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<1…12131415161718…34>
  • Childhood moments with my SpeccyHey everyone. The other day I randomly came across a tumblr page called "Me and My ZX Spectrum" ([url]http://meandmyzxspectrum.tumblr.com[/url]) …

    ... I enjoy seeing people write incredibly clever pieces of code ... .


    Memory fragment #1
    My good ... I scanned the whole UHF range back and forth, again ... a BATTERING RAM to break the main door! So ... staring at the message on the screen that read: ...
    memrah memrah July 2013 Sinclair Miscellaneous
  • Contended memory article on WikipediaYeah, apparently there's one. https://en.m.wikipedia.org/wiki/ZX_Spectrum_Contended_Memory [quote] However, the ULA must wait for a Z80 read or wr…

    ... a Z80 read or write to complete before it ... it relies upon the memory being available to read to ... the correct video pixels. On the next frame, they ... a flickering of missing pixels on the display, or 'snow ... data to the display on interrupt, as the Spectrum ...
    Hikaru Hikaru December 2016 Sinclair Miscellaneous
  • Project: M.u.l.e.Wokani came up with a great idea about trying an open-development approach for spectrum games, and I thought why not try with a game I have under dev…

    ... lot easier to write the game ... mountain definition for mountains on land plots
    ... globals at specific memory locations once we ... extern uint u_rnd(uint range); // return random ... < *(dist++))
    break;

    return ...
    Alcoholics Anonymous Alcoholics Anonymous July 2007 Development
  • IF2 Rom snapshot creationHi, is it possible convert a Speccy 16k snapshot to a Interface 2 Rom file? I've the original Ultimate Pssst, Cookie, Trans-am and Jetpac tapes and …

    ... allows you to break when PC enters a specified range but you ... Marko. That has been spot on. Much more than I expected ...
    BloodBaz BloodBaz April 2008 Emulators
  • The Programmers Development System (PDS)Hi everybody, I recall this system has been mentioned several times on WoS forums. Last time was, I think, when those sources from Maz Spork (Buggy …

    ... mistake by not improving their range of computers enough allowing Sony ... code, setting break points and uploading/downloading chunks of memory at high ... 2 or 4 megabytes of memory on the Psy-Q could run ... you wish to read/write and then read/write the data one ...
    ASM ASM October 2010 Sinclair Miscellaneous
  • Performance Analyser?Disclaimer: Im asking this question as a "non-programmer" so please forgive my ignorance if this turns out to be a daft question. During the life-sp…

    ... br />
    Software breakpoints
    On a PC I can call ... modifying code are common on Speccy which makes this ...
    Memory access breakpoints
    Break when a certain range of memory is read ... commands
    Ability to write to a hardware register that ...
    evilpaul evilpaul August 2012 Development
  • disk write protect on Spin ?Is there an option for Spin to default a (loaded) disk to be write protect ? I whish I have no worry when loading a perfect original disk to convert …

    ... a (loaded) disk to be write protect ?
    I whish I ... Message was edited by: secarica on 2002-10-02 17:21 ]
    secarica secarica October 2002 Emulators
  • ANNOUNCE: SPECSAISIE 1.2 released!SPECSAISIE is a Java system which enables one to perform surgery on SNA and TAP files, and various other gubbins (some functions relate to Spectrum e…

    ... loading the Spectrum files on the tape into memory.
    + SNAtoTAP: ... Spectrum files onto tape from memory.
    - TAPtoBinary: Convert a ... address or a range of addresses.
    + Poke: Write a byte- ... value is for the second memory.
    - Saisie: Generate ...
    andrewbroad andrewbroad January 2003 Emulators
  • ANNOUNCE: SPECSAISIE 1.2 released!SPECSAISIE is a Java system which enables one to perform surgery on SNA and TAP files, and various other gubbins (some functions relate to Spectrum e…

