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  • FZX: a new standard format and driver for proportional fonts[B]FZX[/B] is a very compact and efficient (although extremely flexible and powerful) standard format to create new fonts for the ZX-Spectrum. It sup…

    ... font data as functions (ie z80 code, as in "extern ... the correct "LIB _ff_Ariebth14" reference instead of the incorrect "XREF ... the standard fonts as defined by Andrew and Einar. I ... as of now (one by utz and one from ... from disk or network by a well-known filename ...
    Alcoholics Anonymous Alcoholics Anonymous December 2013 Brand new software
  • Problem with Pasmo Assembler/Speccy emulator?I'm at the start of trying to learn Z80 assembly for the ZX Spectrum. I'm using Speccy 1.7 as my emulator, Pasmo as my assembler, and am following t…

    ... start of trying to learn Z80 assembly for the ZX Spectrum ... [/img]

    For further reference, i suggest you either download ... (HTML), which is in chapter by chapter form, is here: [url ... program faster this way, than by typing each keyword
    letter ...
    The_Bert The_Bert December 2013 Development
  • Canonical Spectrum pixel aspect ratioHi, Do any emulators support scaling the Spectrum image to have the "correct/canonical" pixel aspect ratio? On a 4:3 display, Spectrum pixels aren'…

    ... /> This seems like a good reference image:
    ...
    (from ... the picture horizontally by 1.035%![/QUOTE]
    That reference image is ... size of about 1349 pixels by 960 vertical. With filtering ... /video-systems/]Programmer's Guide to Video Systems[/url].
    mark_k mark_k January 2014 Emulators
  • Idiots Guide......To machine code, or assembler language...whatever the appropriate term is Basically at this stage I want to fiddle about and try and get used to…

    ... would give you a side by side coding, ie. say ... many years ago. The classic reference for C is Kernighan & ... become an invaluable reference source for anyone programming in Z80 assembler on ... beginners is "Understanding Your Spectrum" by the same Dr Ian Logan ...
    Battle Bunny Battle Bunny January 2014 Development
  • Is ESXDOS flexible enough to incorporate e.g. Spectranet commands?I was just discussing the idea with someone about the wish some people have to be able to combine interfaces such as DivIDE (Plus) / DivMMC EnJOY! wi…

    ... spectrum community and into the z80 community, if he is ... it out of subversion by pointing your svn client ... writing general code for the Z80 + W5100 most of the ... the Spectrum but a Z80 based single board computer ... memory addresses since my Z80 SBC had all of ...
    Winston Winston February 2014 Hardware
  • How did you learn to code on the Spectrum?Got to be honest, as much as I wish I did, I don't know anything about programming. I had a Spectrum (+2 and then +2B) when I was a kid, and my prog…

    ... a RAM pack, and by then I was already ... forgot the joys of the Z80, and recently writing a ... to mention made possible by previous work from others on ... someone to an "easy" guide called Mastering Machine Code on ... neutrons in Chemistry, and by the time I finally got ...
    RobeeeJay RobeeeJay March 2014 Development
  • Why is the scene less participative now? or at least, a bit hollow...I have found out in the last months, that despite of having a huge number of new games with a huge quality, a great number of hardware projects, and …

    ... out machine code without a reference or an assembler. The opcodes ... programs. My interest was rekindled by one of those pirate DVDs ... HMV in the 1990s, the Z80 emulator and (later) the Spectrum ... the resources, I've learned Z80 machine code properly for the ...
    mcphail mcphail June 2014 Sinclair Miscellaneous
  • z80 commands timeshi! I need site with z80 commands mashine times. I remember, I saw one as table, maybe in .cc domain, but pity forgot link. for example LDI take 16 …

    ... many tstate an instruction needs by calculating, not memorizing. Not to ... of countless hours of work, by the unknown heroes of zx ... :

    [url]http://www.z80.info/z80code.txt[/url][/QUOTE ... the one I use for reference and timings. Printed out and ...
    MatGubbins MatGubbins July 2014 Development
  • Ben Heck modifies a Zee X Spectrum.Gahh, one of the differences between Americans and Europeans right there in the title. Anyway, we know better ;) ...and this isn't about that anyway.…

    ... BASIC for Z80-based machines. It was all done by Nine Tiles ... in the ZX Spectrum+ User Guide.
    rich_chandler rich_chandler August 2014 Hardware
  • Speccy Vs Amstrad CPC Vs C64I hope no one minds me posting this here as well as in the announcements section. I'll delete it if there is a problem. It's childish fun but can I …

    ... too serious.

