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<1…14151617181920…34>
  • testing if speccy is fully functionalHi, There is so much mention of T states but still confused. Does this mean if an instructin is out by a T-state or more then the speccy is faulty?…

    ... more, nothing less. The Z80 will always execute a given ... of clock ticks, the Z80 simply wouldn't function ... length of the initial reset pulse, this depends on ... scheme of things, the reset pulse merely needs to ... which reset is no longer asserted on the Z80 may ...
    Winston Winston June 2010 Sinclair Miscellaneous
  • KING OF PONG: Pong revisitedHello everybody. I'm proud to announce you that my last personal project for the ZX Spectrum, "KING OF PONG" is available to download here at WOS si…

    [QUOTE=Bandit;449480]Hope I'm not being too cheeky but here's a *very primitive* computer opponent that makes a little bit of a game of it.[/QUOTE]

    My! Not in my wildest dreams I would thought someone made a patch to play against the CPU! **G ...
    Ricardo Cancho Ricardo Cancho June 2010 Development
  • DivIDE with gray +2 LOAD not workingI have 128+2 gray. It has faulty upper memory. PEEK 23733 shows 191. I wanted to use divIDE to load some test programs, but it always hangs when exec…

    ... RAM :-?
    I can only Reset after Load. Edge connector should ... .

    It is NEC Z80 CPU, original Zilog did not ...
    kpuchatek kpuchatek June 2010 Hardware
  • DivIDE Plus FeedbackFinally had a chance to try out the DivIDE Plus since I got a CF card working (thanks to Rich) I put on a load of TAP and Z80 files I had onto it (I…

    ... you to select and run Z80/SNA snapshots and TAP/TZX ... change TAP then I must reset ZX and select new TAP ... select new TAP must be reset ZX for possibility use command ...
    glancaster glancaster July 2010 Hardware
  • 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…

    ... you hold the SHIFT while reset it will go to 128k ... Menu
    - When loading Z80 snapshots it will WAIT for ...
    Tom-Cat Tom-Cat September 2010 Development
  • 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…

    ... you hold the SHIFT while reset it will go to 128k ... Menu
    - When loading Z80 snapshots it will WAIT for ... />
    After load any snapshot(Z80 or SNA) you must :
    Z80 code, edit memory, find text ...
    velesoft velesoft September 2010 Development
  • Help and Advice with DivIDE PlusHi Guys, Really struggling to get any reliable actiivty with my DivIDE Plus and am looking for some pointers. I am trying to get it to work with on…

    ... />
    [QUOTE=fog;473740]the reset switch method I prefer to ... fix was to replace the Z80 CPU (most likely due ... I believe you have faulty Z80 M1 line, probably on both ... was able to replace my Z80 CPU and now it ... stock of 4 spare modern Z80 chips which I could ...
    BloodBaz BloodBaz September 2010 Hardware
  • Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…

    ... to be runnable code, the Z80 has a well-defined behaviour ... meaningless operations indefinitely until you reset. Luckily, there is no [url ... Fire[/url] instruction on the Z80 :-)
    gasman gasman September 2010 Sinclair Basic
  • Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…

    ... to be runnable code, the Z80 has a well-defined behaviour ... meaningless operations indefinitely until you reset. Luckily, there is no [url ... Fire[/url] instruction on the Z80 :-)[/QUOTE]

    I have ...
    Scottie_uk Scottie_uk September 2010 Sinclair Basic
  • Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…

    ... ]

    From ZILOG's Z80 Family CPU User Manual:
    z80/um0080.pdf[/url])

    response. After the application of RESET, the CPU automatically enters
    The_Bert The_Bert September 2010 Sinclair Basic
  • Broken +3I have noticed that some members on this forum prefer to repair Spectrums instead of just buying another one from ebay. I would like mine fixed at so…

    ... />
    I did remove the Z80 from the broken +3 as ... the state of my original Z80 CPU? You know if this ... is a hole around the reset button, the tape socket broke ...
    ASM ASM October 2010 Hardware
  • The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …

    ... I can get the P2 Z80 v2.71 editor/assember to ... can modify the existing PDS Z80 source code to work with ... program instead of having to reset the Spectrum each time. The ...
    ASM ASM October 2010 Sinclair Miscellaneous
  • The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …

    ... for 68K developement although the Z80 version is slightly different. ... is no debugger for the Z80 version.


    ... existing program - no need to reset target.
    Download code section ... assembler directives used by the Z80 version of P2 then ...
    ASM ASM October 2010 Sinclair Miscellaneous
  • The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …

    ... reasons it contained a Zilog Z80.

    I ... the poor old Zilog Z80 found in our beloved ... the opposite endian to the Z80, that is; the way ... br />
    [code]
    Z80: ld hl,16384 ; Load with ... /> dc.l SEGAINIT ; PC AFTER RESET

    org 96< ...
    ASM ASM October 2010 Sinclair Miscellaneous
  • Alien8 will not run on Divide?I can't seem to get Alien8 running on my 128+ with Divide. I have the original tape and have loaded into an emulator to create a snapshot, (.z80) an…

    ... emulator to create a snapshot, (.z80) and when trying to load ... then the Speccy performs a reset, Grrrr.
    The snapshot loads ... by saving it as a .z80 file, and then going into ...
    Alien 8 Alien 8 October 2010 Hardware
  • Alien8 will not run on Divide?I can't seem to get Alien8 running on my 128+ with Divide. I have the original tape and have loaded into an emulator to create a snapshot, (.z80) an…

    ... emulator to create a snapshot, (.z80) and when trying to load ... then the Speccy performs a reset, Grrrr.
    The snapshot loads ...
    LCD LCD October 2010 Hardware
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... last 256 BYTES of the Z80 memory map. It is impossible ... ][/URL]

    This will reset the Spectrum:

    zx232 ... /> This will upload the entire Z80 memory map:

    zx232 ... />

    Here is the Z80 to receive data from the ...
    ASM ASM October 2010 Hardware
  • ZX Spectrum+ Problem - Need help -Greetings guys, I bought one ZX Spectrum+. This is what displays on the TV: [IMG]http://d.imagehost.org/0371/17102010_001.jpg[/IMG] When I switch …

    ... replies.

