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<1…12131415161718…34>
  • ROM disassembly of CAS disk interfaceI finished disassembling of the ROM with operating system of CAS (Cheyenne Advanced Systems) disk interface. This interface is a clone of Beta 48 and…

    I finished disassembling of the ROM with operating system of CAS ( ...
    TK90XFan TK90XFan June 2016 Sinclair Miscellaneous
  • TommyGun with Debugginghttp://goo.gl/HfSXev?gdriveurl Ok, so this is a pretty big release for me and I have added a lot of stuff into the code editor. Mainly of course …

    ... Debug string support
    Uses rst 0 redirection
    Need to ... , Delete All, Enable/Disable (checkbox), Enable All, Disable All, Properties
    Added ...
    Kiwi Kiwi July 2016 Development
  • The Complete Spectrum ROM Disassembly - SkoolKittedAs [url="http://worldofspectrum.org/forums/discussion/52745"]indicated previously[/url], I've recently been working on converting Logan and O'Hara's …

    ... and O'Hara's Spectrum ROM disassembly into SkoolKit format.
    rom/"]The Complete Spectrum ROM Disassembly[/url]
    SkoolKid SkoolKid July 2016 Announcements
  • +3e and disk geometry questionsI've bought a ZX-UNO and I want to use a mixt disk (IDEDOS+FAT) on it. That ZX-UNO has +2e DivMMC ROMs version 1.43 (the only version that works with…

    ... +3e with a DivIDE (ROM version 1.38).

    512 Mb ... the same as with 1.38 version, so maybe version number ...
    Zup Zup September 2016 Hardware
  • So it occurred to me; "Why bother with going into 48K BASIC when you can just....wrap the machine code calls inside a 'RST #28;DEFW addr:RET'?" Of course, you DO need a small M/C routine to do that, and ta-daaa, here it is: [cod…

    ... machine code calls inside a 'RST #28;DEFW addr:RET'?"
    Call48 RST #28 ; call a routine in ... the value at 'addr'
    RST #28 ; as above ^^
    ... the RST #28 to call routines in the 48-BASIC ROM, there ...
    The_Bert The_Bert September 2016 Sinclair Basic
  • Startup colours of the Spectrum ROMHi Folks, Thought I would have a go at changing the startup colours of the Spectrum ROMs used within BasinC which ships with 48.rom (16384 bytes) …

    ... ships with 48.rom (16384 bytes) and plus2.rom (32768 bytes). Looking ... in the Complete ROM Disassembly I made the following ... br />
    In the plus2.rom file I changed:

    ROM disassembly.

    Many ...
    Paddy Coleman Paddy Coleman October 2016 Development
  • Recommend games that don't need the ROM ?I'm looking for a few games that: * Are freely available as .sna files * Do not need the ROM at all * Have motion on screen after snapshot resta…

    ...
    * Do not need the ROM at all
    * Have motion ...
    Mr X Mr X October 2016 Games
  • The state of source level debuggingI was just wondering if we can put on a table everything we collectively know about source level debugging for ZX Spectrum to get an overview of curr…

    ... to replace the original Sinclair ROM. For electronically-non-literates this ...
    tstih tstih October 2016 Development
  • bizarre error on a grey ZX Spectrum+2 - the long search for a small problemHi, I got a ZX Spectrum+2 that worked a bit but crashed while loading or running 128k games. I installed a 128k-test-ROM that told me about RAM fa…

    ... . I installed a 128k-test-ROM that told me about RAM ... to work. The 128k test ROM did not find any error ... transistor ZTX650 to ground to disable the transverter while using the ...
    ingo ingo November 2016 Hardware
  • ROM PRINT routine issuesHi all, I am using the ROM print routines a lot in my assembly program and I'm experiencing issues. I am changing the system variable DF CC to po…

    ... />
    I am using the ROM print routines a lot in ... character. I'm assuming the ROM print routines are updating other ...
    Kevin_C Kevin_C December 2016 Development
  • can a backup device damage the spectrum ROM?as above. been using a specmate device which seems to have corrupted my speccys ROM.

    as above. been using a specmate device which seems to have corrupted my speccys ROM.
    cypher007 cypher007 January 2017 Hardware
  • Random Numbers, USR Return Values & Timing BASICI've been trying out Jon Ritman's random number routine, published in Your Sinclair Aug'87. Apart from a timing comparison I also did a frequency ana…

    ... in BC
    rst $28
    defb $3D,$38 ;restack,end_calc
    Battle Bunny Battle Bunny January 2017 Sinclair Basic
  • how to edit a romhi, i just wanted to know the best way to edit a rom. im going to do it in an emulator first and then run it in a spectrum.

    hi,

    i just wanted to know the best way to edit a rom. im going to do it in an emulator first and then run it in a spectrum.
    digital digital January 2017 Hardware
  • where is border/ink, etc stored in rom?hi, i just wondered where these were stored in rom and how i change these?

    hi, i just wondered where these were stored in rom and how i change these?
    digital digital January 2017 Sinclair Miscellaneous
  • Emulating transfersI've been studying some games saved with transfers, and I'm surprised that almost no emulators have included those interfaces. This is my (incomplete…

    ... - Phoenix: It pages ROM over the Spectrum ROM. Not emulated.
    ... /> - Ramjet: It uses only ROM. Not emulated.
    - Datel ... between standard and "alternate" ROM. That mimics the behaviour ... - A key that enable/disable ROM writing, that allows to change ...
    Zup Zup February 2017 Emulators
  • Wanted - Space Raiders ROM CartridgeI keep an eye on eBay and there's a Space Raiders ROM cartridge up for sale at the moment, but I don't think it's worth £70 for such a tatty box. …

