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Search Again :: Adv Search 1000 results in 0.014s
<1…17181920212223…34>
  • External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…

    ... am, I use Tesco's Value glossy paper rather than Press ... the flash programmer for my Z80 board - essentially, not a good ...
    Winston Winston March 2007 Hardware
  • External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…

    ... am, I use Tesco's Value glossy paper rather than Press ... the flash programmer for my Z80 board - essentially, not a good ...
    DEATH DEATH March 2007 Hardware
  • External Speccy CommunicationHow does a speccy communicate with the outside world ?? Do you have to have the interface 1 for serial communications ( rs232 ) or are there other p…

    ... would interface nicely to my Z80 board or a Spectrum. Trouble ... />
    You're right about value photopaper being cheap, shame I ...
    DEATH DEATH March 2007 Hardware
  • Adding AY music to your plogramI'd like to add some nice tune to my program written in machine code. I am not new to assembler programming but with music programming I have no expe…

    ... of producing sound while the Z80 does other things, but that ... 65533, then send the new value to port 49149. For some ...
    jonathan jonathan March 2007 Development
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... the initialisation, it writes a value to every location, which is ... screen are. I get that value (02 I think) in every ... , it's not a bad Z80 and it's not bad ...
    DEATH DEATH March 2007 Hardware
  • Anybody fancy coding this?blah de blah de blah Please ignore, poting error.

    ... />
    Basically, I need a Z80 routine that checks as much ... =peek a : rem save original value
    for b = 0 to ... /> poke a,v :restore original value

    [/code ...
    DEATH DEATH March 2007 Development
  • TV Modulator. Can it be repaired?Is it possible, to repair tha TV modulator (after removing it) if it gives wavy picture? I replaced both transistors (tr1/2) and both electrolytic ca…

    ... the initialisation, it writes a value to every location, which ... screen are. I get that value (02 I think) in ... it's not a bad Z80 and it's not bad ... $01).
    Also, the Z80 has direct, fast access to ... My company used to manufacture Z80 CP/M boards (they fitted ...
    Marcelo Marcelo March 2007 Hardware
  • My emulator doesn't take "commands"Hi This is probably a question that is very hard to answer, but perhaps some of you have/had the same problem. In my own emulator (that I have built)…

    ... ?

    If your emulated Z80 is locked in a loop ... code can act as a "z80 debugger", even if it is ... is waiting on some counter value and you might be able ...
    Laser Laser March 2007 Emulators
  • 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…

    ... as long as a new value for the stack pointer is ... ), but printing a 16-bit value with MSB != 0 indicates an ... />
    The wiki covers the z80 libraries as they are in ...
    Alcoholics Anonymous Alcoholics Anonymous March 2007 Development
  • Help required using DivIDE / SE BASICHi, Like others of you, I have pre-ordered a [b]DivIDE Plus[/b] from rwap services but I am trying to get to grips with some of the firmware that ha…

    ... />
    In response to the initial question, ResiDOS doesn't use ... , eg:

    %snapload "snapshot.z80"
    %rom "GWBasic"
    %zx81 ...
    glancaster glancaster April 2007 Hardware
  • NMI : especially PitersHello Piters, here the link to your NMI-button. [url]http://members.tripod.com/~piters/nmibutto.htm[/url] I don't understand your reason to place …

    ... the CPU is doing. The Z80 manual unfortunately doesn't say ... the loss of the proper value of IFF1 when RETN executes ...
    Winston Winston April 2007 Hardware
  • NMI : especially PitersHello Piters, here the link to your NMI-button. [url]http://members.tripod.com/~piters/nmibutto.htm[/url] I don't understand your reason to place …

    ... happens to hold the previous value of IFF1, rather than having ... shouldn't kill the IFF2 value. I think most emulators have ... doesn't vary between different Z80 versions!

    Si
    obo obo April 2007 Hardware
  • My little first set of routines.Hi all, I just coded a little set of routines just to draw a screen on video mem and a fade out. I could have just copied the screen rendering rout…

    ... C already is without INK-value[/QUOTE]

    You're ... supposed to lose the ink value (it's supposed to be ... have you spent coding in z80 asm? you?re a library ...
    Alcoholics Anonymous Alcoholics Anonymous April 2007 Development
  • Reading the border colorI am building a snap-button to my ZX-PC Interface. Is there a way to read the bordercolor which is set by an OUT-command. (and please don't tell me …

    ... the fanout capability of the Z80's address and data bus ... use to read the stored value back. '273 has an active ... for latching the port 254 value coming from the Spectrum, and ...
    Winston Winston April 2007 Hardware
  • PZX file format draft[QUOTE=Andrew Barker;186084]To this date, there is no rival format for TZX, despite people saying they can do better. Well the challenge is on, prov…

