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Search Again :: Adv Search 1000 results in 0.043s
<1…20212223242526…34>
  • divIDE x Spectrum clonesAnyone has a Spectrum clone and did a test with divIDE? Here in Brazil we have 2 Spectrum clones (TK90X and TK95) that are almost 95-99% compatible w…

    ... , but problems with adress and data bus on TK90X apears when we ... buffers in the address and data buses. Quality of componentes are ...
    Eduardo Eduardo February 2012 Hardware
  • Maritrini and Cray 5 loading problemsHas anyone else here had issues loading either of these on a 128k? No matter what I try, both these games refuse to load properly. I can get both t…

    ... , EVEN when secaria's floating bus fix is implemented (a resistor ...
    nuggetreggae nuggetreggae March 2012 Games
  • Maritrini and Cray 5 loading problemsHas anyone else here had issues loading either of these on a 128k? No matter what I try, both these games refuse to load properly. I can get both t…

    ... puts rogue bytes on the data bus. They came with 48K+ machines ...
    Jmk Jmk March 2012 Games
  • Issue 3B only sees 16k (and RAMTOP NO GOOD on loading)A ZX+ with issue 3B board that i got recently, does not see anything more than 32768 (sometimes 37267..) on "PRINT PEEK 23732 + PEEK 23733 * 256 (Ent…

    ... RAM exposes their data bus on the rear bus, so they can be ...
    mcleod_ideafix mcleod_ideafix March 2012 Hardware
  • Repairing another Issue 2 48K Spectrum.I said at the start of the other thread that I've got another one of these and I've started investigating it. The board is more-or-less exactly the …

    ... !

    In step c data bus line D7 was high when ... something was interfering with the data bus and suspecting that an upper ...
    Zorn Zorn April 2012 Hardware
  • Spectrum +3, Issue 2...I have just had plonked on my desk a nice issue 2 Spectrum +3. I'm not sure if its 100% working yet, as I have not plumbed it into a telly. So, assu…

    ... real read from the video data bus, by means of three-state ...
    BiNMaN BiNMaN April 2012 Hardware
  • BorderTron 3000A little bit of speccy-related fun for a Friday afternoon... I've knocked together a program for Windows which I've called Bordertron 3000 (a suitabl…

    ... />
    And bits 7 and 6 are unused... Maybe they originally ... the border bright (bit 6 on) or even flash (bit 7 on), but ...
    na_th_an na_th_an April 2012 Announcements
  • Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…

    ... /> [LIST]
    [*]Input port $FE bit 7: always value 0 in ... -Spectrum.
    [*]Input port $FE bit 6: default value 1 (when there ... TK95.
    [*]Input port $FE bit 5: usually 1 in TK90X ... attribute address, it will copy bit 5 from the attribute value ...
    Einar Saukas Einar Saukas May 2012 Emulators
  • Dimming the screen...Hi Folks, I was hoping someone on here could help me with a wee machine code routine. I have written the following example in BASIC: [CODE]100 REM…

    ... hl,22528
    loop2 res 6,(hl)
    inc hl
    bit 6 in the byte HL is ... attribute (BRIGHT is controlled by bit 6 in the attribute byte).
    na_th_an na_th_an May 2012 Development
  • Dimming the screen...Hi Folks, I was hoping someone on here could help me with a wee machine code routine. I have written the following example in BASIC: [CODE]100 REM…

    ... hl,22528
    loop2 res 6,(hl)
    inc hl
    bit 6 in the byte HL is ... /> Actually, res 6,(hl) is resetting the bright bit, so that loop ...
    halt
    loop2 res 6,(hl)
    inc hl
    mcleod_ideafix mcleod_ideafix May 2012 Development
  • Ear + Mic bits behaviour in relation to beeper outputHave just read [url=http://www.worldofspectrum.org/forums/showpost.php?p=348953&postcount=38]this old post of Joefish's [/url] in the development for…

    ... effect seems to be a bit more subtle than I'd ... EAR+MIC, and just EAR is very small. While toggling the MIC bit ... with the EAR bit set makes a *very ...
    ccowley ccowley June 2012 Emulators
  • GUI/OS for the Spectrum?Hi, Is anybody working on a WIMP/GUI system for the Spec? Is there anything current out there? [url]http://snakeoillabs.com/wordpress/2005/10/30/8…

    [QUOTE=weesam;632794]a single processor can execute a single task at a single instant.[/QUOTE]

    Modern processors are somewhat more complicated than the colourful diagram an ALU and data bus in the ladybird book of computers :p
    guesser guesser June 2012 Development
  • Known Z80 M1 problems?I got an email yesterday from someone asking for a Z80 without the M1 problem. I only know about the fanout problem that many Z80's are suffering of…

    ... 128K toastrack, basically the bus is much longer in the ... some extra chips on the bus) causes timing issues (some ... on the Spectrum's bus to mean that the ... t reliably drive all 8 data bus lines high by the ... time the Z80 sampled the bus (compounded by the W5100 ...
    Winston Winston June 2012 Hardware
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... CPU reads from the data bus during an INTA bus cycle. Useful, for ... interfaces that put garbage on data bus, or clones under suspect for ... not adding pullups on data bus lines ;) (you may guess why ...
    mcleod_ideafix mcleod_ideafix June 2012 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... CPU reads from the data bus during an INTA bus cycle.[/quote]Oo ...
    Jonathan Harston Jonathan Harston June 2012 Development
  • Jelly-Vision!As threatened in the "'Spectrum Play' Error" thread, here's a ruff'n'reddy interrupt driven full screen wobbling routine which has no practical use w…