    ... loading the Spectrum files on the tape into memory.
    + SNAtoTAP: ... Spectrum files onto tape from memory.
    - TAPtoBinary: Convert a ... address or a range of addresses.
    + Poke: Write a byte- ... value is for the second memory.
    - Saisie: Generate ...
    andrewbroad andrewbroad January 2003 Games
  • BASin Release 6 available for DownloadHi all - It's another cut'n'paste from CSS :) I've been tapping away again, and seeing as a couple of people have recently seen BASin's latest bits…

    ... many games on it. You *can*, however:

    Write BASIC ... Added Undo and the Forced BREAK options. Undo will undo the ... program code change. The Force BREAK is similar, but available ... faster than an expression) and memory location bytes, words and DWords ...
    Dunny Dunny June 2003 Emulators
  • Does Screen Flipping work on a 48k Spectrum?On the other post it showed some basic code to flip the screen on a +3. Does it work on a 48k Spectrum. Can anyone show me the machine code to: Se…

    On the other post it showed ... code to flip the screen on a +3.

    Does ... it work on a 48k Spectrum.

    Set the screen memory to default 16384
    Write to backbuffer 49152 ...
    robpearmain robpearmain May 2004 Development
  • Pentagon interface news from VELESOFTIt's from Xagon's board. It is about new interface for Speccy - it make Your comp compatible with Pentagon (and not only) and also it gives You up t…

    ... version expands the ZXS 128 memory to 512kB,
    ...
    - Pentagon 512kB mode (all memory is fast)
    Higher RAM ... user manually sets working range of work memory.
    MFC is ... memory and swith on TRDOS.
    DivIDE could map TRDOS. Someone could write ...
    Yerz Yerz June 2004 Sinclair Miscellaneous
  • TommyGun - Utility ... what's going on...For those interested, Tony has been busy lately and unable to put as much time into TG as he'd like. He also has a child on the way soon. He told me…

    ... development application as time went on.

    TommyGun ... will contain Editors for coding, memory, sounds, actions, scripts, etc. ... rewritten program that works based on plugins. So, TommyGun will ... someone is willing to write the plugins for it.
    Sadako Sadako July 2004 Development
  • Smooth Masked Sprites using fast page flip on 48k Part 2Ok, After all the suggestions in Part 1, which were all excellent (Thankyou), I opted on the following: I have 2 x 6k Offscreen areas (Yes, that's …

    ... with attributes, and write these when char is ... 256 BYTES FORWARD IN MEMORY TO FB0AH
    ... SCREEN

    ; ON ENTRY:
    ; HL CONTAINS ... DE CONTAINS CHAR ADDRESS
    ; ON EXIT:
    ; DE CONTAINS ...
    robpearmain robpearmain September 2004 Development
  • Fastest way to write something to screen$Hi, I just got pasmo.exe and start playing with attr scrolling, well, not scrolling, just write different values to a block and see if I can introdu…

    ... scrolling, well, not scrolling, just write different values to a block ... know that the timmings are on the net and I'll ... to fill a block of memory with 1 value ?

    on 2005-04-26 01:22 ]
    AE.Vasconcelos AE.Vasconcelos April 2005 Development
  • 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…

    ... has been bettered several times on other machines, for example ... as the Windows version runs on far faster hardware, with access ... much larger storage area and memory, but nonetheless Psion Scrabble wouldn ... the programmers were forced to write to a very limted ...
    ewgf ewgf October 2005 Games
  • 128K memory testingDuring a mad half hour I decided to write a little memory tester program in BASIC using the information from the 48K service manual. Now I was wonder…

    ... hour I decided to write a little memory tester program in BASIC ... way of testing the ram on a 128K speccy.

