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  • Hardware description - BETA DISK interfaceExist more versions and clones of BETA DISK interface. Beta disk 48, beta disk 128, brasilian clones of beta disk 48, russian clones of beta disk 128…

    ... - external TR-DOS rom will automatically disconnect if CPU ... original BETA128 interface disconnect external rom also if any instruction ... switch between two external 16kB rom pages...)

    bits 0 - 5 = unused (ignored)
    bit 6 = data ...
    velesoft velesoft August 2013 Hardware
  • MGT MOUSE - exist really ?I read disassembly of +D rom/ram code and from address #2249 is routine for read MGT MOUSE ports. I can't find any info about "MGT MOUSE". Exist real…

    ... +D rom/ram code and from address #2249 is routine for read ... :
    [CODE]THE 'MOUSE' ROUTINE
    This routine is also present in ...
    velesoft velesoft August 2013 Hardware
  • Routine for Currah speechI'm currently writing a routine for the Currah that will provide speech during a game. A timer is set to initiate the speech every 50 cycles of the …

    I'm currently writing a routine for the Currah that will ...
    daveysludge daveysludge August 2013 Development
  • Sinclair calculator reverse-engineered[url]http://files.righto.com/calculator/sinclair_scientific_simulator.html[/url]

    [url]http://files.righto.com/calculator/sinclair_scientific_simulator.html[/url]
    mjwilson mjwilson August 2013 Sinclair Miscellaneous
  • Reverse engineering Sinclair's 1974 calculatorInteresting read: [url]http://files.righto.com/calculator/sinclair_scientific_simulator.html[/url]

    Interesting read:

    [url]http://files.righto.com/calculator/sinclair_scientific_simulator.html[/url]
    Vanamonde Vanamonde September 2013 Sinclair Miscellaneous
  • Diag rom works cartridge on +2A/+2B/+3I'm not sure anyone has tested this before: using the diag rom (Paul Farrows) on a +2A/+2B/+3. I had a +2A with a problem, so I wanted to use the di…

    ... this before: using the diag rom (Paul Farrows) on a +2A ... wanted to use the diag rom.
    But both Interface 2 ... will work with the diag rom.

    And so it ...
    bverstee bverstee September 2013 Hardware
  • 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 …

    ... additions.

    Original teleport routine is copyright Your Spectrum issue ... (47416 bytes) and the keypad routine as per JSW1 albeit this ...
    spider spider September 2013 Sinclair Miscellaneous
  • Asm routine for AY playback?Hi, is possible to create and "name" an asm routine for playing some ay data? If yes, how? Example: Ok , I've finished a sound tracker song, now I n…

    ... create and "name" an asm routine for playing some ay data ... with or without the play routine? How does it work?
    Is possible to call the routine and make it play some ...
    DaRkHoRaCe DaRkHoRaCe September 2013 Development
  • MOVE_M Object Movement Manager for BASICAs moving things around on the screen is usually the slowest part of a game written in BASIC, I've been pottering around with this routine to handle …

    ... features.

    The routine gets its instructions from three ... a collision handler routine or key handler routine is required, or ... to the screen. The only ROM routines used are $028e ... ; GOSUB = line*256 for exception routine
    ;key = $FF to finish ...
    Battle Bunny Battle Bunny September 2013 Sinclair Basic
  • 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
  • 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…

    ... at address 0xd4d4 (interrupt service routine entry)
    wpoke(0xd4d5, ... to screen
    LDIR
    ; ROM routine, read keys and update clock ... br />
    ; pointers to interrupt routine.

    defb 200,200 ...
    slenkar slenkar October 2013 Development
  • Renegade Hit Squad Re-releaseI've found a problem with TZX included in file [url]ftp://ftp.worldofspectrum.org/pub/sinclair/games/r/Renegade(TheHitSquad).tzx.zip[/url]. The Spee…

    ... lenght is loaded by the ROM routine, so can't be a ...
    zx81 zx81 October 2013 MIA/STP/SDP
  • SkoolKit 3.6SkoolKit 3.6 has been released. In case you are unaware, SkoolKit is a set of command line utilities (written in Python) for disassembling Spectrum …

