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Search Again :: Adv Search 1000 results in 0.013s
<1234567…34>
  • Machine code[CODE] OPCODE HEX ADD LD A,05 3E05 F000 LD B,00 0600 F002 INC B 04 LOOP F004 CP A,B B8 F005 JP NZ,LOOP C2F003 F006 LD B,00 0600 F009 LD …

    ... times and then set a value into ram so i can see ...
    Robin Robin September 2010 Development
  • DIVIDE PLUS - new memory mode DIVIDE128Divide PLUS contain 512kB sram + 512kB flash eprom. Memory paging in this device is enable on two different ports : 1) port #E3 is compatible with o…

    ... for enable this "divide 128kB ram mode"

    - Value with ram page number must be rewrited ... 0 = value 0, page 1 = value 2, page 10 = value 20, ... last page 31 = value 62 ... placed on different ram space = ram page 3 are ...
    velesoft velesoft June 2013 Hardware
  • ZX Life Shield Pro V2.2 - WIPHello!!! It is Marco!!! I have been working on V2.2 of my life finder utility. The previous versions only support .SNA snapshots. This version wi…

    ... into a RAM address shows the text:
    "Value at RAM address ADDRESS ...
    marcoagpinto marcoagpinto June 2008 Announcements
  • The Ultimate Spectrum, made from old spectrumsGiven that all types of the Spectrum are less than ideal in one respect or another, I wondered what the ulimate refinement would be, but just using o…

    ... from Z80CPU to data bus value xx, but kempston interface in ... send to data bus different value. Unstable incorrect value from data bus is ...
    velesoft velesoft December 2010 Hardware
  • 128 Heatsink Machine UpgradesThe title says it all - anything I can do to upgrade this machine? Thanks. I already have a PlusD and a DivIDE +..

    ... is active, then ZX ram is often very unstable... For example BLACK ... ). More peripherals on ZX bus = unstable ram. Some russian software with raining ...
    velesoft velesoft January 2012 Hardware
  • EMUZLOADER errorI've been sent some program files in EMUZLOADER format. One won't load as the unpacking doesn't stop when it reaches the top of the stack at $408F bu…

    ... searching for the $5C3A IY value in RAM (as it POPs all ...
    Battle Bunny Battle Bunny May 2012 Emulators
  • New Game: Ninjajar!Yes, it's here! We had some late hour problems with +2A models and had to switch to a machine code loader (as the game takes up the whole 128K, even …

    ... above $C0 (check)
    -contended RAM page paged in (check)
    RAM which is not RAM 0 is paged ... to f0 (the correct value) when RAM 0 is back in. As ... I only page other RAM pages to copy stuff, this ...
    na_th_an na_th_an May 2014 Brand new software
  • Wanted: ZX81 boxed with 16k RAM PackI'm looking for a clean, working and good condition ZX81 with original Sinclair 16K RAM Pack. Would prefer if it was in a box. Oh and if you have 3D …

    ... ZX81 with original Sinclair 16K RAM Pack. Would prefer if it ... having a horribly wobbling and unstable RAM pack hanging off the back ...
    wile e coyote wile e coyote August 2014 Wanted
  • R Register, Contended RAM and ClonesHi. I've had a quick look at the CSS FAQ but didn't spot quite what I'm looking for (also the CSS FAQ doesn't have much detail of the clones - there …

    ... I read and use the value. The time spent in the ... is the effect of contended RAM on the R-register? I ... run any code in contended RAM, but I do make several ... , but then without the contended RAM the HALT would take place ...
    icabod icabod July 2006 Development
  • 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…

    ... would say that RAM was alternating between the value 20h (00100000b) and ... /> The reset button is very unstable and has to be pushed ...
    ASM ASM October 2010 Hardware
  • changing extended RAM pages in SpinIs it possible to edit the data in 128k extended RAM pages in Spin? I've tried both the debugger tool and the pokes tool and, although they let me ma…

    ... the data in 128k extended RAM pages in Spin? I've ... line reverts to its old value and the change gets applied ...
    Battle Bunny Battle Bunny July 2011 Emulators
  • Difficult to find upper RAM fault.I've recently repaired an issue 3B 48K Spectrum that had a tricky to diagnose upper RAM fault, so I thought I'd post a report of what I found here. …