    ... . Jelly-Vision relies on the data bus holding $FF when there are ...
    Battle Bunny Battle Bunny June 2012 Sinclair Basic
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ),B
    dec hl
    bit 3,h
    jr nz ... .htm#L294B[/url]

    BIT 6,B
    RET

    Dr BEEP Dr BEEP July 2012 Development
  • Machine Code Routine of the weekHow about a thread that has a routine each week that is in [B]assembly language[/B] and is also described in great detail what the hell is going on …

    ... ),B
    dec hl
    bit 3,h
    jr nz ... .htm#L294B[/url]

    BIT 6,B
    RET

    antoniovillena antoniovillena July 2012 Development
  • Issue 2 Failed 48k to 128k upgradeI have been trying to upgrade my Issue 2 with the help of Velesoft, using this schematic; [IMG]http://i764.photobucket.com/albums/xx284/arioch1973/4…

    ... something is messing with the data bus lines and prevents the CPU ...
    mcleod_ideafix mcleod_ideafix July 2012 Hardware
  • DooM on Spectrum 128kHello my fellow WoS'ers My hope is that you can help me, recently I discovered a DooM clone -esque on the Humble spectrum, - here is a [URL="https:/…

    ... routine saves the +128k system data and patches the return address ... routine restores the +128k system data and the normal $2d2b return ... /> saved:
    [/code]
    The DATA lines specify the LOAD address ... /> 10 DATA l1,"0"
    11 DATA l2,"7",l2,"6",l2,"4 ...
    Battle Bunny Battle Bunny August 2012 Games
  • The need of having a 257-byte table for IM2 routinesThis came from a discussion at the speccy.org forum. I have understood that the reason behind the 257-table for IM 2 routines is due to certain joys…

    ... IM2 interrupt cycle pull-up data bus via 100 Ohm resistors for ...
    velesoft velesoft August 2012 Development
  • The need of having a 257-byte table for IM2 routinesThis came from a discussion at the speccy.org forum. I have understood that the reason behind the 257-table for IM 2 routines is due to certain joys…

    ... IM2 interrupt cycle pull-up data bus via 100 Ohm resistors for ...
    Alcoholics Anonymous Alcoholics Anonymous August 2012 Development
  • The need of having a 257-byte table for IM2 routinesThis came from a discussion at the speccy.org forum. I have understood that the reason behind the 257-table for IM 2 routines is due to certain joys…

    ... Russian clones having a unstable data bus during INTA cycles, or DividePlus ...
    mcleod_ideafix mcleod_ideafix August 2012 Development
  • Messenger interfaceHave anyone photos, schematic, rom images, documentation, or software for Messenger interface ? [url]http://www.worldofspectrum.org/infoseekid.cgi?i…

    ... in same time to data bus different value (data collision)...
    Test this ...
    velesoft velesoft August 2012 Hardware
  • Your Sinclair Smash Tips - Corrected ListingsOver at Hercules' [URL="http://craigsretrocomputingpage.eu5.org/smashtips/index.html"]YS Smash Tips site[/URL] he has a list of hacks that don't work…

    ... USR 23296
    1000 DATA 243,49,240,95,17 ... ,156,6,255
    1030 DATA 205,123,91,6,255, ... 205,123,91
    1040 DATA 33, ... 146,126
    1090 DATA 237,103,35,11, ... [B][COLOR="Red"]1140 DATA 6,119,35,16,252,237 ... COLOR][/B]
    1150 DATA 195,3,129,126,237 ...
    jp jp August 2012 Games
  • Spectrum 128 toaster and divide incompatibility problems with some demos and games.Okay so I got this thing now. It?s my first Spectrum ever. [img]http://img836.imageshack.us/img836/2016/speccyl.jpg[/img] [url]http://img824.image…

    ... LED)

    The Speccy bus has an awful lot of ... 't actually drive the Spectrum bus reliably on anything but a ... with a big long winding data bus that must add a fair ...
    Winston Winston August 2012 Sinclair Miscellaneous
  • Spectrum 128 toaster and divide incompatibility problems with some demos and games.Okay so I got this thing now. It?s my first Spectrum ever. [img]http://img836.imageshack.us/img836/2016/speccyl.jpg[/img] [url]http://img824.image…

    ... br />
    The Speccy bus has an awful lot of ... actually drive the Spectrum bus reliably on anything but ... a big long winding data bus that must add a ... that the CPU adress bus is connected using diodes ... that the CPU adress bus is now not directly connected ...
    ingo ingo August 2012 Sinclair Miscellaneous
  • WibbleBibble's Basic threadHi in an attempt to keep my questions from spamming the forum. I think its better to put them all in one place. Thanks everyone so far, I feel I am …

    ... N
    1040 DATA "A",0,1,6,12,9,25,16 ... ,49
    1050 DATA "B ... 224,192,255
    1060 DATA "C",0,128,96,48 ... 24,8,140
    1070 DATA "D",63,127,119,119 ... ,127,112,112
    1080 DATA "E",255,255,129,225 ... 255,0,0
    1090 DATA "F",252,254,238,238 ...
    WibbleBibble WibbleBibble August 2012 Sinclair Basic
  • Issue 2 Failed 48k to 128k upgradeI have been trying to upgrade my Issue 2 with the help of Velesoft, using this schematic; [IMG]http://i764.photobucket.com/albums/xx284/arioch1973/4…

    ... actual order of address and data bus wiring for all RAM does ... /> [*]Don't mix address with data lines!
    [*]For DRAM the ...
    1024MAK 1024MAK August 2012 Hardware
<1…20212223242526…34>

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