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<1…11121314151617…34>
  • yie ar 128k on a real spectrumIs there any way to play yie ar 128k on a real spectrum. whenever i create a wav with k7zx it crashes after level 1. Also if i create a tzx with z80…

    ... at 23296! 23388 has the value 106. 23611 is at 255 ... there was unused space in RAM... And I left it as ...
    nuggetreggae nuggetreggae January 2010 Games
  • 48k spectrum restarts by itselfFirst of all hello from a newb and thank you for your help. This site has already offered me a lot of insight. I have a 48k spectrum that will boot …

    ... check if spectrum detect all ram. Write

    PRINT PEEK ... 23733 * 256

    The value printed should be 65535
    Jose_Leandro Jose_Leandro January 2010 Hardware
  • Converting games from tap to dskHi to all from Greece, Being an old Speccy user and now owner of most models of Spectrum (48k , 48k+ , 128K, +2 grey and +3) , I desided to salvage m…

    ... roms - Interrupts are enabled while ram paging is happening - so every ... at the bank value at 23388 and sets the ram page - so ... it's probably setting ram page back to 16 halfway ...
    nuggetreggae nuggetreggae January 2010 Emulators
  • Please test my Manic Miner remake!Thanks to everyone who downloaded my sneak preview of Manic Miner Turbo. Thanks especially to na_th_an who is the only person so far to give feedback…

    ... back buffer in non-contended RAM and add dirty cell addresses ... a, (de) ; get the attribute value
    ld c, a
    Paradigm Shifter Paradigm Shifter February 2010 Games
  • Problem with Spin 0.7s +3 file I/OI'm currently trying the +3 disk functions in z88dk. I've based my work upon the simple snippet Winston posted a while ago, but doing the contrary. H…

    ... normal mode. If you want RAM in the bottom 16k you ... date with this value. The FAQ also mentions this "RAM banks 1 ... require a whole lot of RAM but I'm sure that ...
    Alcoholics Anonymous Alcoholics Anonymous March 2010 Emulators
  • Someone can help me to fix my Zx Spectrum?I did a video about the startup: [url]http://dl.dropbox.com/u/1566495/ZXSPECTRUM03.mp4[/url] I have replaced the ULA with a working one (same proble…

    ... even if there were no RAM memoy at all, the ROM ... , the border color is whatever value were stored in the ULA ... the working condition of the RAM chips, but also the ROM ...
    mcleod_ideafix mcleod_ideafix March 2010 Hardware
  • ZX 81 Collection on ebayHi guys. Just to let you know I have decided to sell my ZX81 collection. I'm just sticking with the speccy from now on so the ZX-81 is going this we…

    ... the Filesixty Keyboard and Memopak RAM up on their own if ... hopefully buyers will see their value and bid accordingly (well, you ...
    ZX81Museum ZX81Museum March 2010 Sales
  • ZX 81 Collection on ebayHi guys. Just to let you know I have decided to sell my ZX81 collection. I'm just sticking with the speccy from now on so the ZX-81 is going this we…

    ... the Filesixty Keyboard and Memopak RAM up on their own if ... hopefully buyers will see their value and bid accordingly (well, you ... mint boxed with instructions Memopak Ram around here somewhere I will ...
    ZX Beccy ZX Beccy March 2010 Sales
  • Be honest now...When you got your (first) Spectrum, was it the computer you wanted? And don't worry, this poll is anonymous, so your secret is safe, even if you're …

    ... a few QLs, representing a value of a years "Politbuero"- salary ... , upgraded it to 4 meg RAM and with a "CF-IDE ...
    Mad Fritz Mad Fritz March 2010 Sinclair Miscellaneous
  • 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 …

    ...

    I got the value 246 at address 4515 in ... , I ALWAYS disable while switching ram banks / rom banks for the ... . If in USR0 mode the ram page var at 23388 does ... then the ram page will be changed to the value contained in ...
    nuggetreggae nuggetreggae April 2010 Hardware
  • Tricks with IN 31It's generally considered unwise to use a Kempston joystick's fire button to start a game, because the floating bus effect can make arbitrary data ap…

    ... ]

    Yes, but this value is stable only on ZX ... more interfaces then value of floating bus can be unstable !!!

    value than 0 then joystick support ...
    velesoft velesoft April 2010 Hardware
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... in 48kB mode in SAM ram (run about 20% faster ... But is possible manually change value of basic variale "SLOW=1 ... 1MB memory (if default value of port 7FFD in SNA ... #10-#17. If contain value 0-7 then all pages ... must be always set to value 0 !!!

    All ...
    velesoft velesoft May 2010 Games
  • converting ZX128 software for SAM COUPESAM COUPE is computer compatible with ZX48 model. Use same ports, same keyboard with compatible membrane, 64kB adress space with possibility connect …

    ... interrupt in screen area. Default value is 0 = interrupt will on ... can be started in SAM ram (don't need 1MB memory ...
    velesoft velesoft May 2010 Games
  • 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 …

    ... simple effects has possibility of unstable sound glitches because of pause ... two OUT's for pitch value. If interrupt occurs between them ...
    Shiru Shiru May 2010 Sinclair Basic
  • DivIDE and joystick interfaceWhich joystick interface works with the DivIDE and ZX 48K? I have TurboRAM but it works not correct or blocks DivIDE. Multiface One works with the j…

    ... adress lines in log.0 value. Other adress lines are ignored ... this adress lines in same value = same port).

