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<1…17181920212223…34>
  • File comparitorI thought Taper might do it but its not quite what I was after. Unless I misunderstood that shows if tapes are identical or not but not the differenc…

    ... fit into memory. This is the controlling routine; the external GOSUBs refer ...
    Battle Bunny Battle Bunny April 2013 Sinclair Miscellaneous
  • Keyboard scanning routines / techniques?What keyboard scanning routines or techniques do people use? I'm looking to write something which doesn't rely on the ROM-based keyboard scanner, an…

    ... preemption, relocatable executables, slab allocator memory handling (to reduce fragmentation), decoupling ... kernel implementation (to allow different memory mappings to be used without ... debugging, I've implemented an external debugger which takes a snapshot ...
    u6c87 u6c87 May 2013 Development
  • Z80 internal compressionThis isn't exactly a ZX Spectrum problem, but since WOS probably has some of the best Z80 coders in the world, I thought I might ask anyway. For my …

    ... save to any external media (other than dumping the memory to PC ...
    utz utz May 2013 Development
  • Problems using Save"program" Line 10 in real +2A!!I typed a loader for a program and when I use the typical Save"program" line 10, the Spectrum just gives me "0 ok, 0:1" What can it be???? I dont w…

    ... you don't have an external disc drive connected to the ... one touched a part of memory stack, or contained machine code ... active or remained in RAM memory, a NEW instruction shouldn't ...
    Neil Parsons Neil Parsons June 2013 Sinclair Miscellaneous
  • Problems using Save"program" Line 10 in real +2A!!I typed a loader for a program and when I use the typical Save"program" line 10, the Spectrum just gives me "0 ok, 0:1" What can it be???? I dont w…

    ... you don't have an external disc drive connected to the ... one touched a part of memory stack, or contained machine code ... active or remained in RAM memory, a NEW instruction shouldn't ...
    Ivanzx Ivanzx June 2013 Sinclair Miscellaneous
  • Testing a +2I recently picked up a non functioning Spectrum +2 Grey (Issue 3 board?), and am just beginning to go through and see what needs to be done to it. I …

    ... , detach the powerlines from memory and reattach the chips one ... If machine boots, continue with memory testing
    b. If ... capacitors

    3. Check memory function
    a. Use diagnostic ... 's diag cartridge in an external interface)

    So ...
    bverstee bverstee June 2013 Hardware
  • Some thoughs about fast scrolling on 128 modelPlease, consider this article as technically interesting concept not a proven algorithm. ONE The fastest scrollers use long sequence of PUSH inst…

    ... ]
    The jumptable in slow memory will lead to the "snow ... " and may, ultimately, lead to memory corruption. And you cannot use ... be the case when some external hardware is connected.

    introspec introspec June 2013 Development
  • esxDOS v0.8.5 released (with TR-DOS emulator)Yup, you read right! Now with TR-DOS emulation! More info and download here: [url]http://www.esxdos.org/[/url] Enjoy :)

    ... use port #E3 for DIVIDE MEMORY paging (compatible with original divide ... for all other external devices. Also memory acces for external devices will disables ... if DIVIDE memory is connect ...
    velesoft velesoft July 2013 Announcements
  • C.G.D - Classic Game Designer[b]UPDATE: August 07, 2013 AN UPDATED VERSION OF CGD IS NOW AVAILABLE, DETAILS HERE: [url]http://www.worldofspectrum.org/forums/showpost.php?p=7155…

    ... lot easier to use an external, specialized tool to do it ... wouldn't save much but memory is not really a problem ...
    R-Tape R-Tape July 2013 Brand new software
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... FLASH ? This open jumper = disable external divide memory mapping.
    velesoft velesoft August 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    [QUOTE=1024MAK;715858]Ben

    If the ROM on the Speccy is not responding to a 2.7V logic high signal, you could try this little mod.:-

    [CODE]

    ----+--------+--- +5V
    | |
    bverstee bverstee August 2013 Hardware
  • Hardware description - MB-02+ interfaceOn this thread will soon released info about MB-02+ idisk interface ( memory paging mechanism, list of ports, addressing, MB IDE, schematics, etc... …

    ...
    MB-02+ use own external DMA chip (type UA828D = clone ... between internal ZX memory/external MB02 memory/internal or external I/O ports ... as during classic non DMA memory access. So DMA access ... +2A/+3 ULA use different memory contention)

    [B ...
    velesoft velesoft August 2013 Hardware
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... support 32K or even 64K external ROMs using the standard ... ZX rom emulation/replacement with external SRAM/FLASH EPROM.
    ... can be loaded to external sram memory and used instead ZX ... br /> Interface will support MB02+ memory paging (allram - 512kB ram/ ...
    velesoft velesoft October 2013 Hardware
  • New multi-interface for ZXI have in development new interface for ZX Spectrum. PCB size is similar as K-MOUSE interface and on board is CPLD (programmable logic), up to 1MB st…

    ... ZX rom emulation/replacement with external SRAM/FLASH EPROM.

    external sram memory and used instead ZX ... .
    Interface will support MB02+ memory paging (allram - 512kB ram/flashable ...
    chev chev October 2013 Hardware
  • idea: new gaming interface for ZX Spectrum (48k)First of all, I am not an expert this is just an idea of what I would like to see happening in the modern era of the ZX Spectrum. A compact, small, …

    ... ]You can of course use external logic to get rid of ... or whatever.