    BruceNorton BruceNorton October 2006 Sinclair Basic
  • Testing the Ram on a Toastrack 128KHi All My "new" 128K is misbehaving, all the demos I have loaded for it crash instantly, Ghostbusters 128K is playable but one of the background scr…

    ... memory, is there an app that will run a read/write test on ... come up blank. I could write one but I have no ...
    Womble Womble October 2007 Hardware
  • RESIDOS and WRITE PROTECT IDE DEVICEI use DIVIDE interface with SD2IDE adapter + SD card. This adapter work with SD card in TRUE IDE mode. All work correct, only if on SD medium is set …

    ... on SD medium is set lock then memory card is read only (write ... writeprotect mode incorrect, can't write to medium and print bad ...
    velesoft velesoft April 2008 Development
  • Alternative ROM on original DivIDEOriginal DivIDE interface contain too allram mode (16kB paging). [url]http://raww.org/index.php?name=News&file=article&sid=2471[/url] Switch to ALLR…

    ... ) remove switch JP2 on DivIDE interface
    2) write value 66 to ... port 227

    16kB memory paging ... ,1 = set page 1 with write protect


    Alternative ... memory)
    LD A,0
    OUT (227),A ;page 0 + write ...
    velesoft velesoft June 2008 Hardware
  • VIC 20 emulation on the SpectrumI'm sure most people are aware of the my attempt at bringing the full Commodore experience to Sinclair users with the "Twenty Commodes" program. It e…

    ... program takes 197 seconds on the current version of ... emulator courtesy of Simon Owen (on WoS as 'obo'). His ... the 6502 read-modify-write instructions better than 20 ... addr is in the screen memory area.)

    ... is a VIC 20 page on his website [URL="http ...
    Jimmy Jimmy August 2008 Sinclair Miscellaneous
  • FLASH EPROM programming on ZXExist any other software for rewriting FLASH EPROM or EEPROM chips on real ZX ? I know only: EEPROM flasher for original DivIDE [url]http://85.132.…

    ... FLASH EPROM or EEPROM chips on real ZX ?

    ...
    ld (hl), a ; write byte to target adress(eeprom ... Yarek's flash utility (based on Putnik's version)
    [url ... ]http://velesoft.speccy.cz/flash-memory.zip[/url]

    ...
    velesoft velesoft July 2009 Hardware
  • Cartridges vs. Discs vs. Digital downloadFollowing a discussion in another thread, I thought a poll about cratridge vs. disc vs. digital download might be interesting (well, compared to the …

    ... make are big enough to break the download limits your ... die, but cartridges are nigh on indestructible, (reasonably speaking, obviously ... actually "loading", it's memory allocation and data setup (admittedly ... town, but I stayed to write this damn report, which ...
    ewgf ewgf September 2009 Chit chat
  • Tutorial - learn machine code in 30mins[B][I]Message from the moderators[/I] - bigjon has requested that readers' attention be drawn to a better version of this tutorial, one which is easi…

    ... Spin assembler to write a few bytes into the memory generating a ... score for our game.
    - write a ... />
    CHAPTER 2 - Display material on the screen.
    There are ... this range to see the funny order in which this memory area ...
    bigjon bigjon November 2009 Development
  • 128kB software with incorrect memory pagingI search all ZX software using incorrect memory paging via OUT (253),A. This software must write to port data value with D6=1 for compatibility with …

    ... incorrect memory paging via OUT (253),A. This software must write to ... D6,D7 and D5 on port #7FFD (unused on original ZX128 models ... original ZX software will use on this computers different memory pages.
    velesoft velesoft March 2010 Games
<1…12131415161718…34>

Latest Posts

  • European Software Titles with an English version
    harriusherbartio on 12:06PM
  • How Do You Categorize Your Speccy Software and Games?
    harriusherbartio on 11:21AM
  • Fixed Speccy Software. And which games remained unfixed?
    harriusherbartio on 11:01AM
  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
  • Another Birthday! The Game Boy Is 35!
    mel the bell on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
    harriusherbartio on April 21
  • 1992 Spectrum Software
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  • +3 Disk drive motor
    AndyC on April 21

HitBox

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break 6.7K 7.9K
on 353.1K 619.7K
memory 21.8K 32.5K
range 4.6K 5.7K
write 16.1K 20.3K

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