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<1234567…34>
  • 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…

    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 made as to whether ROM or RAM is addressed."

    Does this mean that pushing a value when SP
    Unique Unique February 2005 Development
  • Convert .TZX to .ROM filesI own some ISO ROM files (from Individual Software) in the TZX format. How can I convert that to .ROM for use with an emulator? Where can I get other…

    I own some ISO ROM files (from Individual Software) in the TZX format. How can I convert that to .ROM for use with an emulator? Where can I get other .ROM files?
    wilko0070 wilko0070 January 2004 Emulators
  • new programmer needs information hi , i have been learning c++ for a while and am trying to make games using windows but being 28 and nostalgic , i thought it would be fun try and f…

    No, you can't write to ROM - it's Read Only Memory. It's part of RAM (Random Access Memory).
    cyborg cyborg May 2004 Development
  • Replacement ROMsSo, I've replaced a couple ROMs in my +3 to be a +3e. I used a couple of 27c256's, which has worked a treat. So if I wanted to replace the ROMs in …

    ... is 3 condition required to activate EPROM (ROM) chip for read:
    write to ROM address space will cause overload ... activated at time - CPU and ROM). It will happen btw. every ... keyb. because of small Speccy ROM bug, but it takes little ...
    piters piters December 2006 Hardware
  • The Complete COBRA Disassembly (Joffa's!)Now that I've seen this thread about Skool Daze / Back to Skool disassemblies I've remembered I started an ambitious project quite a few years ago: …

    ... !!! I believe that if you write to ROM addresses enough times, it will ... I copy the critical routines to work RAM at start-up ...
    Madonna Mk 2 Madonna Mk 2 August 2009 Development
  • The Complete COBRA Disassembly (Joffa's!)Now that I've seen this thread about Skool Daze / Back to Skool disassemblies I've remembered I started an ambitious project quite a few years ago: …

    ... I believe that if you write to ROM addresses enough times, it ... copy the critical routines to work RAM at start ... -up to be able to self-modify! ;)[/ ... Well, you always have RAM to play with - but when ... it involves a major re-write. And the only reason ...
    frobush frobush August 2009 Development
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... hell do some games try to write to ROM? I mean, what did their ... to some low regions of ROM? Since on a real machine those write ... situations (i.e. ignores all write attempts below 16384). Is it ... you guys get to know some games tried to overwrite ROM? Does it ...
    PeterP PeterP September 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... hell do some games try to write to ROM?[/quote]

    ... reasons things might try writing to the ROM.

    ... Yes. In fact, even the ROM itself does it.
    ... stack is contained within ROM? Should they be ignored ... if you can write to it, would it?
    Philip Kendall Philip Kendall September 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... were possible. I hope writing to ROM is the last of surprises ... />
    It's very easy to write to ROM - I can do it right ... ),n opcode with HL set to
    Dunny Dunny September 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    [QUOTE]
    It's very easy to write to ROM - I can do it right now, with (as you stated) a simple LD (HL),n opcode with HL set to
    PeterP PeterP September 2011 Emulators
  • writing an emulator-newbie needs helpHi, this is my first post here. I decided to write a minimalistic emulator of ZX Spectrum-no emulation of advanced peripherals, no emulation of sound…

    ... br /> - allow the user to write anything to any address from 0 ... /> Yes that's right. ROM is [b]m[/b]emory ... with lower 16K as ROM and upper 48K as ... perfectly easily by trying to write to ROM on a real speccy ... other device that has a ROM.

    I ...
    ccowley ccowley September 2011 Emulators
  • .SNA snapshot compatability between esxDOS and emulators?Currently I am using a ZX Spectrum 128K (toastrack) with DivIDE Plus (with new GAL's) and esxDOS 0.8.5. It saves and loads 128K .SNA snapshots withou…

    ... file from Velesoft to install esxDOS 0. ... p200[/URL] . According to the latter, before pressing ... 0' to not only write to rom page 1, but also to rom page ... can do the following to reproduce the 'hanging' ... so wile pressing Space to reinitialise esxDOS helps.
    ZXHistory ZXHistory July 2013 Hardware
  • .SNA snapshot compatability between esxDOS and emulators?Currently I am using a ZX Spectrum 128K (toastrack) with DivIDE Plus (with new GAL's) and esxDOS 0.8.5. It saves and loads 128K .SNA snapshots withou…

