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<1…15161718192021…34>
  • CPI emulationI'm currently writing Sinclairean's emulation assembly for the CPI/CPD/CPIR/CPDR instruction group. Does anybody know what exactly the behavior of th…

    ... [B]memory write[/B] cycle, just like the LDI/LDD/LDIR/LDDR ... 't actually [I]modify[/I] memory, but I'm wondering whether ...
    Madonna Mk 2 Madonna Mk 2 March 2010 Emulators
  • SCREEN$ and Sinclair Basic: Help Required !Two simple questions: 1) When saving SCREEN$, how can I avoid the bottom of the loading screen from being chopped off by the 'Start Tape & Press Any…

    ... />
    2) When writing a BASIC loader to load back a ...
    Hercules Hercules March 2010 Sinclair Basic
  • Thanatos 128k - patched to work on ANY 128 model!A little something I somehow managed to do the past couple of days. A version of Thanatos 128k which works on not just the 128 but also the +2, +2a a…

    ... you typed CAT in +3 BASIC, it would say 73k available ... in Fuse and copied the BASIC loader and the SCREEN$ to ... to what memory address it was being loaded into (the basic loader ... it was being loaded into memory address 25088. Copied it to ...
    pottyboy pottyboy March 2010 Games
  • Image to ZX Spec 1.1 Now Freely Available!Image to ZX Spec 1.1 Now Freely Available! [IMG]http://mirror.viperfang.net/silentdevelopments/images/ent-preview1.1.zx.png[/IMG][IMG]http://mirror.…

    ... multi core processors).
    [*]Updated BASIC slideshow program with new warning ... image conversion colour choice.
    [*]Memory usage increased for larger image ...
    brownb2 brownb2 March 2010 Announcements
  • Real Spectrum screen flicker with SCREEN$I've written a basic loader to simply do a 'load "" screen$' based video from a divide+ however I'm finding the Spectrum can't render a screens and a…

    I've written a basic loader to simply do a ' ... memory? Ideally this would have to work within a loop in basic ...
    brownb2 brownb2 March 2010 Development
  • ZX Basic 1.2.5 - a BASIC CompilerWell, my old post about ZX BASIC seems to be gone (maybe this phorum purges old threads?), so I started a new one. After more than 6 month, I've fin…

    ... , my old post about ZX BASIC seems to be gone (maybe ... a new version of ZX BASIC. It's a free compiler ...
    boriel boriel March 2010 Development
  • An update on ZX BASIC support for the SpectranetOne for zxbruno, I hope :-) So just an example of what now can be done with the network filesystem and BASIC. The following listing is of a program …

    ... with the network filesystem and BASIC. The following listing is of ... this on the Spectrum, using BASIC and streams:

    [code ... send data over ethernet from BASIC. You can PRINT # to that ... script that expands the ZX BASIC tokens.
    Winston Winston March 2010 Sinclair Basic
  • Midi Out from machine codeI need to send midi-signals by machine code, while Basic is too slow for my current project. I already read I can use hookcode #11E, but I have some …

    ... the 128 and +2, memory is entirely controlled by ... (0-7) to map into memory at 0C000h.

    memory between 0x4000 and 0x7fff, ... 48K BASIC.

    Bit 5:If set, memory paging ...
    ROM 3: 48 BASIC
    Bit 3: Disk ...
    bverstee bverstee April 2010 Hardware
  • Image to ZX Spec 1.2 Released (Video and high performance support)Yes I know it's only been about three weeks since 1.1 but I've been working very hard on this version and has a major work engine overhaul for multi …

    ... .
    - Added tap video/slideshow basic loader option.
    - Added Buffered ... performance (reduced object overhead).
    - Memory settings changed (>512MB contiguous ... aggressive heap mode for better memory use.

    Download 1 ...
    brownb2 brownb2 April 2010 Announcements
  • Resolution & Memory Question ...Hi, I'm hoping someone with some experience writing an emulator, or a vast knowledge of all things Spectrum can help me answer the following questio…

    ... information available on how the memory within the system is mapped ... , but where does the graphics memory sit, and what is its ... and what size is the memory available to the user etc ...
    micpringle micpringle April 2010 Emulators
  • ISO ROM 128 with TR-DOS 5.05(cz)This is new correct version of ISO ROM for ZX + BETADISK. Some extra basic command is designed specially for use in conmination with TR-DOS 5.05(cz).…

    ... registers ...)
    = (show basic info - ramtop, used memory, etc...)
    * (start utility ... erase memory , show only menu:
    AUTO RESET - return to basic (if basic ...
    velesoft velesoft April 2010 Sinclair Basic
  • ZX BASIC (Boriel's Compiler) - LibrariesWell, we have a nascent option on a sprite library coming together, thanks to na_th_an's fourspriter being retooled for the job. It's not general pur…

    ... is simultaneously almost completely sinclair basic compatible (It even allows ... easy fix to a Sinclair Basic Program) and a very ... able to write in basic and make M/C ... you're still using Hisoft Basic, it's time to ... -in functions for the basic compiler to make it ...
    Gedlion Gedlion May 2010 Development
  • Playing AY sounds with BASIC.Is it possible? If so how? I've seen in one forum a while back mention of using interrupts to play but AFAIK this is machine code only. The goal of …

    ... probably have some sort of basic sequencer display to arrange the ...
    brownb2 brownb2 May 2010 Sinclair Basic
  • Looking for a ZX81 gameHi all, I'm trying to find the name of a ZX81 game. It was a sort of maze / adventure game. There would be a maze on the screen, with something like…

    ... hoping-to-survive part. My memory is rather blurred as to ... the whole thing was a BASIC program.