    In reference to the C64 Ultimate games ... .

    The C64 games by Ultimate revolved around a different ... in home computers moreso than Alan Sugar (the Amstrade CPC while ...
    dmsmith dmsmith January 2015 Games
  • 1985-2015.A topic where we can review games released on the Speccy 30 years ago, or, anyway, talk about that year.

    ... />
    Subject is inspired by Tapper, gameplay by Travel with Trashman. Somehow ... an Italian fictional hero called Alan Bond ... also involved but the reference passes me by.

    Not a ...
    Jumping Stack Jumping Stack January 2015 Games
  • ZX-Spin assembler commands<p>Is there a list anywhere of the asm commands that the Spin assembler accepts?</p><p>I do plan to move onto pasmo&nbsp;for macros&nbsp;but the spin…

    ... Z80 assembler reference page (of many) is:

    "The Complete Z80 ... OP-Code Reference" by Devin Gardner
    ... http://www.ticalc.org/pub/text/z80 ... ). Multiple values separated by commas can be put ...
    Battle Bunny Battle Bunny June 2015 Development
  • Could ELITE's wireframe graphics be improvedWas watching this video last night comparing the BBC and Spectrum version of Elite: https://www.youtube.com/watch?v=Ov4OAteeGWs It seems that the…

    ... 's the fault of the Z80 CPU that the Speccy couldn ... version has eliminated flicker probably by using a double buffer. Circles ... spectrum's z80, maybe a little bit faster. A rough guide is ...
    Alcoholics Anonymous Alcoholics Anonymous August 2015 Games
  • Game development guidesHello all, I want to get into game development for the ZX Spectrum and would like to know where I can find some helpful guides. I've looked around t…

    ... started.

    Jonathan's guide is probably a good introduction ... chip for music without babysitting by the cpu.

    ... .

    The Zilog Z80 User Manual is the best ... source to understand the z80 architecture for engineers. That ...
    Alcoholics Anonymous Alcoholics Anonymous August 2015 Development
  • z80 assembly helpEver since I was a child I wanted to program my zx81 then my zx spectrum + 2. However, it was such a mystical beast and I only ever used BASIC not kn…

    ... learned more from Jonathan's guide and the responses here than ... and how to program the z80 by Roday Zaks. The way that ... I tend to learn) is by asking questions. The answers to ... from its original start position by editing the main loop to ...
    antonyjones101 antonyjones101 September 2015 Development
  • Recommend-me-do - memory card devicesSo, both myself (with a +3 that has a dodgy drive) and my friend (with a +2) are looking at the various options for loading from memory card. What…

    ... "Quick Reference" box with inks for the "Getting Started Guide" and "Game ... . I subsequently found the guides by searching for the titles on ...
    Graham Graham September 2015 Hardware
  • How did bank switching work on the 128K Spectrums?I'm new to Z80 and ZX Spectrum. So I was wondering how the 128+ models managed to work with more than 64K of memory? I'm somewhat familiar with h…

    ... /> http://www.worldofspectrum.org/faq/reference/128kreference.htm

    You ... ula so a simultaneous access by the z80 slows it down momentarily ... flaw will not be experienced by many but if you're ...
    Alcoholics Anonymous Alcoholics Anonymous October 2015 Hardware
  • A few hardware questions regarding Z80 and eZ80Hi Guys, Maybe some of you could help me with these questions: I would like to know what is the actual file size limit that can be used by z80 …

    ... 100% compatible with legacy Z80 code. I don't ... based off the classic "Z80" core should be compatible ... n-whistles along with a "Z80 type" core. I mean, ... core a Z80? Anyway, what do you mean by file size ... you loose the colorburst reference signal so that you ...
    cbmeeks cbmeeks October 2015 Hardware
  • ZX81 Character SetHello, hope I don't offend anyone with my request. I've put together a program on my Amstrad that redefines a condensed text and displays it appropri…

    ... the ZX81 BASIC Programming Guide and in that Guide seems to be ... zx81's display is generated by the z80 so it is programmable ...
    Alcoholics Anonymous Alcoholics Anonymous December 2015 Sinclair Miscellaneous
  • Internet enabling a SpectrumHi, Yonks ago, I floated the idea of using one of these: http://www.mycal.net/old/wsweb/img/s7600a.pdf ..to Internet enable a Spectrum. I d…

    ... the list of params accepted by the function.

    reference.