    ... ;p=200#p200[/url] . According to the latter, before pressing 'W ... 'W,0' to not only write to rom page 1, but also to rom page 0 ...
    ZXHistory ZXHistory July 2013 Hardware
  • ZX Spectrum CartridgesI have been thinking of "cloning" ZX Cartridges for a while (case, board and silicon skirt), to be able to make new releases or replace damaged cartr…

    ... address in the ROM (probably the last) to be the bank ... to determine, if it's a read or a write.< ... />
    If you try to write to ROM, what happens is a DATA ... the same time that ROM is forcing the address ... to switch the ROM OFF, so that ZX ROM or IF1 ROM ...
    RMartins RMartins June 2016 Hardware
  • 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…

    ... rewiring RST 0x00 /,
    - ROM extensions,
    - IM1 routines. ... used
    to fill the gaps in ROM /translation: ... />
    QUESTION: disclaimer ... ROM overwrites address FFFD thus ...what ... 0x120E LD (5C7B),HL ; write to 5C7B (QUESTION: sysvar? stack ...
    tstih tstih July 2014 Development
  • Urgent Help needed to fix this: calling all machine code gurusI am currently trying to write tutorials on the amazing Orfeus music composer by Proxima which allows you to do multi channel music through the beepe…

    I am currently trying to write tutorials on the amazing ... Proxima which allows you to do multi channel music ... player. The code is exported to address 35000.

    to allow it to run at any ... this, must be some call to ROM
    dec sp
    ...
    robpearmain robpearmain November 2006 Development
  • Recent Returnee to the spectrum fold needs hardware adviceHi all. Thanks for taking the time to read this. This is my first post to this forum after I stumbled on this site just a few weeks ago, i only reg…

    ... lead weight so I can write to the spectrum +3 disk ... name at the minute) to write (possibly using MSDOS as ... I like Gary Lancaster's ROM which reads in snapshots and ... mind getting somebody to burn me a ROM chip but ... a version of his ROM which will read these ...
    Modern Games are rubbish! Modern Games are rubbish! October 2007 Hardware
  • splib2 from ROMI'm trying to generate IF2 ROM games for ZX Spectrum 16K using z88dk + splib2. So far I've managed to create a new crt0 file and to generate valid RO…

    I'm trying to generate IF2 ROM games for ZX ... new crt0 file and to generate valid ROMs using ... or they just read/write to the structures generated in RAM ... , masks...) in ROM or is it written to an any point ... especify I want sp_Clipstruct to be located on RAM ...
    na_th_an na_th_an December 2007 Development
  • alternate BASIC ROMI've come up with a few patches to the standard ROM to make it use the 128 shadow screen by default. The ROM is reorganised as follows: RAMTOP is se…

    ... with a few patches to the standard ROM to make it use the ... 128 shadow screen by default. The ROM ... is reorganised as follows:

    RAMTOP is set to ... routines that used to write to the lower screen area now write to the upper ...
    chev chev October 2008 Sinclair Basic
  • Utility to read/write to memory cards formatted for +3EThis post comes from [url=http://www.worldofspectrum.org/forums/showthread.php?t=25658]this thread[/url]. I've released a small command-line utility…

    ... from your hard disk and write them into a +3DOS partition ... whole TAP archive, and write each file to a +3DOS partition. It ... included, so a programmer can write a nice GUI for handling ... ]

    Feel free to upload it to WOS or the web ...
    mcleod_ideafix mcleod_ideafix July 2009 Emulators
  • CPCDiskXP v2.5.1 with support (limited) to write for USB floppy drivesHi, I am the developer of [URL="http://www.cpcmania.com/"]CPCDiskXP[/URL] and wanted to inform you that there is a new version of the program with su…