    Anyone know ...
    RetroTechie RetroTechie May 2010 Games
  • Minor Update to Gasman's Midi2BEEPDon't know whether this is worthy an announcement, but for those of you who enjoyed Gasman's midi2BEEP utility, a new variant has been made called mi…

    ... rather than BASIC, and can handle larger files due to memory savings ...
    kgmcneil kgmcneil May 2010 Announcements
  • 4164 memoryHi all, I'm looking for 4164 memory, probably 4 chips. If you have some you willing to part with for some cash, let me know how much you want for it…

    Hi all,

    I'm looking for 4164 memory, probably 4 chips. If you have some you willing to part with for some cash, let me know how much you want for it + postage.

    Cheers.
    Winston Winston June 2010 Wanted
  • The Hisoft BASIC v1.2 Plus 3I am trying to compile a basic program with the [B]Hisoft BASIC v1.2 Plus 3[/B]. When i read the instructions to prepare the program to be compiled b…

    ... am trying to compile a basic program with the [B]Hisoft ... BASIC v1.2 Plus 3[/B].< ...
    arfgh arfgh June 2010 Sinclair Basic
  • Rom Routines list ?Exist some document that show detailled the routines on the spectrum ROM ? Ad for the Spectrum +3 ? are they the same or exist more ? Example i was …

    ... the same that in the basic [B]plot x,y[/B ... to the 32768 position of memory. When i made the Randomize ...
    arfgh arfgh June 2010 Sinclair Basic
  • How to insert special characters in Basic and ASM ?Look the next picture. [IMG]http://img25.imageshack.us/img25/9479/scode.jpg[/IMG] I dont know how to insert these black and diagonal characters. No…

    ... and diagonal characters. Not in basic, and not in ASM. For ...
    arfgh arfgh June 2010 Sinclair Basic
  • memoryprobably a dumb question i have 1gb memory in my PC, if i buy another 1gb memory (the same one i bought before.) and plug it into the other slot, do…

    ...

    i have 1gb memory in my PC, if i ... buy another 1gb memory (the same one i bought ...
    mile mile June 2010 Chit chat
  • +2A extended memory map & ULA bug?The [URL="http://www.worldofspectrum.org/faq/reference/128kreference.htm"]128K reference page[/URL] says: [quote]The ULA bug which causes snow when I…

    ... set to point to contended memory still occurs, and also appears ... set to point to contended memory.[/quote]

    Will the ... , with RAM bank 4 (contended memory) in 0x0000-0x3FFF, and place ...
    ajmoss ajmoss June 2010 Hardware
  • 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?…

    ... the CRC of ULA, the basic rom and the Z80 processor ... checks the basic rom, ULA, and Z80 processor and memory for the ...
    naz2000007 naz2000007 June 2010 Sinclair Miscellaneous
  • Getting back into Spectrum BasicAfter a LONG break from Spectrum Basic, have discovered BASIN and starting to do some old school programs. Then I can run them on Nintendo DS using t…

    ... a LONG break from Spectrum Basic, have discovered BASIN and starting ...
    briant briant June 2010 Sinclair Basic
  • Extended Basic InstructionsThis is the first time I send on this forum. First of all I send you a friendly "Hello" from Belgium, and I hope that you'll excuse my bad english..…

    ... and I forgot some extended basic instructions as Format..

    Puma V?loce Puma V?loce July 2010 Sinclair Basic
  • +3 Basic QuestionBeing doing alot of programming in Basic on my +3 recently and was wondering if there is a way to get my Basic programs to auto boot from disk?

    Being doing alot of programming in Basic on my +3 recently and was wondering if there is a way to get my Basic programs to auto boot from disk?
    Spectrum +3 Spectrum +3 July 2010 Sinclair Basic
  • Did the average Spectrum programmer really even try?I've been thinking about this recently, I'm always hearing Amstrad, and MSX users moaning about how unfair it was that they got "lazy Spectrum ports"…

    ... better uses up too much memory for one load or something ... box, bright with bright or basic with basic, no mix, correct pixel ...
    jesus 666 jesus 666 July 2010 Games
  • Seeking alternatives to DATA statementsAnyone know of any memory saving alternatives to storing a list of numbers, other than using DATA statements or poking data into addresses?... Im ti…

    Anyone know of any memory saving alternatives to storing ... ways of outputing the basic other than producing repetative ... could still technically be called BASIC (rather than crossing over ... to be allowable in any BASIC crapmo competitions & readable ...
    kgmcneil kgmcneil August 2010 Sinclair Basic
  • storing machine code in BASICApart from putting m/c above RAMTOP, which means that it has to be POKEd or LOADed separately after the BASIC program; or putting it in a REM, which …

    ... or LOADed separately after the BASIC program; or putting it in ... code between the end of BASIC and the beginning of VARS ...
    Battle Bunny Battle Bunny August 2010 Sinclair Basic
  • Memory mapping: Pentagon compatibility?I'm writing something that will rely heavily on the Spectrum's ability to switch screen buffers in hardware (port 0x7FFD). The original Spectrum 128K…

    ... 0x7FFD). The original Spectrum 128K memory map (with only one ... 0x1FFD on the Pentagon switches memory banks as described in [ ... Second category of expansion of memory over 128k.

    ... Third category of expansion of memory over 128k.[/quote]
    < ...
    ajmoss ajmoss August 2010 Hardware
  • Using the stack to copy memory blocksA [b]PUSH[/b] and a [b]POP[/b] instruction together take less time than two [b]LDI[/b], so long [b]POP/PUSH[/b] sequences are sometimes used to copy …

    ... , this requires several kilobytes of memory - it would be much less ...
    ajmoss ajmoss August 2010 Development
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Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    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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    harriusherbartio on April 21
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    AndyC on April 21
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