    ... would not necessarily imply its value is indeed greater than 65535 ... field which would specify the initial pulse level for that block ...
    Patrik Rak Patrik Rak May 2007 Emulators
  • PZX file format draft[QUOTE=Andrew Barker;186084]To this date, there is no rival format for TZX, despite people saying they can do better. Well the challenge is on, prov…

    ... suggest to add to the initial text:

    Any inconsistent ... frequency is a hardware specific value, and it is valid only ... />
    - either use a generic value, e.g. milli seconds
    Patrik Rak Patrik Rak May 2007 Emulators
  • WoS hits 500 permission statementsIt's been a while since I asked, but since we reached our 500th permission statement from individuals today, I thought I'd remind you all again: If …

    ... write? Nothing of any real value, to be honest. The biggest ... with my Atari ST converting .Z80 files to .SNA files, using ...
    ewgf ewgf May 2007 Sinclair Miscellaneous
  • How does interrupts work?I am a little confused regarding the interrupts on the Spectrum. If I have some hundred bytes of machine code started with, say, [B]RANDOMIZE USR 300…

    ... of 5 (keyboard row, return value bit mask) values and execute ... routines return the same byte value F000LRUD so that selecting a ... am just starting to learn Z80 assembler now, but it is ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Development
  • Multi-loader gamesHi, I have Run the Gauntlet as a Z80 file. After the initial screens it tells me to load the next stage/insert the next tape. How do I do this? I on…

    ... the Gauntlet as a Z80 file. After the initial screens it tells ... ...
    [/QUOTE]

    The z80 doesn't contain the next ... />
    Are you running the z80 for some reason? The next ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Games
  • Making your own joystick interfaceJust spied the diagram for the kempston joystick interface in the docs section. For someone who has only made up cables, what is involved in constru…

    ... in the post (yesterday!) - two Z80 based computer boards I designed ... design on cheap Tesco's Value glossy inkjet photo paper, then ...
    Winston Winston June 2007 Hardware
  • PiracyAlthough I'm sure no-one here ever copied tapes :rolleyes: , does anyone actually know of someone being prosecuted "back in the day" (to quote a Kizz…

    ... creative work some free market value. Scarce items tend to be ... some money back from their initial very generous payments? Perhaps they ... getting extended, it fails its initial purpose - to ENCOURAGE the creation ...
    Winston Winston June 2007 Games
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... , though I do keep the z80's -- and z88dk's -- ... , is written for a z80 machine with a crazy display ... provides char (8-bit signed value -128 to 127), unsigned ... ), int (16 bit signed value -32768 to 32767), unsigned ... memory address, on the z80, is 2-byte in size ...
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... to hold the variable's value. Under normal circumstances you have ... being communicated directly to the z80 assembler. This is one of ... declaration should include the return value and list of parameter types ... C functions exist on the z80's stack and will only ...
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... as the result and return value for the function.
    < ... I begin with a specific value in "bmp" with binary representation ... , it will now contain a value "6543210-". "bmp" is a ... "bmp" and the hexadecimal value "0x80". The hexadecimal value "0x80" is "1000 ...
    Alcoholics Anonymous Alcoholics Anonymous June 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... formatting
    // row = initial row coordinate
    // col = initial column coordinate

    [code]
    // compute initial print position of line
    value. An alternative would have been ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    [code]
    1 LET n=191: BORDER 0: PAPER 0: INK 7: CLS : DIM i$(3,9):
    FOR i=1 TO 3: LET i$(i)=" # # # # ": NEXT i: LET p=16: LET b=0: LET a=p:
    LET s=0: FOR y=0 TO 14: LET e=y/2=INT (y/2): FOR x=(1-e)*24 TO e*24 STEP e*2-1:
    PRINT AT 21 ...
    Digital Prawn Digital Prawn July 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... for "uchar l". The z80's stack pointer will, therefore ... byte variable called "scroll_buffer" whose value will be stored at 49152 ... generate code. Functions written in z80 can use all three, with ... /> [/code]

    with the z80's stack pointer SP pointing ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... walks through each upper range value stored in the selected amp ... than the array value. When this occurs, the value to be returned ... I haven't seen any z80 random number generator that is ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    Right, I've just implemented all of your optimisations (a)-(h).

    This has resulted in saving 45 positions, making a total of 47 positions remaining! So almost certainly room for some extra feature I hope. I will think about how I can use this ...
    Digital Prawn Digital Prawn August 2007 Development
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Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
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    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
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    rich_chandler on April 21
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    mel the bell on April 21
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    harriusherbartio on April 21
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