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  • JSW2 - Game Loader DifferencesThere are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it …

    There are three official releases of JSW2. I'm not counting the 'JSW2-128' version here as far as I'm aware this was not in any way 'official' as it incorporates a built in cheat mode. Feedback on this point is appreciated. To quote the readme:

    spider spider September 2013 Sinclair Miscellaneous
  • Border colour on resetI have noticed a strange (and somewhat disquieting) glitch or feature on the ZX Spectrum. Sometimes, when the Reset button is pressed on the later m…

    ... .

    Sometimes, when the Reset button is pressed on the ...
    Swevicus Swevicus September 2013 Hardware
  • LOOK at the size of my Rom/EmulatorOk, we have 16k, 48k, 128k, even a 256 odd k Rom/Emulator But I want more :p Is there anything out there now or been worked on to give more, as the…

    ... , even a 256 odd k Rom/Emulator

    But I ... WANT A 1048576K(or more) Rom/Emulator


    Could ...
    ardentcrest ardentcrest October 2013 Sinclair Miscellaneous
  • Connectors for ZX BUSHere is photos of three different versions of connectors used on ZX interfaces: As you can see, each connector use different shape of contacts. Firs…

    ... /> Thickness of ZX board (system bus connector) is about 1.5 ...
    velesoft velesoft October 2013 Hardware
  • Emulating a +2A with floating bus modBefore I start hacking Fuse's source... Does any existing emulator have an option to behave as a +2A with the [URL="http://www.secarica.ro/html/plus…

    Before I start hacking Fuse's source...

    Does any existing emulator have an option to behave as a +2A with the [URL="http://www.secarica.ro/html/plus3_hardware.html#inFFport"]floating bus modification[/URL]?

    -Stephen
    stephenw32768 stephenw32768 October 2013 Emulators
  • Getting aquainted with the IF1bisToday, fifteen days after dispatch, the IF1bis arrived at my door. In perfect order. No customs, no TVA and no handling fee involved. The arrival of …

    ... , it counts as a full Reset for the Spectrum. I am ... is one or the other ROM present. I like this solid ...
    roko roko October 2013 Hardware
  • Use PLAY without the 128 ROMHere's a little thing I wrote called SoftPLAY: [url]http://www.worldofspectrum.org/forums/showthread.php?t=45259[/url] Now you can use the PLAY comm…

    ... bug-fixed version of the ROM command in RAM. The timing ... code runs faster than the ROM version. The click gaps you ...
    chev chev October 2013 Sinclair Basic
  • Games that checksum the ROMHello, is there a list of games that checksum the ROM and won't run (or maybe exhibit a different behaviour) unless it is the original 48k one? Searc…

    Hello, is there a list of games that checksum the ROM and won't run (or maybe exhibit a different behaviour) unless it is the original 48k one? Searched the forum but only found reference to the fact they exist and may be quite many.

    /Pedro
    pmsr pmsr October 2013 Sinclair Miscellaneous
  • z88dk and im2I set up a minimal IM2 mode so I can draw sprites for a laff [code] #include <string.h> #include <stdio.h> #include <im2.h> #include <stdlib.h> #in…

    ... I put
    #asm
    rst 56
    #endasm

    push ix
    rst 56

    LD BC ... to screen
    LDIR
    ; ROM routine, read keys and update ...
    slenkar slenkar October 2013 Development
  • ROM game cartridgesHi, last time i got al lot of ZX 48k stuff. Also all the 10 games on ROM cartridges, most of them are in good shape. I'm not a collector, so i have n…

    ... all the 10 games on ROM cartridges, most of them are ... have no use for those ROM cartidges.
    I like play ... .

