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  • spectrum disks for saleI have 296 titles on around 200 disks for sale. Offering them on here first before ebay gets them. Contact me at [email="cluncastle@hotmail.com"]clun…

    ... as MIA. I have a Z80 snapsnot of this game and ... that is of any real value is the DB2 disk copier ...
    The Master The Master December 2004 Sales
  • Has anybody ever done a 3d version of Fairlight map?Has anybody ever done a 3d version of Fairlight map? I am thinking about Speccy games that were isometric, but had a rich spatial structure. Great Es…

    ... />
    I suppose the initial novelty value would be high though. Incidentally ...
    Arjun Arjun January 2005 Sinclair Miscellaneous
  • .POK filesSorry if this has been asked a million times before, but where do i get .pok files from? As my emulators seem to die when i try typing pokes in, and …

    ... the address and value to the address and value for the game ... for Technician Ted in TechnicianTed.z80.zip on this site. For ...
    Sadako Sadako February 2005 Emulators
  • About z88dk and autoexecsThis weekend I was playing a little with z88dk C cross Compiler. Amazing tool! I have three questions: 1- Does anybody know how to change the initia…

    ... know how to change the initial address of the generated code ... can I save an autoexecutable .z80 or .sna file?
    [/quote ...
    Alcoholics Anonymous Alcoholics Anonymous February 2005 Development
  • Write to ROM=crash?I've read in quite a few places that writing to the ROM causes a crash but on the assembly listing the comments for poke say: "Happily no check is ma…

    [quote]Does this mean that pushing a value when SP
    cyborg cyborg February 2005 Development
  • InterruptsCan someone help with providing some info or a link about IM 2. I know I need to create a vector table and want to store this as high in memory as po…

    ... /> When in IM2 mode the value in the I register is ... used, along with a 'random' value, to form an address, with ... is then read and the Z80 jumps to that location. Why ... you don't have even value low bytes then you'll ...
    cyborg cyborg February 2005 Development
  • ADCI'm a little confused about how the Z80 manages the ADC instruction. I'm assuming two ADD instructions are performed (am I wrong?!) I can think of 3 …

    ... -bit adder (as in a z80 8-bit add instruction), you ... you did ask how the z80 does it :)

    [quote ... Result what part does the initial Carry play? Is it added ...
    Alcoholics Anonymous Alcoholics Anonymous February 2005 Development
  • Hypersports problem - freezes before 1st event?I am using Fuse on Mac OSX, have tried a few of the available Hypersports in the archive now, but each one appears fine until I start the first event…

    ... "tstates < 48" test in z80/z80.c:z80_interrupt() to (say) "tstates ... 't yet have an accurate value for how long the ULA ...
    Philip Kendall Philip Kendall February 2005 Games
  • Interrupt timingsHow long does the ULA hold /INT low for on interrupt on each of the Spectrum models?

    ... on the Z80 pin is very slow. The +3 value comes from ...
    Luca Luca March 2005 Development
  • New Compo IdeaI've had this idea and would like to know what do you think about it. I think that most of us here know how to code in BASIC. The problem with Specc…

    ... . You are lazy? send a Z80 or a SNA file ;)

    * Fun factor (gameplay, replay value, controls, etc...): 70% of total ...
    na_th_an na_th_an March 2005 Development
  • Z88DK + SPLIB2 question.I downloaded the compiler, installed it following the instructions (found at the SPLIB2 website), updated it using the fixed files (stdlib.h and the …

    ... 0x0a};

    /* Initial State of Print String Struct ... void *key;
    void *value;
    struct sp_HashCell *next;
    value);



    value);
    extern void __LIB__ sp_HashDelete ...
    na_th_an na_th_an April 2005 Development
  • Awfully quietI suppose everyone's living it up at the CGE

    ... ? I thought that was the initial reasons for CGE's existance ... />
    But, hey, very good value for ?10 on the door ...
    NickH NickH August 2005 Sinclair Miscellaneous
  • z88dk+splib2 sprites question.I'm creating a game and I have several "states" for my main sprite, such as jump, facing left, facing right, etcetera. All those states require a dif…

    ... Pasi Ojala
    ;### Ported to Z80 by Jussi Pitk?nen
    Z80 port.
    ;###

    ;## Decompress ... los registros dobles del z80. En el Z80 ademas de AF, BC ...
    na_th_an na_th_an October 2005 Development
  • After roughly 22 years can you help?Hi, A long one this but here goes. Roughly 22 years ago (i was 14 if i remember right) i got a 48K speccy for christmas of my dad it was awesome an…

    ... HL', next 2 number is value which goes to HL. LD ... for many CPU, not only Z80, although mnemonics, byte order etc ...
    piters piters November 2005 Sinclair Miscellaneous
  • After roughly 22 years can you help?Hi, A long one this but here goes. Roughly 22 years ago (i was 14 if i remember right) i got a 48K speccy for christmas of my dad it was awesome an…

    ... HL', next 2 number is value which goes to HL. LD ... for many CPU, not only Z80, although mnemonics, byte order etc ...
    Skarpo Skarpo November 2005 Sinclair Miscellaneous
  • Pocket Clive - 2 QuestionsHello, I've just started using Pocket Clive on my iPaq pocket PC, excellent emulator BTW. 1. I have just wrote a small BASIC program to randomly pi…