    ... see whether the RAM had retained the POKEd value - it had ... possible RAM addresses, from high to low, writing the decimal value ... from the upper RAM location retrieved the decimal value 34 (it ought ... not decrement a value to zero, the RAM-READ loop terminated ...
    Zorn Zorn April 2012 Hardware
  • Inefficient code in ROM, from ram-check to RAM-DONEHere is the inefficient code: [CODE] ;; ram-check L11DA: LD H,D ; Transfer the top value to the HL register LD L,E …

    ... ram-check
    L11DA: LD H,D ; Transfer the top value ... ; pair.

    ;; RAM-FILL
    L11DC: LD (HL ... JR Z,L11EF ; forward to RAM-DONE if faulty.
    ...
    [CODE]
    ;; ram-check
    EX DE,HL ...
    antoniovillena antoniovillena April 2012 Development
  • 16K/48K Lower RAM (4116) replacement.You may want to read [URL="http://www.worldofspectrum.org/forums/showthread.php?t=37957"]this thread[/URL] for background information on the quest t…

    ... replacement for the lower RAM that works in all ... column address to the RAM and so there isn ... appear on the lower RAM address lines. In particular ... models also have higher value resistors in series with ... the ZX Spectrum Lower RAM Replacement Module, pictured below ...
    Zorn Zorn May 2013 Hardware
  • quick RAM copy using LET in BASICI'm in the process of reviewing, revising and refining all the programming tips & utility routines which I've posted on this forum over the last eigh…

    ... if a free RAM address is a calculated value rather than a ... literal value then the STR ... COPY string to RAM or RAM to string or RAM to RAM
    GO ... , or destin location if in RAM;
    b$=source string expression ...
    Battle Bunny Battle Bunny July 2013 Sinclair Basic
  • Hooky - hook ZX ROM and rewire RST and NMI to RAM - rantThis is a rather long rant. Not for short tempered. :) The objective is to hook into RST "vectors" and NMI on a Spectrum without affecting the normal…

    ... best "safest" address in RAM for such a table?< ... (incl. Speccy) do a RAM test
    at startup. ... table before
    the RAM test / it will get ... Bummer. What if we replace RAM checking
    code with ... Z,test)_2 ; bad value (zero value)
    0x11EC DEC (HL ...
    tstih tstih July 2014 Development
  • QL add-ons valueI've gotten my hands on some QL accesoires: - 2x Trump card 2, only disk interface I think (there's no RAM on them) - 2x CARE Electronics cartridge, …

    ... I think (there's no RAM on them)
    - 2x CARE ... 4x 51256 SRAM chip (128KB RAM?) with batteries
    - A edge ... />
    Any idea about the value for these parts?

    bverstee bverstee September 2014 Hardware
  • Spectrum stuff for sale (ZX81, RAM pack, Tapes... etc)Selling the following: [IMG]http://s26.postimg.org/uk0ntdsq1/IMG_20140902_205737.jpg[/IMG] [IMG]http://s26.postimg.org/ronkmioq1/IMG_20140902_20575…

    ... original too)
    ZX81 16k RAM pack - Working
    Spectrum tapes ... 'm not familiar with the value of spectrum stuff so drop ...
    dreamscape dreamscape September 2014 Sales
  • +2A/+3 compatibility fixes thread!It might be a good idea to keep these fairly common +2A/+3 compatibility fixes (and requests) in a single thread for quick reference ;) Let's start …

    ... is set I register to value 0 and is used IM2 ... value from afress #FF and #100 and CPU jump to ZX ram ... . But is ZX computer have unstable IM2 vector (different value than ...
    velesoft velesoft September 2009 Games
  • Question about divide +Hi A friend has sent my a faultly divide + to see if I can repair it. If I use this divide+ with a spectrum 48K (That works perfectly with my stand…

    ... /> DivIDE Plus use 512kB RAM, but not as DivIDE memory ... can use only 32kB ram as original DivIDE interface. ... is 512kB rom + 512kB ram = 1MB memory. Divide Plus ... .[/QUOTE]

    Unstable vector on data bus is ... /> 2) fix vector value on data bus. Always ...
    velesoft velesoft May 2011 Hardware
  • I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…

    ... x Card Reader + 2 x RAM + 1 x DVD + 1 x ... without making the whole machine unstable.