    So are those ROM cartridges rare?
    And what ...
    Reinier Reinier November 2013 Games
  • ROM Routines Quick ReferenceSomebody was asking about calling ROM routines a few days ago, and it just so happens that I compiled this handy-dandy quick reference for same over …

    Somebody was asking about calling ROM routines a few days ago, ... .globalnet.co.uk/~jg27paw4/pourri/rom-routines.txt[/url]

    This is for the 48k ROM. I've just remembered that ... . not in the 48k BASIC ROM) in the 128k models but ...
    Battle Bunny Battle Bunny December 2013 Sinclair Miscellaneous
  • A "generic" loader for +3(e)I've made this loader for 128k games in +3DOS. [CODE]dos_open equ 262 dos_close equ 265 dos_abandon equ 268 dos_read equ 274 dos_write equ 277 dos_s…

    ... file

    ; page BASIC ROM
    ld a,$10
    reset of the computer).

    Zup Zup December 2013 Development
  • ROM replacement using 28C256 EEPROMThought I'd share a quick project I knocked up in order to use a 28C256 EEPROM in place of the standard 23128 ROM in the Spectrum. The connections a…

    ... place of the standard 23128 ROM in the Spectrum.
    ... />
    Lastly, the Hitachi ROM links need to be set ... cable connection allows the ROM to be dangled out ... :)

    Lastly, the ROM links need to be set ... the fitting of a ROM socket if not already ...
    balford balford December 2013 Hardware
  • Timex TC2068 ROM dump help.Hi, can someone point me how can I dump a Timex TC2068 rom. I want to try it on my machine for replacing a rom on other broken TC2068. Thanks, Chapas

    Hi,
    can someone point me how can I dump a Timex TC2068 rom. I want to try it on my machine for replacing a rom on other broken TC2068.

    Thanks,
    Chapas
    chapas chapas December 2013 Hardware
  • ZX Spectrum +2A and +2B - finding the true factsI'm confused. Some told me that a +2A has a +3 board, and the +2B got the simplified board. But I think that is not true. I have had over a dozen b…

    ... had the same new 64K ROM including +3DOS as the +3 ... would have needed an expansion bus interface with a floppy controller ...
    bverstee bverstee December 2013 Hardware
  • Macros and PasmoHi guys. I'm starting out with Pasmo for writing some stuff for the +3, and i'd like to use Macros for the calls to the BASIC ROM, where' you'd othe…

    ... the calls to the BASIC ROM, where' you'd otherwise write ... something like:
    [code]RST $28
    DEFW RoutineAddress[/code ... ]
    MACRO CBAS RoutineAddress
    RST $28
    DEFW RoutineAddress
    The_Bert The_Bert January 2014 Development
  • Spanish +2A/+2B/+3 ROM version 4.0Princemehagit from zonadepruebas.com has dumped this ROM here: [url]http://zonadepruebas.com/download/file.php?id=2078[/url] And I have included it…

    ... zonadepruebas.com has dumped this ROM here:

    [url]http ...
    antoniovillena antoniovillena January 2014 MIA/STP/SDP
  • Question about The Complete Spectrum ROM DisassemblyHello I just purchased a copy of the Complete Spectrum ROM Disassembly book in great shape and noticed that the cover looks slightly different than …

    ... copy of the Complete Spectrum ROM Disassembly book in great shape ...
    memrah memrah February 2014 Sinclair Miscellaneous
  • Rotronics Wafadrive romHi, If anyone has a copy of the Rotronics Wafadrive rom (wafadrv.rom) could you drop me an email please to help with the testing of an MIA Lerm tape…

    ... copy of the Rotronics Wafadrive rom (wafadrv.rom) could you drop me ...
    Gilby Gilby February 2014 MIA/STP/SDP
  • Venturespeak Helplooking at the code from ZX Computing, October, November & December 1986. How do I make the code do more then 3 letters say 5. and could it be made …

    ... CALL PROMPT
    60011 AF RESET XOR A
    60012 32785C ... PUSH BC
    60142 D7 RST #10
    60143 C1 POP ... XOR A
    60202 D7 RST #10
    60203 AF XOR ...
    ardentcrest ardentcrest February 2014 Development
  • My new Spectrum +3 has no start menu.Hi all, I recently took delivery of my 'new' Spectrum +3 from a Fleebay auction. So I serviced the drive on Saturday as it had a snapped drive belt …

    ... can and they complete successfully (reset with Break key pressed, then ... and low and behold the ROM chips are loose in their ...
    Amplitude Amplitude February 2014 Hardware
  • 4294967296 pseudo output portsIn an effort to avoid any hardware conflicts with the clashbasher interface I've been looking for an alternative to using the spectrum's ports for ou…

    ... their own ram and/or rom.

