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  • TZX in ROM...Is it possible to modify BASIC ROM to load TZX images from external memories like Flash EPROM? [ This Message was edited by: klingler on 2004-07-0…

    ... /> ...do most games use standard ROM routines for loading the code/finding ... popular games all use the ROM routine, iirc. Remember that .tapROM ... of tap files use the ROM loader.

    D.
    Dunny Dunny July 2004 Sinclair Miscellaneous
  • TZX in ROM...Is it possible to modify BASIC ROM to load TZX images from external memories like Flash EPROM? [ This Message was edited by: klingler on 2004-07-0…

    ... /> ...do most games use standard ROM routines for loading the code/finding ... history, people modified the load routines for speed/copy protection reasons ...
    Philip Kendall Philip Kendall July 2004 Sinclair Miscellaneous
  • in-game soundhas anybody an experience in writting beeper routines? i tried to code some sound fx but it sounds really horrible...

    ... are somewhat okay routines out there. Using the ROM's beeper routine ...
    ekoman ekoman July 2004 Development
  • InterruptsA small piece intended for the FAQ. Comments, corrections, additions welcome. Notably: * How long does the 48K ULA hold /INT low? * What happens i…

    ... occur with very short interrupt routines; see the retriggered interrupts ... the first byte of the ROM (DI, 0xf3) would cause ... a bug in the ROM's NMI routine. It ... was intended that the ROM would jump to the value ... test was reversed in the ROM, so it would jump ...
    Fraser Fraser July 2004 Development
  • RGB values for Spectrum colorsDoes anybody know the true rgb color values for the spectrums 15 colors. I'll assume that black is 0,0,0 White is probably 255,255,255 But what are t…

    ... /SAMCo format for their `patched` rom routines to make a SAM act ... 48K, without the actual 48K rom being needed...

    I ...
    CKay CKay September 2004 Development
  • RGB values for Spectrum colorsDoes anybody know the true rgb color values for the spectrums 15 colors. I'll assume that black is 0,0,0 White is probably 255,255,255 But what are t…

    ... /SAMCo format for their `patched` rom routines to make a SAM act ... 48K, without the actual 48K rom being needed...

    I ... SamDos, load in the Spectrum ROM in at 65536, then load ...
    Quazar Quazar September 2004 Development
  • 3d Code... simple Anyone know where I can get some examples of 3d routines written in basic... I`ve done some googling, and come up with some source for PowerBasic or…

    ... it was a scroller using ROM routines, then using my own screen ...
    Quazar Quazar September 2004 Development
  • I need ASM for random numberI need to generate a random pair of coardinates in asm so that x=random no between 0 and 31, y=random no between 0 and 23. Any ideas on how to code …

    Hi,

    You could use this one if someone founds out why it returns with a Integer Out of Range error. :(

    [code]

    ORG 32768
    LD HL, (23672)
    LD (_RANDOM_SEED), HL ; Initialize the seed for random ...
    horace horace September 2004 Development
  • ZX-PC InterfaceRight - i'm 34 and I cant take the pain of waiting for tapes to load any more - somethings gotta give ( either the tape deck or me ). I've seen a 'Z…

    ... ?
    [/quote]

    The ROM uses the loadroutines in the ... 48K ROM
    on #556 and #4C2 ... same LOAD and SAVE routines in the ROM (i.e in USR ... 128K-files without altering the ROM on the interface. Need to ...
    Dr BEEP Dr BEEP September 2004 Hardware
  • ZX-PC InterfaceRight - i'm 34 and I cant take the pain of waiting for tapes to load any more - somethings gotta give ( either the tape deck or me ). I've seen a 'Z…

    I believe the 128K LOAD/SAVE commands just call the 48K ROM routines. Of course BASIC doesn't have access to the extra memory so unless you have some client code to deal with the paging issue, I'm not sure how it would work.
    AndyC AndyC September 2004 Hardware
  • TZXs speed loadingIs it possible to write a program that will play back tzx files at double speed, the way that TAPER can play back z80 files at 3000 baud? The Z802TZX…

    ... used the ROM loader, had custom (usually speedlock) loading routines. Once you ...
    Dunny Dunny September 2004 Sinclair Miscellaneous
  • games written using game writng programsI was reading through some issues of crash not long back and one article was about some 16 year old that wrote Frank n stein for the speccy(never pla…

    ... to write their own sprite routines -- which fitted me to a ... because they used Nine Tiles' ROM? :)

    The other compiled ...
    robert@fm robert@fm September 2004 Games
  • Zecut0r and ZAFA while ago (about 2 yrs)i took VbSpec and tried to port it to Delphi 6. Althought it was pretty weak, it. Meanwhile DelphiSpec 0.1 appeared and i wa…

    ... forth word to call Spectrum ROM routines would be useful, would help ...
    Steve(spt) Steve(spt) September 2004 Emulators
  • is it easy to learn z80 machine codewell is it?

