    ajmoss ajmoss June 2010 Development
  • Sprite MaskingI was looking at the sprites in some games, and noticed they have sprite followed by mask. Usually a row at a time (so the mask is sort of interleave…

    ... just using LDDR instead of LDIR, then the natural progression involves ...
    ajmoss ajmoss June 2010 Development
  • "Programming the Spectrum in Assembly" series in Micro MartI see that Shaun Bebbington is starting a series of articles in Micro Mart magazine on how to program in assembly for those who might know a little b…

    ...
    LD BC, 0x1800
    LDIR
    [/code]
    Philip Kendall Philip Kendall June 2010 Sinclair Miscellaneous
  • Machine Code Microdrive File LoaderI've been experimenting with transferring games to run from microdrive. Typically I like to see a loading screen while things are happening, and I li…

    ... many jumps to copy
    ldir
    ;
    xor a ; set ...
    ld bc,$0009
    ldir
    ;
    ld l,(ix ...
    jp jp June 2010 Development
  • LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…

    ... :
    [list]
    [*] whether the LDIR opcode is running in contended ... to look at NOT using LDIR and using chains of LDI ...
    BloodBaz BloodBaz June 2010 Development
  • LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…

    ... loops, is:
    [code]Contended: LDIR LDI

    Only (DE ...
    ajmoss ajmoss June 2010 Development
  • LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…

    ... I suspect you're discovering, LDIR is about the slowest way ...
    Philip Kendall Philip Kendall June 2010 Development
  • Problem with PRINT #stream on +128kWorking on a +128k, I want to choose whether all report output goes to screen or printer, so I use PRINT #stream where stream = 2 or 3 for screen or …

    ... could do the equivalent of LDIR/LDDR from BASIC, plus I ...
    Battle Bunny Battle Bunny July 2010 Sinclair Basic
  • Common pitfalls and solutionsLet's discuss some of the common problems in Speccy programming, and the methods we use to avoid them. For an example, here is a piece of code that …

    ...
    LD BC,4
    LDIR
    RES 4,(IY+01 ...
    BiNMaN BiNMaN August 2010 Development
  • Common pitfalls and solutionsLet's discuss some of the common problems in Speccy programming, and the methods we use to avoid them. For an example, here is a piece of code that …

    ...
    LD BC,4
    LDIR
    RES 4,(IY+01 ...
    zxbruno zxbruno August 2010 Development
  • Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…

    ... the first byte, and use LDIR to copy that byte and ...
    joefish joefish August 2010 Sinclair Basic
  • Z80 Machine Code Question...Hi Folks, I know not strictly a BASIC question but I have started to learn Z80 machine code - 25 years too late! :smile: I have been reading a book…

    ... to 'ab'use the LDIR instruction. Have a look ... br /> LD BC,1
    LDIR
    [/CODE]
    You ... location (HL), then you use LDIR to copy (HL) to ( ...
    LD BC,6143
    LDIR
    [/CODE]
    6143 = ... (outside 4000-7FFFh area), LDIR copies data at ~170 KB ...
    RetroTechie RetroTechie August 2010 Sinclair Basic
  • 48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…

    ... very simple test, which involves LDIR'ing a block of 6912 ...
    mcleod_ideafix mcleod_ideafix August 2010 Hardware
  • 48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…

    ... very simple test, which involves LDIR'ing a block of 6912 ...
    ingo ingo August 2010 Hardware
  • JSpeccy new releaseA new version of my Java based ZX Spectrum emulator has been released. The summary of new features is: - 128k/+2 ZX Spectrum emulation - AY-3-8912 …

    [QUOTE=Fikee;473075]where i can find the tests ?[/QUOTE]

    Woody's [url=http://homepage.ntlworld.com/mark.woodmass/z80tests.tap]z80test[/url]

    Timing tests:
    [url]http://www.zxspectrum4.net/downloads/timing_tests/[/url]
    Pegaz Pegaz September 2010 Emulators
  • updated Fatware - keyboard patchHi! I work with Fatware code and already prepare keyboard patch for original version 0.12. Now it's possible to operate disk browser with keys: 1) c…

    ... also screen version of DEVASTACE (LDIR from divide ram page 1 ...
    velesoft velesoft September 2010 Development
  • compressing basicI thought I'd ask here instead of the basic forum.. in the sense of giving me 1 command line, and NOT the whole listing joined up etc. and it uncom…

    ... of machine code with an LDIR to copy the chunk, as ...
    Battle Bunny Battle Bunny September 2010 Development
  • compressing basicI thought I'd ask here instead of the basic forum.. in the sense of giving me 1 command line, and NOT the whole listing joined up etc. and it uncom…

    ... program
    25626 237 176 LDIR ;copy program# from stack
    25656 237 176 LDIR ;copy program# to stack
    Battle Bunny Battle Bunny September 2010 Development
  • logical operators and the calculator stackI was wondering if there was a utility which would provide the list of commands needed for the ROM calculator to evaluate a logical expression. For e…

    ... ;And copy my expression...
    ldir ;...into the workspace
    res ...
    mcleod_ideafix mcleod_ideafix September 2010 Development
  • DMA interface for ZX Spectrum[url]http://velesoft.speccy.cz/data-gear.htm[/url] This is internal DATA-GEAR interface for any 8-bit computer with Z80CPU. Use Direct Memory Access…

    ... . DMA work only as fat LDIR and need long time for ...
    velesoft velesoft September 2010 Hardware
<1…11121314151617…34>

Latest Posts

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    harriusherbartio on 11:21AM
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    harriusherbartio on 11:01AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21

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