    ... or Z80
    [*]automatically label routine entry points
    [*]automatically annotate ... every routine entry point with a list ... fixes, and with or without unused bytes removed
    [*]produce a ...
    SkoolKid SkoolKid November 2013 Announcements
  • Switchable Timex Sinclair 2068 ROM modificationI have just finished a switchable TS2068 / Spectrum ROM modification and implemented it on two TS2068s. It uses a 32K EPROM chip for the HOME ROM and…

    ... a switchable TS2068 / Spectrum ROM modification and implemented it on ... EPROMs are completely standard TS2068 ROM images. The Spectrum half ... modified version of the Spectrum ROM, modified to reset port ... instead of the Timex HOME ROM location.

    These ...
    rga24 rga24 November 2013 Hardware
  • Troublesome routine, help needed!Having problems with this routine, it basically fires a rocket up the screen, but refuses to detect collisions. I'm using attribute blocks for detect…

    Having problems with this routine, it basically fires a rocket ... tried allsorts to remedy this routine but nowt seems to work ... /> call print ;call the print routine
    pop bc
    djnz ...
    daveysludge daveysludge November 2013 Development
  • that "listing variables during runtime" thingWell, I did eventually finish this, but with my meds playing up I don't have much time each day that I can spend at the computer, so it's taken rathe…

    ... /> NOTES:
    ; Fixes ROM stacking error
    ; Handles ... 4th - the streamlined print routine assembler listing:
    [ ... Part the 5th - the relocation routine assembler listing:
    [url ... addresses within the target routine, which would otherwise become ...
    Battle Bunny Battle Bunny November 2013 Sinclair Basic
  • 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
  • Simple memory transfer routineI'm looking for a simple memory transfer routine that shifts 32 bytes of data from the address HL is set to 55143, I have tried using LDIR, but cant …

    ... for a simple memory transfer routine that shifts 32 bytes of ...
    daveysludge daveysludge November 2013 Development
  • Clear the screen from assemblerI want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is p…

    I want to clear the screen before I draw my graphic elements on it. Speed is not important so I was thinking of using the rom CLS option if that is possible. Can anyone advise on how to call this command or some similar routine to clear the screen?
    Mr Millside Mr Millside November 2013 Development
  • Tricky ZX RepairHello guys, This time I put my hands on a very nice Issue 3 16K, upgraded to 48K. To bertter explain "nice", it is absolutely mint, not a scratch on…

    ... go through the whole initialization routine, halting with the first 1 ... 'm really puzzled. Apart from ROM and ULA, there's nothing ...
    Falco-F8L Falco-F8L December 2013 Hardware
  • 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
    ret

    ; paging routine
    ; destination page is a ... going to use any BASIC routine, I guess it could be ... given length (to put that routine inside BASIC). I'm doing ...
    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
  • Interesting 48K failureI thought I'd recount a failure I've not seen mentioned before that I saw tonight while fixing a 48K issue 6 board. The background: The initial fail…

    ... Z80 (pretty unlikely). I could discard this by waiting until the ... border colour when the NMI routine exits (and also save the ...
    Winston Winston December 2013 Hardware
  • 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
  • Un-PLOTting in the #0 areaHow do I go about un-PLOTting in the bottom 2 lines. I am aware the ROM PLOT routine only works in the top 22 rows, so how would I go about depletin…

    ... /> I am aware the ROM PLOT routine only works in the top ...
    daveysludge daveysludge January 2014 Development
  • Un-PLOTting in the #0 areaHow do I go about un-PLOTting in the bottom 2 lines. I am aware the ROM PLOT routine only works in the top 22 rows, so how would I go about depletin…

    ... /> I am aware the ROM PLOT routine only works in the top ...
    daveysludge daveysludge January 2014 Development
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HitBox

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calculator 1K 1.5K
routine 9.5K 14.8K
discard 228 261
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rom 15.6K 29.7K

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