    Result ... and data bus will very unstable - to port 23 is writed ...
    velesoft velesoft May 2010 Hardware
  • +3 how to detect if a file exist ?Need help. I am making a generic menu to my compilations over the spectrum +3. Exist some way programatically to detect if some file exists on the d…

    ... LD (23387),A ;set last value outputted
    48914 OUT ... /> 48941 PUSH BC ;store return value

    48942 LD ... Ram page 0)
    48952 LD (23387),A ;set last value ... BC ;Set back our return value from the stack.
    ...
    spodula spodula May 2010 Sinclair Basic
  • Arrays in asm ?Just following the idea to make the menu entirely in asm, how can i handle arrays in asm to store the each game loader to be loaded ? thx in advance

    On the subject of RAM, all it is is an ... example - the first 16 bit value is a pointer to the ...
    Winston Winston June 2010 Sinclair Basic
  • LDIR timings in contended RAM?The 48K Spectrum technical reference page ([URL="http://www.worldofspectrum.org/faq/reference/48kreference.htm"]here[/URL]) describes the detailed ti…

    ... the detailed timings of contended RAM. It gives timings for Z80 ... in, or reading/writing, contended RAM.[/quote]

    You'd ... apply contention based on the value of DE, run for 1 ... tstate, apply contention for the value of DE, run for 1 ...
    Philip Kendall Philip Kendall June 2010 Development
  • DivIDE with gray +2 LOAD not workingI have 128+2 gray. It has faulty upper memory. PEEK 23733 shows 191. I wanted to use divIDE to load some test programs, but it always hangs when exec…

    ... reads 5v or 0v, its value is not changing, in other ... a programmable trap somewhere in RAM, copy some code there, then ... working. If the code in RAM continues to run as if ...
    Winston Winston July 2010 Hardware
  • BITWISE operators...Hi Folks, Another question - is there a way (fast) to do bitwise operations in Sinclair BASIC? Many thanks Paddy

    ... to fit in 16K of RAM and that there are a ... easily enough.
    [code]IF value=foo THEN GO TO case1 ... the line number as a value.
    [code]LET MovePlayer=1000 ...
    chev chev August 2010 Sinclair Basic
  • updated Fatware - keyboard patchHi! I work with Fatware code and already prepare keyboard patch for original version 0.12. Now it's possible to operate disk browser with keys: 1) c…

    ... of DEVASTACE (LDIR from divide ram page 1 to adress 16384 ...
    0-255 = write this value to actual adress
    SS ... -255=number, ENTER=ignore/any value)
    N = find next
    - write value "201" + ENTER
    velesoft velesoft September 2010 Development
  • Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…

    ... the save routine. Whatever the value of the IX register is ... shows that IX contains the value 03D4h (980d). This is near ... into the screen area of RAM and beyond. Finishing at address ...
    BloodBaz BloodBaz September 2010 Sinclair Basic
  • Pretty CrashesTo make a 48K spectrum crash spectacularly and beautifully enter the following into basic. Also works on a 128k in 48k mode though not quite as prett…

    ... the save routine. Whatever the value of the IX register is ... shows that IX contains the value 03D4h (980d). This is near ... into the screen area of RAM and beyond. Finishing at address ... it with a higher starting value. I did this to see ...
    Scottie_uk Scottie_uk September 2010 Sinclair Basic
  • The Sadness of my Decaying Speccies.I've been avidly collecting ZX Spectrums since the late 90's and whilst at the time of the late 90's and early millennium my Spectrums and associated…

    ... , to be problems with lower RAM.

    To amplify why ... edge connector, thus killing lower RAM and usually the switch mode ... well - the Speccy was fantastic value for money and it wasn ...
    Winston Winston September 2010 Sinclair Miscellaneous
  • DIVIDE games crashingMy DIVIDE arrived today complete with 512K CF Card, ready to go. First impressions, really good - simple file browser works fine & games load no prob…

    ... why... This OUT command write value #7F,#7E or #00 to ... with black screen and switch ram to 48kB mode...

    velesoft velesoft October 2010 Hardware
  • DIVIDE games crashingMy DIVIDE arrived today complete with 512K CF Card, ready to go. First impressions, really good - simple file browser works fine & games load no prob…

    ... why... This OUT command write value #7F,#7E or #00 to ... with black screen and switch ram to 48kB mode...

    daznic daznic October 2010 Hardware
  • Spectrum 128K RS232 to PC serial cableIf you have read some of my recent posts then you will know that I am eager to link my Spectrum +3 to a PC. This will be done by wiring a standard PC…

    ... /> ; *MUST EXECUTE IN NON-CONTENDED RAM*

    ld hl,16384 ... T-states to a specific value thus there would normally be ...
    ASM ASM October 2010 Hardware
  • .POK collection?Greetings, everyone! I enjoy pokes for Spectrum games, but sometimes before playing a game I need to couple through the-tipshop.co.uk to find the pok…

    ... />
    8 is number of RAM page. Put 8 if you ... last zero is the initial value, which helps you undo the ...
    Lady Eklipse Lady Eklipse October 2010 Games
  • Do ULAs die?Thought I'd start this thread as people often think their ULA is dead, when it's actually the RAM or power circuits. Searching the forum in the futur…

    ... people have said ULA, others RAM, me I haven't got ... would say that RAM was alternating between the value 20h (00100000b) and ...
    ASM ASM October 2010 Hardware
<1…11121314151617…34>

Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
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unstable 444 481
ram 12.6K 21.4K

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