    ... which implies zero), then the value from the two least siginificant ... However, on loading a .z80 snapshot into an emulator, the ... average) of loading the .z80 snapshot, then the RANDOMIZE statement ... below:-

    lottery1.z80 (The original code that shows ...
    Digital Prawn Digital Prawn December 2005 Emulators
  • Emulator File types...SNA/TAP/TZX/Z80/ZXS All I knew about the Spectrum was how to play games on it, but since being introduced to pc emulations back in '97 I've always w…

    ... only difference is that the Z80's registers are PUSHed onto ... using system variable FRAMES, whose value depends on how long the ... a snapshot format, the seed value never changes so the same ...
    Alcoholics Anonymous Alcoholics Anonymous January 2006 Emulators
  • Method to read byte as binary string rather than dec?Hi all Am fiddling around with the screen buffer and have written a routine to scan the screenbuffer into upper ram and then write it back in upside…

    ... a lot of people learned Z80 from that book. Nice stuff ... subroutine that takes a byte value and:
    [code]
    1 ...
    icabod icabod February 2006 Sinclair Basic
  • Homing missile routine - help neededI am attempting to write a routine which will allow a missile to home in on a player. Basically the sort of thing you see in most shoot-em-up games. …

    ... , set its initial iX and iY to a fairly high value (say ...
    TrueVideo TrueVideo March 2006 Development
  • Legal Sinclair clones?Are any of the cloned Sinclair computers legal, other than the original Timex machines? Are the QL Clones legal? Could a legal clone be produced with…

    ... round to putting together an initial release of it: [url]http ... be impossible to find a Z80 programmer up to the task ...
    gasman gasman April 2006 Sinclair Miscellaneous
  • MEMPTR finally crackedThis post is mainly for emulator developers. As you may be well know there is a misterious internal register in Z80 CPU (MEMPTR) which value is set …

    ... misterious internal register in Z80 CPU (MEMPTR) which value is set or ... changed by some Z80 instructions and ... was not exactly known which Z80 instructions initialize the MEMPTR and ...
    The President The President April 2006 Emulators
  • Basic or Machine code?Hopefully the correct area of the site to post this question. Anyways, I have got hold of several books on programming my spectrum, and I was wonderi…

    ... to {""} -- restore delimiters to default value
    return l
    end ... to {""} -- restore delimiters to default value
    return t
    end ... choose file with prompt "Choose z80 source file"
    my feedPasmo ...
    Paul van der Laan Paul van der Laan April 2006 Development
  • finding largest value (z80 assembly)suppose we have to write z80 program which requires to find the biggest value in a block of memory starts from the address 101h until address stored …

    ... wanted to find a certain value in that particular memory area ... it's related to the Z80 itself rather than the Speccy ...
    GOC GOC April 2006 Development
  • finding largest value (z80 assembly)suppose we have to write z80 program which requires to find the biggest value in a block of memory starts from the address 101h until address stored …

    ... ,101h ; set the first value to hl
    ld ... when the current maximum value in A is less than ... to get the next maximum value. But the "jr c, ... will which means the first value will be skipped...
    ... you load up the initial values of HL and ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... move the top of the z80's stack to 54016. You ... . The Basic system puts the z80 in im1 mode, which means ... starting at address 0xc000. The value returned by "ba_AddMem()" is the ...
    Alcoholics Anonymous Alcoholics Anonymous April 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... /> This is the time in z80 cycles that SP1 takes to ... buffer. The pixel buffer's initial contents are not entirely predictable ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • Sprite adviceHello. So, I'm slowly getting to grips with Z80 assembly - currently equal parts frustration and enjoyment. Now looking for some advice to help shift…

    ... 'm not really versed on z80 code, but there is a ... -of-the-blue ideas for z80 experts here ;)

    Lets ... add into a -1 value using subx (z80 analog would be subc ... so that it generates the value we want to add.
    windenNTW windenNTW May 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... finds the (key,value) pair and returns the "value". You can ... the corresponding (key,value) pair is found and "value" is returned by ... It works exactly like the z80 stack, but independently of it ... pointer pointing at "item2". The value returned is this "item2" ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • ANN: SP1 for Z88DK (aka splib3, Sprite Pack v3.0)Well it's finally arrived, after a month of "a few days from now" release deadlines. SP1 is the lastest version of splib, a flicker-free software sp…

    ... move sprites to their initial position on screen after ... reset to the rate value, and the countdown begins ... array containing an attribute value and a tile code. ... counts from the rate value down to zero, and ... will return a non-zero value if it is. in_JoyKeyboard ...
    Alcoholics Anonymous Alcoholics Anonymous May 2006 Development
  • MAME on the Spectrum?Yes, I know it's currently AY's job to make ludicrous posts (a position he's filling in very well, until TKRAP returns), but just out of interest, if…

    ... though it's fairly 8080/Z80 compatible there are opcode differences ... RST will read the original value and do the right code ...
    Dr BEEP Dr BEEP May 2006 Emulators
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