    So I thought ... sits passively on the spectrum bus. So the output only and ...
    Basher Basher March 2014 Hardware
  • Creating your own BASIC-commands on IF1bisThe old Sinclair IF1 has offered an easy possibility to create your own new BASIC-command: The use of the shadow variable VECTOR. This is described i…

    ... different versions of the shadow ROM! For instance, the STK-END ... CALBAS cannot be found on RST #10 ? it is now on ... RST #18. So be carefully, if ...
    HZJ HZJ March 2014 Hardware
  • DivMMC with other components..Having transferred my loyalties from the IF1bis to the DivMMC, I have finally been able to spend some time trying to set mine up on my ZX Spectrum. I…

    ... 'base' one, without additional ROM chip or ROM slot, primarily because I ... joy (or enjoy!). Both the reset and mmi buttons on the ... DivMMC simply reset the Spectrum to the Sinclair ...
    Simon_Carr Simon_Carr March 2014 Hardware
  • Address bus contents (i.e. PC) during execution of HALTI'm wondering if anyone can tell me what's placed on the address bus during execution of HALT, beyond the initial M1 cycle. The Z80 user manual state…

    ... 's placed on the address bus during execution of HALT, beyond ...
    zub zub March 2014 Hardware
  • 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…

    ... machine's ROM address space, and force it through a reset to ...
    joefish joefish April 2014 Hardware
  • Might need a new ROM for an MF128Had some trouble recently that has apparently killed my MF128, basically on pressing the NMI I get black paper and multicoloured vertical lines, and …

    ... for curiosity I lifted the ROM out of that and tried ...
    Macc Macc April 2014 Hardware
  • understanding machine codeHi Quick question. Am not really sure if it fits development forum as its not really development per se its more a learners question about developm…

    ... /> C8 RET Z
    D7 RST 10
    18F7 JR S_PRINT ... I will look at the ROM Disassembly to see if it ... also.....

    the line RST 10 seems to jump to ...
    username username April 2014 Sinclair Miscellaneous
  • BAS-ROM for HarlequinSince it is very easy for everybody to plug a new BAS-ROM into his Harlequin there is the question, what kind of ROM and what additional functions sh…

    ... plug a new BAS-ROM into his Harlequin there ... question, what kind of ROM and what additional functions ... should be collected in this ROM?
    Boundary condition: ... The new ROM has to be compatible ... A) The ISO-ROM
    B) The SE-ROM
    C) ...
    HZJ HZJ April 2014 Development
  • 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…

    ... contended video memory or "uncontended" ROM in the EXROM socket or ... as well call this "contended ROM".

    This solves ... the Z80 multiplexed address bus and data bus onto the SCLD/VRAM ... as the cartridge memory or bus expansion device. For reads there ...
    rga24 rga24 May 2014 Hardware
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Latest Posts

  • I am currently watching.....
    Paradigm Shifter on 12:49AM
  • New video about S-video modification on Issue two 48K Spectrum.
    Renegade on April 21
  • Fixed Speccy Software. And which games remained unfixed?
    John Elliott on April 21
  • Happy 40th Birthday to the Amstrad CPC464!
    rich_chandler on April 21
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    mel the bell on April 21
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    harriusherbartio on April 21
  • Elusive Strategy Games done by the Smaller or less Prolific Software Houses.
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  • +3 Disk drive motor
    AndyC on April 21
  • Celebrity deaths...
    mel the bell on April 20

HitBox

Word Docs Hits
rst 1.2K 2.5K
bus 4.3K 6.5K
reset 4.8K 6.9K
rom 15.6K 29.7K

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