    ... there's a Space Raiders ROM cartridge up for sale at ...
    joefish joefish March 2017 Wanted
  • Disable IF1 with switchOk probably silly question time but if you don't ask you'll never know, I have the JS128 which is great and has a jumper on the board to disable the …

    ... jumper on the board to disable the onboard DIVMMC(or whatever ... switch to the IF1 to disable it and the rest of ...
    thesender thesender March 2017 Hardware
  • Disabling the ROM without removing the whole thingHi! I've got my hands on a non-working issue 6a. I suspect the ROM may be bad, but other things may be faulty as well. I've read that in an otherwis…

    ... issue 6a. I suspect the ROM may be bad, but other ... otherwise working speccy removing the ROM gives a very specific screen ... problem to the ROM.

    But the ROM (a NEC type ...
    Mikelone Mikelone April 2017 Hardware
  • New ZEsarUX 5.0Hi! ZEsarUX 5.0 is out! :) You can download it from the URL: https://sourceforge.net/projects/zesarux/ Finally I have succeded emulating Si…

    ... lots of dissassemblies of the ROM and testing keyboard to know ... firmware
    Added setting to disable autoframeskip
    Added setting to ... bios
    Added setting to disable beeper
    Improved Debug CPU ...
    chernandezba chernandezba April 2017 Emulators
  • Horace and the Spiders and Planetoids ROM cartsOffloading another 2 rare ROM carts, in pretty good nick. £60 for both seem fair? [img]https://s15.postimg.org/y9mibpyrf/2017-05-02-1095.jpg[/i…

    Offloading another 2 rare ROM carts, in pretty good nick.

    £60 for both seem fair?

    [img]https://s15.postimg.org/y9mibpyrf/2017-05-02-1095.jpg[/img]

    [img]https://s2.postimg.org/eloo6fdqh/hats.jpg[/img]
    daveysludge daveysludge May 2017 Sales
  • 128 toastrack ROM "upgrade"Hello all As I hate the UK-model menu & editor I would like to replace the original with the (translated) Spanish ROM but can't find any plain image…

    ... original with the (translated) Spanish ROM but can't find any ... me in EightyOne only as ROM-cartridge (as it should), not ... as ROM replacement.

    Any hint ...
    Mad Fritz Mad Fritz June 2017 Hardware
  • ZX ROM in 64 characters a lineDear ZXS users, I am glad the today's release is not only concerning MB-02+ as it is normally the case with me, but it concerns really everyone, sinc…

    ... everyone, since everyone uses ZX ROM :).

    Busy agreed and ... created superb ROM patches which make ROM print in 64 ...
    Hood Hood June 2017 Sinclair Basic
  • ROM emulation in softwareHi, first of all -- I only have shallow / uni knowledge of hardware, electronics, and physics. So forgive me for asking things that are out of that …

    ... 20ns. But the ZX Spectrum ROM chip timing shows that its ... to somehow wire ZX Spectrum ROM slot to some fast PC ... feed read the ZX Spectrum ROM address and feed it data ...
    tstih tstih June 2017 Hardware
  • Afterburner rom showing sound options in 48K mode?I am running an [i]Afterburner (1988) (Activision)[/i] rom (which I can't remember where I got it from) that shows the music or sound effects choice …

    ... [i]Afterburner (1988) (Activision)[/i] rom (which I can't remember ...
    Renegade Renegade July 2017 Games
  • Speeding up PRINT code in ROMHi Folks, I seem to recall that someone stated the PRINT command is rather slow because it has to handle screen and printer printing - is this cor…

    ... it be possible to effectively disable this dual code so that ...
    Paddy Coleman Paddy Coleman July 2017 Sinclair Basic
  • Thought this would be simple... Z80Hi Folks, Started to read "Beyond simple BASIC, Delving Deeper into your ZX Spectrum" by Dilwyn Jones. This is a great book and I came across the…

    ... across the section about ROM routines which suggested using ... X Coordinate
    CALL 8927 ; ROM PLOT Command

    DRAW ... (X)
    CALL 9402 ; ROM LINE DRAWING Subroutine

    RST#8. Looking in the Complete ZX Spectrum ROM Disassembly ...
    Paddy Coleman Paddy Coleman August 2017 Development
  • Burning a ROM for a 128k +2 (Grey)Hi Guys, I would like to change the 128k +2 menus I have actually in French with English. The OS is in a 27C256 eprom. I do have a programmer and …

    ... where to get the correct rom file to load and how ...
    repetto74 repetto74 September 2017 Hardware
  • A Neat Redefine Keys RoutinePreviously, I’ve only shared this routine with a couple of people via PM, but I’ve now decided to make it public. I optimized it for size, so it uses…

    ... 0
    call 8859 ;inside ROM routine BORDER ($2294)
    call ... ) ;? down (vertical coordinate)
    rst $10
    ld a,22 ... ;22 across
    rst $10

    ld ... jp 8252

    as_is_key rst $10 ;print the key as ...
    Ast_A_Moore Ast_A_Moore October 2017 Development
  • Precisely what is the ROM licencing situation?Freeware use, that is. Are the Speccy ROMs allowed to be used in any utility related to Spectrum emulation, or just in actual emulators? Is it …

    ... to use part of the ROM (I'm thinking specifically of ... set), or does the entire ROM have to be used?
    robert@fm robert@fm October 2017 Emulators
<1…12131415161718…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
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    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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38 2K 2.7K
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