    For memory card read/writes you'd ...
    joefish joefish November 2013 Hardware
  • ULA snow effectIt's wintertime, you know. [quote="http://ramsoft.bbk.org.omegahg.com/floatingbus.html"]when the I register falls in the range 0x40-0x7F then the UL…

    ... gap.
    During a Z80 memory access (address range 0x4000 - 0x7FFF ... a RD or WR. The external multiplexers on the Z80 address ... mode. However, the ULA dynamic memory RAS/CAS handler still notices ... above, the ULA dynamic memory handler will force RAS low ...
    antoniovillena antoniovillena January 2014 Development
  • ZX Alien BreedNot sure if this has been mentioned already (I did trawl the threads but couldn't see anything :smile: ), but I've always hankered after a Speccy Ali…

    ... .mykeweb.co.uk/csscgc2014/images/external/AlienBreedZX.png[/IMG]


    The logo and '128K Memory' tagline are a nod to ...
    MykeP MykeP January 2014 New game ideas
  • Are there any custom +3 DOS file systems?I'm looking to see if there are any custom +3 DOS disk file systems available rather than the 40 track, 9 sector, 512 bytes/sector (I think that is r…

    ... by Chris Pile, if my memory serves. c'mon guys, it ... a Dr Sunn - my crap memory.....[/COLOR]

    There was ... /write +D floppies in an external 720K B: drive. Oh, and ...
    DEATH DEATH February 2014 Hardware
  • We could design the LokiWouldn't it be great... if this community would develop what Sinclair himself started but was never finished: a successor of the 128K with 'cartoon l…

    ... -bit internal databus (16-bit external) and a 32-bit wide ... and 2x256 bytewide Serial Access Memory ports, together all 6 ICs ... with it.

    Main Memory will be 72-pin EDO ...
    The_Bert The_Bert March 2014 Hardware
  • THE HOBBIT loading screenHello again, thought I'd have a go at an alternative loading screen for The Hobbit. [IMG]https://dl.dropboxusercontent.com/u/61658082/THE%20HOBBIT%…

    ... a multicolor screen takes more memory, so we would not be ... of location images, or use external storage...
    Einar Saukas Einar Saukas March 2014 Games
  • THE HOBBIT loading screenHello again, thought I'd have a go at an alternative loading screen for The Hobbit. [IMG]https://dl.dropboxusercontent.com/u/61658082/THE%20HOBBIT%…

    ... we may not have enough memory for this. I found a ... 30 locations only, or require external storage (which is not supported ...
    Einar Saukas Einar Saukas March 2014 Games
  • Totally random idea for the hardware nuts to exploreWhen it comes to multi-player games, how hard would it be to generate a second display from a single Speccy, instead of trying to link up machines, s…

    ... building this sort of advanced external gadgetry, but I can't ... change the original spectrum display memory map.

    It seemed ...
    Basher Basher April 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... for sure, but would an external video device even work on ... have to sacrifice your upper memory to exploit it.

    external power supply if you get ...
    joefish joefish April 2014 Hardware
  • Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …

    ... d3bf OUT (SHD),A; Switch memory.
    ;000A LD ( ... is pressed
    ; *
    ; External keyboard input routine
    ;
    Dan Antohi Dan Antohi April 2014 Hardware
  • Interface 1bis updateSupport for connecting a standard PC keyboard to the interface?s PS/2 socket, in place of a mouse, has been added. The external keyboard?s output is …

    ... d3bf OUT (SHD),A; Switch memory.
    ;000A LD ( ... is pressed
    ; *
    ; External keyboard input routine
    ;
    Dan Antohi Dan Antohi April 2014 Hardware
  • Fixing/modding my new +3Hi, In december I won an auction for a working +3 with a dead floppy drive, + a Multiface 3, some disks and tapes, for a very low price (I think nob…

    ... controller and hook up an external 3.5" drive. You would ... D7 of contented and uncontended memory) and one of Guesser's ... the motherboard to make the external socket "A:" instead of "B ... floppy port and have 2 external drives)
    JeffB JeffB April 2014 Hardware
  • Plea for new hardwareI'm posting this as a poll as I want to judge if I'm a solo loon going on about this, or if people really are interested in either of the following S…

    ... off reads to the video memory into its own screen buffer ... routines. But note that this external video RAM is not readable ...
    retrogod retrogod May 2014 Hardware
<1…17181920212223…34>

Latest Posts

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