    Therefore logically the ... /> 1 stick of Ebuyer extra value RAM @ 4Gb
    MS Windows 7 ...
    Alien 8 Alien 8 July 2011 Chit chat
  • NEW Jonathan Cauldwell release MORE TEA VICAR? - 30th ANNIVERSARY GAMEThe long awaited Jonathan Cauldwell game MORE TEA VICAR? cassette version is released today, on the 30th birthday of the Speccy. Available from the …

    ... I set to value #E5 and use switching between ram pages 0 ... 16kB of adress space. If ram 0 is set, then game ... ram1, then ULA snow and ram is unstable...

    I fix ... /> We can use ram page 4 instead ram page 1 and game ...
    velesoft velesoft April 2012 Announcements
  • NEW Jonathan Cauldwell release MORE TEA VICAR? - 30th ANNIVERSARY GAMEThe long awaited Jonathan Cauldwell game MORE TEA VICAR? cassette version is released today, on the 30th birthday of the Speccy. Available from the …

    ... I set to value #E5 and use switching between ram pages 0 ... 16kB of adress space. If ram 0 is set, then game ... ram1, then ULA snow and ram is unstable...

    I fix ... /> We can use ram page 4 instead ram page 1 and game ...
    PopoCop PopoCop April 2012 Announcements
  • Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …

    ... RAM faulty $7FFC : and then : Upper RAM error XP SFFFF ADSDF : 76543 Value ... is unstable . Upper RAM error encountered. Cannot proceed ... further both lower and upper RAM ...
    harriusherbartio harriusherbartio April 2017 Hardware
  • Not bored with the Boards.Going through some old tapes stored rather badly I came across an unlikely item that that I must have stored away quickly with other low grade items …

    ... yet replaced the faulty upper RAM chip . I have the ... says now

    Uper Ram "Value is Unstable"

    Bad bits ... this result :-

    Lower RAM error at $7FFF
    Bad ... further both upper and lower ram is bad .

    ...
    harriusherbartio harriusherbartio March 2020 Hardware
  • Emulator compatibility with real SpectrumHi emulator programmers... Having spotted for the last 6 months that my iPAQ is still missing a Spectrum emulator I started typing last tuesday - an…

    ... resets the computer because the value read is unexpected I guess ... the lower part of the RAM is slower because of the ...
    Anders Anders September 2001 Emulators
  • How do I know the RAM size?Just left my parents after cleaning out my pile of old stuff in their basement. Know what I found? My old ZX Spectrum.... Those were the days! Never …

    ... ZX81, though.
    3K om RAM, my friends!
    My question ... I tell what size of RAM I've got in my ...
    David David February 2001 Sinclair Miscellaneous
  • 128 Memory PagingI'm having a problem getting my brain around paging. Well, actually the bit I don't understand is how reading I/O ports works! I hope the collective …

    ... so to do a simple RAM page swap, all I want ... I need to read the value at port 32765, set ... accordingly, then write the new value back out.

    ... understand - you set the value in BC to the port ... /> OUT (C),A ;Write new value to 32765

    ...
    trellis trellis August 2003 Sinclair Basic
  • A great ROMBack in the early 90s my ZX clone (called "Cobra" if anyone's interested) had a sort of a "SamRam" (actually an alternate ROM accessed via a NMI) tha…

    ... and monitor used very little RAM and you could load even ... to find absolutely nothing of value related to it (only a ...
    GOC GOC August 2003 Sinclair Miscellaneous
  • Character SetAlright, this may not be the right forum for this question (it does sort of relate to a game which I'm trying to get working properly - long story) -…

    ... up, there is a 2byte value somewhere that normally points to ... you could poke a different value in there and make it ... user defined character set in RAM if you wanted - does anyone ...
    Neil^P Neil^P August 2004 Games
<1234567…34>

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HitBox

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value 9.4K 14.6K
unstable 444 481
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