    Hmm, my memory of Speccy ROM routines is hazy, but aren't you supposed to do a stream select before doing any RST 16s?

    [ This Message was edited by: AndyC on 2004-10-27 14:09 ]
    AndyC AndyC October 2004 Development
  • is it easy to learn z80 machine codewell is it?

    ... /> Hmm, my memory of Speccy ROM routines is hazy, but aren't ...
    Dr BEEP Dr BEEP October 2004 Development
  • +2A "Ghost" programHi all - first time posting here, so I'll do a quick background - I was a (far too) dedicated 48k and +2A gamer in my younger days. Thanks to the mi…

    ... is providing a whole new rom. :)

    (maybe it's ... that it copies the 48 ROM, restores some of the bits ... then bodges the tape loading routines to cope with the fact ... will games with custom loading routines as the timing will be ...
    AndyC AndyC October 2004 Games
  • is it easy to learn z80 machine codewell is it?

    Or in short - ROM routines are your friend (so long ...
    DavidB DavidB October 2004 Development
  • Legal Sinclair clones?Are any of the cloned Sinclair computers legal, other than the original Timex machines? Are the QL Clones legal? Could a legal clone be produced with…

    ... anything with it without the ROM and Amstrad does not ... in hardware) as the default ROM.
    [/quote]

    ... one could write a compatible ROM from scratch, keeping the important ... work. The first team reverse engineered the BIOS and determined where ...
    Alcoholics Anonymous Alcoholics Anonymous November 2004 Sinclair Miscellaneous
  • New Spectrum game For all those who are interested, the game I cobbled together at yesterday's ORSAM show in Norwich is now available to download from my website. [u…

    ... it uses a couple of routines from PGD, these were simplified ... the screen names are just ROM error messages. That said, there ...
    jonathan jonathan November 2004 Announcements
  • Speccy games improvements on a Nintendo DSKnowing that speccy emulators on GBA will work just the same in the new Nintendo DS, i was thinking in which improvements could be implemented in the…

    ... gameboy anyway? Is the an official SDK and some simple hardware ... a cartridge that has both ROM and RAM, so I could ...
    J?rg Pleumann J?rg Pleumann December 2004 Games
  • Speccy games improvements on a Nintendo DSKnowing that speccy emulators on GBA will work just the same in the new Nintendo DS, i was thinking in which improvements could be implemented in the…

    ... gameboy anyway? Is the an official SDK and some simple hardware ... a cartridge that has both ROM and RAM, so I could ...
    darkman darkman December 2004 Games
  • There's a bug in my Speccy, Dear Liza, Dear Liza...Hi guys, Just me being annoying again - Can anyone out there in 'Internetland' help me with ideas about what could be causing a bug in my Speccy em…

    ... for non-complex asm routines and for the ROM to execute)
    ROM assembly - I found that you ... when you know what the ROM is trying to do.
    ROM we have.

    D ...
    Dunny Dunny December 2004 Development
  • MemoryI am writing a game for the Spectrum and need to store a lot of map data. What is the lowest address I can start to store the data at ?

    ... you're not using any ROM routines whatsoever - and that goes for ...
    gasman gasman December 2004 Development
  • MemoryI am writing a game for the Spectrum and need to store a lot of map data. What is the lowest address I can start to store the data at ?

    ... IF1
    24064 - 56831 ZX81 ROM and RAM (16K)
    56832 ... . Be sure not to use ROM-routines that uses SYSVARs then. Otherwise ...
    Dr BEEP Dr BEEP December 2004 Development
  • Codemasters CD-ROMI was thinking of this: how about to write a letter to Codemasters about re-launching their famous CD-ROM with all of their Spectrum games (only thin…

    ... their games on official re-release on a CD-ROM!

    Uros Zupan Uros Zupan February 2005 Games
  • Codemasters CD-ROMI was thinking of this: how about to write a letter to Codemasters about re-launching their famous CD-ROM with all of their Spectrum games (only thin…

    ... their games on official re-release on a CD-ROM!
    [/quote ... ever see a retro CD-ROM compilation from Codemasters, it'll ...
    monty.mole monty.mole February 2005 Games
  • Codemasters CD-ROMI was thinking of this: how about to write a letter to Codemasters about re-launching their famous CD-ROM with all of their Spectrum games (only thin…

    ... their games on official re-release on a CD-ROM!
    [/quote ... ever see a retro CD-ROM compilation from Codemasters, it'll ...
    Uros Zupan Uros Zupan February 2005 Games
  • Codemasters CD-ROMI was thinking of this: how about to write a letter to Codemasters about re-launching their famous CD-ROM with all of their Spectrum games (only thin…

    ... their games on official re-release on a CD-ROM!
    [/quote ... ever see a retro CD-ROM compilation from Codemasters, it'll ...
    mel the bell mel the bell February 2005 Games
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