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<1…11121314151617…34>
  • problems using GOG.comI've been watching a bunch of HOMM III clips on YouTube recently and decided I fancied playing it again. I've still got my original game & patch disk…

    ... checked if there were any problems running on WinXP, which there ...
    Battle Bunny Battle Bunny May 2014 Chit chat
  • Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…

    ... 've been investigating contended memory timings on the Timex Sinclair ... Timex SCLD still applies memory contention at these locations ... 4000 - $7FFF making a memory access at each location during ... in port F4 when applying memory contention; contention is applied ...
    rga24 rga24 May 2014 Hardware
  • Read Data from memoryHi there. Not been on this scene for a long time. Does anyone know how to do a routine to read data from memory(peek..etc) rather than using lines of…

    ... routine to read data from memory(peek..etc) rather than using ...
    davepierce07 davepierce07 May 2014 Sinclair Basic
  • HDMI generation by cloning video ram(coming from [url]http://www.worldofspectrum.org/forums/showthread.php?p=768257&posted=1#post768257[/url]). A thing I was brainstorming about.. Why …

    ... FPGA/microcontroller with some separate memory to build a HDMI signal ... video ram reading and contention problems.
    Simply a transparant innovative ...
    bverstee bverstee May 2014 Hardware
  • Anyone can help with hacking TwisterI believe I have found a truly unhackable game. Twister The mother of Charlotte.... It's the decryptor starting at 65068 I'm having problems with. …

    ... at 65068 I'm having problems with. How it works is ... takes the address from screen memory and stores the byte from ... around altering bytes arbitrarily in memory, so therefore needs the unaltered ...
    nuggetreggae nuggetreggae June 2014 Development
  • displaying all memory activity in a screenDunno why I keep thinking about this, but here goes Is it easy enough to add a screen to an emulator that shows every memory address' activity.... …

    ... an emulator that shows every memory address' activity....

    Im ... the activity on the dispkay memory?

    Does all that ... of every bit in speccy memory
    Thst leaves plenty of ...
    bleugh bleugh June 2014 Emulators
  • Great to be back....and with fun to comeHi all, 1982: I bought a new 16k issue 2 in 1982, eventually got microdrives and a dktronics keyboard (version 1). Built a home made eprom programme…

    ... ++ skills to test via the z88dk C compiler. All this not ... will be the original IC). Memory etc will be single chip ...
    IanJ IanJ August 2014 Announcements
  • Double Buffer UtilityHi Folks, I've been experimenting with double buffering on a 48k Speccy for a small project I'm working on. After reading lots of good advice here…

    ... so if you spot any problems please let me know or ... to relevant place in screen memory
    screenX = min(16,self ... the registers to populate screen memory
    numRegs = min(numRegs,8 ...
    KrazyKattapilla KrazyKattapilla August 2014 Development
  • ZX-Assembler file handling concept[QUOTE=clausjahn;777075]Dear readers, At this time, it's a good time to ask you, the future users, how to implement the file usage. Let's suggest so…

    ... well as RAMTOP address, the memory data can be split-down ... be theoretically be done without problems, as a shorter compiled result ... the case 2 and 3 problems.[/QUOTE]

    Has someone ...
    clausjahn clausjahn August 2014 Emulators
  • Better arrangement for video memory?While doing some documentation work for the ZX-Uno project, I compared the advantages of the weird layout of the ZX Spectrum against a linear layout.…

    ... of character in video memory
    ld b ... Y0

    Memory address (ZX Spectrum arrangement)

    Memory address (C64 arrangement)
    ... byte of the display memory address, we increment ... high byte of the video memory address)

    mcleod_ideafix mcleod_ideafix September 2014 Development
  • Android memory questionErm, I was sure there was already a thread about this before but I couldn't find it, perhaps it's deleted or something. So I'm asking this again. I …

    ... ), but it fills up its memory pretty fast (and gets real ... the SD card help reduce memory usage?

    Thanks in ...
    Timmy Timmy September 2014 Chit chat
  • PlusDlite v2014.1 - problems with floppy power supplyI received a small batch of boards of the new PlusDlite design, which is similar to the original PlusD, with GAL etc. The main differences with the o…

    ... .

    But...
    The problems are still there, but ONLY ... : the main cause of the problems lies in the use of ... bit for similar (voltage level?) problems with two power supplies, but ...
    bverstee bverstee September 2014 Hardware
  • ZX-Blockeditor 2.3.1 publishedDear readers, just want to tell you that there's an update on ZX-Blockeditor: version 2.3.1. I made the following updates: 1. Ralf reported some p…

    ... reported some problems about the visibility of selections in the memory editor ... wrong byte cells of the memory editor were selected when the ...
    clausjahn clausjahn September 2014 Emulators
  • JHCon 2014Hello, not sure if this is the right category but JHCon 2014 will take place[B] from 28. to 30.11.[/B] at usual place - gymnasium in Jindrichuv Hrad…

    ... ]

    (if you have problems accessing the website, here's ... normal 48 BASIC and 48K memory
    --- your demo part can ...
    Factor6 Factor6 October 2014 Announcements
  • New Game:Actually it's a reconstruction of my old BASIC game written back in 1998. It was my personal MIA :) Fortunately i've found old paper sheets with spri…

    ... />
    Also i'm use z88dk + sp1 for speed up, since ... here! Unfortunately there is a problems with yours gravity module.
    DenisGrachev DenisGrachev October 2014 Brand new software
  • Issue 3 ULA ProblemsI've been given an Issue 3 48k to fix. It was producing no video and no picture on the TV. The coil was buzzing so it was getting power and all the v…

    ... , sound and program loading works. Memory test shows no bad IC ...
    retrogamemart retrogamemart November 2014 Hardware
  • 48K Upper memory issues?Having more issues with the 48K spectrum I just fixed that had the black screen in this thread [URL="http://www.worldofspectrum.org/forums/showthread…

    ... end.