    The code ... /z88dk/libsrc/_DEVELOPMENT/string/z80/__string_strtok_p.asm?revision=1. ... The memory maps supplied by z88dk define standard CODE,DATA ...
    Alcoholics Anonymous Alcoholics Anonymous January 2016 Hardware
  • Compression comparisonsI did some comparisons of different compression methods. To make this relevant to zx spectrum, I first gathered a corpus of relevant data: 6660 .TAP …

    ... to the zx spectrum by choosing compressors where Z80 based decompression is ... 7z there just as a reference of what's "potentially" possible ...
    Sol_HSA Sol_HSA January 2016 Development
  • Any noob friendly speccy dev tutorials?I mean, for a person who never used ANY kind of assembly, let alone Z80 one. Would be good if focused on making a game. Additionally, I want your …

    ... , I know absolutely NOTHING about z80 assembly or assembly in general ... in any way an advanced z80 coder, but a mix which ... a step-by-step, used it mainly as a reference)

    ...and the full z80 instruction set for reference. (Just Googled it, there ...
    Morkin Morkin April 2016 Development
  • Any noob friendly speccy dev tutorials?I mean, for a person who never used ANY kind of assembly, let alone Z80 one. Would be good if focused on making a game. Additionally, I want your …

    ... is also the official Zilog Z80 guide which has amazingly recently been ... =bv.119745492,d.d2s"]Zilog Z80 Manual[/url]

    I ... lot from Spectrum Machine Code by Ian Stewart and Robin Jones ...
    jonesypeter jonesypeter April 2016 Development
  • Akalabeth gamei found now that someone ported an ansi-basic game (coded in 1979?) to msx-basic - what about a zx-spectrum basic version of it? ;) https://plus.goo…

    ... whole, by the way, just as individual routines.)

    Reference:
    AppleSoft-II BASIC Programming Reference Manual (©1978 Apple Computer Inc)< ... Computer Inc)
    Programmer's Guide to the Apple-II (©1978 ...
    Battle Bunny Battle Bunny August 2016 Sinclair Basic
  • 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…

    ... while to be re-drawn by game.

    Another possibility ... use maximum memory, for example by using a custom loader, or ... by overwriting the system area with ... I find a good technical reference for Z80 file format ?

    RMartins RMartins October 2016 Hardware
  • I'm writing an Operating SystemOkay this might seem like a bait thread, but I am legitamately interested in figuring out how to write a multi-process system for the ZX Spectrum (no…

    ... a difference to the generated Z80 code.

    [quote ... the high byte would differ by 1, but the low ... byte by 2, and I could ... high byte has now differed by 2, not 1, and ... ]

    Thanks for the reference :-)

    I am " ...
    u6c87 u6c87 October 2016 Development
  • Send in the ClonesPlease name all the Spectrum clones out there ( I would say I need it back on my desk in 5 minutes , but I will be a bit more generous in this case!…

    ... ]

    ZX80 - Designed by Jim Westwood using TTL chips ... ROM.

    NE Z80 - A Brazilian clone of the ... book {ZX Spectrum+ User Guide|Sinclair Research Ltd}.#The ROM ... distinguished from the earlier machine by colour (initially). Rather than ...
    Einar Saukas Einar Saukas March 2017 Hardware
  • ZX Spectrum Next Kickstarter Launchedhttps://www.kickstarter.com/projects/1835143999/zx-spectrum-next

    What makes the Z80 such a successful ... hear) the results achieved by programmers who seem to have ... I'm awe stricken by the abilities of those ... find somewhere an Idiots Guide to how to extract ... accidental or deliberate, the Z80 must have been an outstanding ...
    mik3d3nch mik3d3nch April 2017 Sinclair Miscellaneous
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Latest Posts

  • Minor British Sports that did become games on the ZX Spectrum
    dmsmith on April 22
  • I bought an accoustic guitar. How do you play it?
    Maroc's Other Projection on April 22
  • Goodbye Z80
    moggy on April 22
  • Happy 40th Birthday to the Amstrad CPC464!
    AndyC on April 22
  • Another Birthday! The Game Boy Is 35!
    dm_boozefreek on April 22
  • I am currently watching.....
    Antiriad2097 on April 22
  • European Software Titles with an English version
    harriusherbartio on April 22
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on April 22
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on April 22
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21

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