    ... with support (limited) to USB floppy disk drives. ... the dsk, we will write to a USB floppy drive, ... by pressing the "Write USB Floppy" button
    ... ) and click 'Write'
    [*]Ready to be tested in ... use low-level writing to support protected discs, ...
    Mochilote Mochilote March 2014 Emulators
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... and practical solution would be to simply produce a split-screen ... . When the Z80 writes to memory, that write is exposed on the ... connector. How about applying that write to an external RAM chip, then ... 's ROM address space, and force it through a reset to then ...
    joefish joefish April 2014 Hardware
  • Arcade Game Designer & How to Write Spectrum Games DownloadHi, Would anyone be able to stick Arcade Game Designer 4.6 (Spectrum) Software and Manual, and How to Write Spectrum Games (0.6) up to Dropbox or …

    ... />
    Would anyone be able to stick Arcade Game Designer 4 ... Software and Manual, and How to Write Spectrum Games (0.6) up ... similar.

    I did write to Jonathan regarding the links being ... the download sites he uses to host the files, only lasts ...
    jonesypeter jonesypeter October 2015 Sinclair Miscellaneous
  • What has happened to Miles Kinloch?He was a great coder and did a really great work bug fixing the Plus D's G+DOS 2a and BetaDOS. Especially BetaDOS! I was a pen-friend back then and k…

    ... up with another bug up to the point he fixed them ... completely re-written Plus D ROM, v.1b! He even had ... if I had the opportunity to write to him again...

    Anyone ...
    geosiou geosiou November 2016 Sinclair Miscellaneous
  • Currah uSpeech ROM Paging and BootyHi, When I emulated the Currah uSpeech for [url="http://www.inkland.org.uk/inkspector"]InkSpector2[/url], I made it page in its own ROM on memory …

    ... page in its own ROM on memory writes to address $0038 in ... memory writes to $0038 are used to enable the uSpeech ROM is this ... 100 bytes, attempting to write to the first 95 bytes of ROM too, as ... the attempted memory write to $0038 and pages its own ROM in, when ...
    inky inky October 2019 Hardware
  • OUT to file, IN from fileOUT - sentences won't do much on emulators since they mostly communicate with external devices. If there was an emulator that would write the (last) …

    ... emulator that would write the (last) OUT-ed value to a file ... 's.
    The emulator could write to file 31.OUT the value ... as well. Your program would write to 31.IN and the emulator ... on the emulator-writer to adjust the emulator to your hardware.
    Dr BEEP Dr BEEP August 2002 Emulators
  • Some more questions about emulators!I just downloaded the Windows version of RealSpectrum, RS32. The problem is though that it crashes if I alt+tab to another application - is there any…

    ... crashes if I alt+tab to another application - is there anything ... RealSpectrum that allows you to write to the Spectrum's ROM(WriteRom=1 in ... not allow changes to ROM - is there a way to do this on ...
    alexsut alexsut July 2003 Emulators
  • OT: Please recommend a graphics viewerI'm looking for a graphics viewer to use to view the jpg files that make up the magazine scans (Crash, Your Spectrum, Sinclair User, etc). There are …

    ... looking for a graphics viewer to use to view the jpg files ... , so I know whether to load it up or skip ... directory as the jpg files (to save space on my PC ... I know they cannot write to a CD ROM, but what I want ... the thumbs from the CD ROM. I know Paint Shop Pro ...
    ewgf ewgf February 2005 Sinclair Miscellaneous
  • What Spectrum games have yet to be bettered on any machine?What Spectrum games do you think are still better than any other of their types, on any machine? I mean, Turbo Esprit is an absolute classic, but I t…

    ... and so manic. Back to Skool was technically better, ... were written to be fun, rather than to demonstrate graphics/ ... and the programmers were forced to write to a very limted hardware spec ... hardware and whose programmers tried to look good, with playability ...
    ewgf ewgf October 2005 Games
  • Aggravating problem with screensI've rewritten my Sam C runtime emulator code ( well almost ) to allow me to use my own routines for blitting sprites onto the screen, storing tiles …

    ... emulator code ( well almost ) to allow me to use my own routines ... the two pages into memory to write to a screen. So I really ... file that is attached to your program calls ROM routines ( RST 16 ... by the compiler to default to 'OPEN TO 3' and RAMTOP to
    32767 ...
    DonkeyPong DonkeyPong January 2007 Development
<1234567…34>

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