    Ran the memory test
    PRINT PEEK 23732 ...
    whoremoan whoremoan November 2014 Hardware
  • AGD memoryHow low has anyone got AGD memory showing but still works without crashing or errors. My Monty game is showing 30 and will not allow you to open any…

    How low has anyone got AGD memory showing but still works without crashing or errors.

    My Monty game is showing 30 and will not allow you to open any events to edit. If I add just one letter to any text it crashes big time, full reset.
    Dazman Dazman November 2014 Chit chat
  • New Game: Escape from Colony 8[I]I can't really tell what happened, when they first attacked our base or where they came from, but Colony 8 is lost. My only chance is to get to ha…

    ... maps are quite expensive. Also Z88DK + SP1 don't help much ... basically: I run out of memory and I had to cut ...
    reidrac reidrac November 2014 Brand new software
  • Spectrum +2a memoryHi all, Happy New Year. A quick question, I have a Spectrum +2a that I am seeing a very intermittent fault, once every 20 - 30 power ups. I plug…

    ... to fail the lower 16K memory test.

    Does anyone ...
    bagpuss22 bagpuss22 January 2015 Hardware
  • ZX Evolution -- contended memory and raster emulationFresh bleeding update for [url=http://www.nedopc.com/zxevo/zxevo_eng.php]ZX Evolution[/url] [url=https://code.google.com/p/pentevo/source/list]Baseco…

    ... -- raster and ULA contended memory emulation for original 48k and ... />
    1. Contened memory is emulated as described here ... some help with raster/contended memory

    Mike & ... valuable insight into contended memory topic and useful discussions.< ...
    lvd lvd January 2015 Hardware
  • Floating Point Package Math48<br>I came across a neat little floating point package for the z80 and I'm adapting it now to work with z88dk and sdcc.&nbsp; There is an interesting…

    ... :

    http://z88dk.cvs.sourceforge.net/viewvc/z88dk/z88dk/libsrc/_DEVELOPMENT/math ... math functions (http://z88dk.cvs.sourceforge.net/viewvc/z88dk/z88dk/libsrc/_DEVELOPMENT/math ... a floating point accumulator in memory and keeps another operand in ...
    Alcoholics Anonymous Alcoholics Anonymous May 2015 Development
  • Back into the scene and having problems !Hi Guys,<br><br>After a few years away from the retro scene, I'm back with an Atari 800XL, A C64 and - best of all arrived today, a lovely little 48K…

    ... sound card and having some problems.
    Tried TZX and Tap ...
    daznic daznic June 2015 Hardware
  • Contended memory and TritoneQuick question regarding contended memory...<div style="font-style: normal;"><br></div><div style="font-style: normal;">I'm testing ideas with Triton…

    Quick question regarding contended memory...
    I'm testing ideas ... the player code after 0x7fff memory address and the data in ... contended memory, and it doesn't seem ... being run from non contented memory, so I think it actually ...
    reidrac reidrac June 2015 Development
  • Memory testersHi, Just wondering which software people are using to test the memory in their spectrum. I have been using Zorn's memory tester as described here:…

    ... are using to test the memory in their spectrum. I have ... been using Zorn's memory tester as described here:
    vext01 vext01 July 2015 Sinclair Miscellaneous
  • External Z80 CPUHi Looking for some advice if possible. Many years ago I had a plug-in board for a Spectrum 48k which had a couple of switches, a z80 CPU, and a S…

    ... (maybe another chip, but my memory is hazy). You could plug ... , but I'm really having problems with the CPU. Can anyone ...
    Graham Graham August 2015 Hardware
  • Calling in some help?Hi guys. As you may know, I released the 'non beta' of the Vulcan expansion pack. OK so it ended up having a single minor, easily fixable bug. But…

    ... is, I programmed 120,000 memory addresses for it. Yes. 120 ... understand a full 15,000 memory addresses of the programme, and ... headaches. I worked on the problems all day today and got ... own website, eventually. The current problems are that supplies won't ...
    Daniel_Baines Daniel_Baines August 2015 Development
  • [NEW] Retro Virtual Machine v1.0.0 for OSX released!!!!Here it is! Retro Virtual Machine v1.0.0 RELEASED!!!! Many thanks first to Patrik Rak for the PZX format and for their Z80 tests without which RVM…

    ... ’
    Emulation of the contended memory timings.
    Pixel to pixel ... to 1 mapping to avoid problems with the different regional configurations ...
    jcgamestoy jcgamestoy September 2015 Emulators
  • 48k Memory MapIs there a link or info anywhere that explains the 48k memory layout? My game uses double buffering and I'm trying to decide where the best memor…

    Is there a link or info anywhere that explains the 48k memory layout?

    My game uses double buffering and I'm trying to decide where the best memory location should be.
    Atari_Jetman Atari_Jetman September 2015 Development
  • Sinclair QL bad memoryI googled around trying to see if there was a resource for this but didn't really find anything specific. I have a QL with the white screen proble…

    ... screen problem which indicates bad memory, so I plopped a Minerva ... you addresses of the bad memory...Problem is that doesn't ... help me identify which IC memory chip it is. Is there ... " a good chip on each memory chip but the only result ...
    beanz beanz September 2015 Hardware
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