    @ willcz > reset signal pin 26 of CPU ... does not react to RESET. Any hint?
    I have ... . Are those pins on the Z80 chip?

    @ LCD > ... ; I will hunt a Zilog Z80 chip on evilbay. Does anyone ...
    covenant covenant October 2010 Hardware
  • ZX Spectrum+ Problem - Need help -Greetings guys, I bought one ZX Spectrum+. This is what displays on the TV: [IMG]http://d.imagehost.org/0371/17102010_001.jpg[/IMG] When I switch …

    ... , but if voltage reset do not react on reset button, than you ... why. (what is voltage on reset pin of processor?)
    all ... other pins are on Z80, just check if there is ... , it is ok

    Z80 is normal part, you can ...
    willcz willcz October 2010 Hardware
  • ZX Spectrum+ Problem - Need help -Greetings guys, I bought one ZX Spectrum+. This is what displays on the TV: [IMG]http://d.imagehost.org/0371/17102010_001.jpg[/IMG] When I switch …

    ... this symptom. Yes, a duff z80 would also cause this, but ... colour fluctuates? It should be reset by the ROM before any ... accessed, which might indicate the Z80. However the 4116 may be ...
    csmith csmith October 2010 Hardware
  • Optimization for this codeHello, I have done and submitted a small program for the CSS Crap Game Compo which involves a machine code routine. The z80 with BASIC and MC is av…

    ... one [URL="http://www.z80.info/z80href.txt"]here[/URL ... LD BC,8*256
    RESET:
    LD (HL),C< ... /> INC H
    DJNZ RESET

    LD A ... ,7 if there was no reset.

    RESTART:
    reset is also something you might ...
    Patrik Rak Patrik Rak October 2010 Development
  • Assembly Programming for IDIOTSOk are there any websites guides for what opcodes do in a z80 or books... but for really really thick people like me :-) Something along the lines …

    ... is low enough for the Z80 to attend them without missing ... read the status byte and reset the interrupt condition, then read ... is valid for a general Z80 computer, capable of having multiples ...
    mcleod_ideafix mcleod_ideafix October 2010 Sinclair Miscellaneous
  • Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…

    ... great deal from the Zilog Z80, Motorola MC68000, Mips R4000 ... STACK equ 0010000000000000b ; Reset SSP.
    RESET equ 0100000000000000b ; Reset CPU.
    SLEEP ... br /> STACK_MASK equ 1101111111111111b ; Reset SSP.
    RESET_MASK equ ...
    ASM ASM October 2010 Development
  • Games in machine codeHi everyone, How do go about doing multiple shots like a machine gun, do you have to store every x and y position of each bullet? When you kill som…

    ... I've been coding some Z80 +3DOS routines recently to ... write any of it in Z80:

    Application ... br /> mov ecx,0x01000000 ; Reset count
    dec edx< ... to do that on the Z80 as 'cache' and 'pipeline ... depacker for the GameBoy Z80 variant that I ported ...
    ASM ASM October 2010 Development
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    Here is the Z80 sourcecode for the 'stack free' ... ),a

    ; ------------

    reset xor a,a
    out ... ,space

    ok jr reset

    ; ------------

    quit ...
    ASM ASM November 2010 Hardware
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... wait about two seconds and reset everything. I had to ... happy the supply the Z80 code and x86 port ... I already posted the finished Z80 for the Spectrum end, ... br /> Return the full Z80 register map (can be used ... version of .SNA and .Z80 snapshots.
    Upload the ...
    ASM ASM November 2010 Hardware
  • Demfir d0.7b Iso not recognizedIn the manual it says: Works with iso9660 (CD-ROM image) directly from CD-ROM device or stored on ZIP drive, HDD or CompactFlash. I copied a ISO im…

    ... ) and select any TAP,SNA,Z80 file (set cursor to filename ... and press ENTER). SNA and Z80 files start automatically, but TAP ... first TAP file use software reset by SS+R in main ... menu. This reset initialise DEMFIR variables and clear ...
    velesoft velesoft November 2010 Hardware
  • Programming flash eprom on DIVIDE+Can you test it on DIVIDE PLUS ? [url]http://velesoft.speccy.cz/other/flasher-divide-plus.zip[/url] (This flash utility is WINSTON's flasher for dia…

    ... and I could then only reset my Speccy. I expected to ... PLUS interface
    - Load this Z80 or SNA snapshot in FATWARE ...
    velesoft velesoft November 2010 Hardware
  • Programming flash eprom on DIVIDE+Can you test it on DIVIDE PLUS ? [url]http://velesoft.speccy.cz/other/flasher-divide-plus.zip[/url] (This flash utility is WINSTON's flasher for dia…

    ... own snapshot as a .z80 file using the Task ... , eg %snapload "Alien8.Z80", it works perfectly.[/QUOTE]< ... for ZX128/+2) support reset to true 48 mode ... R + NMI - software reset[B]
    RESET+SHIFT - start to USR ... with 128kB memory)
    RESET+EXTEND MODE - start to ...
    velesoft velesoft November 2010 Hardware
<1…14151617181920…34>

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