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  • 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…

    ... MB02+).
    Winston made an interface that strikes the limits of ... snoop the bytes coming from RAM - sometimes it would see them ... be able to control the chip's RESET pin in software ... . It'll usually survive an interface getting knocked out of it ...
    Winston Winston August 2012 Sinclair Miscellaneous
  • Disciple troubleAnother day, another problem. While waiting for my 16-to48K upgrade chips to arrive, I tried to bring my Disciple back to life, which I just bought a…

    ... of ROM and 8K of RAM. The ROM is not rewritable ... chip and swap it. The System file is loaded into the RAM ... supports the DISCiPLE or +D interface to make images and then ...
    Jmk Jmk November 2012 Hardware
  • The new Superfo cloneHi In the spanish forum speccy.org some guys and me have optimized the superfo clon to have less ICs. The actual design has 39 ICs versus the 45 ICs…

    ... port 31. For example KEMPAY interface....

    [QUOTE=antoniovillena; ... to "00" all the RAM when boots. There is no ... anyone erase full flash eprom chip then will possible boot SNA48kB ... device (you need only divide interface with flashed my DIVIDE BIOS ...
    velesoft velesoft December 2012 Hardware
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... has already been compressed - with Turbo Imploder in fact. Hence the ... game into the Spectrum's RAM at that location.

    turbo loader is different, it uses ... the loading and the game interface screens have been compressed with ...
    Alessandro Grussu Alessandro Grussu January 2013 Brand new software
  • ZX7: an "optimal" LZ77 packerAbout 20 years ago, I started a M.Sc. in Computing, planning to work on data compression. Although I quickly changed to another subject for a number …

    ... already been compressed - with Turbo Imploder in fact. Hence ... into the Spectrum's RAM at that location.
    turbo loader is different, ... loading and the game interface screens have been compressed ... a simpler version without turbo load in only ...
    antoniovillena antoniovillena January 2013 Brand new software
  • Introduce yourself[SIZE=3][FONT=Comic Sans MS]This is the thread to stop by & introduce yourself.[/FONT][/SIZE]

    ... think. It had the 16k RAM pack and everything. Not that ... a stash of games, and Interface 2 (and a Backgammon ROM ... if you include my Metro Turbo).

    **I actually read ...
    gutted gutted January 2013 Chit chat
  • PlusD Mini: implementing the CPLDI am doing my first attempts on creating a CPLD to use as replacement for the PlusD's GAL (and other logic lateron). I use the Xilinx XC9500XL series…

    ... /> I have used K-Mouse Turbo schematics (2008 and 2011 versions ... 's bus signals, allthought the chip is fed by 3.3V ... 5 volt chips on the interface (the memory).

    One ...
    Winston Winston February 2013 Hardware
  • The Disciple clone... doable?Hi. As a spectrum user in the 80's this was the dream interface all-in-one for me. I have a 48k+ and planning on get a 128K toast-rack later. Anyway…

    ... yes, then the disk controller chip WD1772 has to run at ... RAM...
    [QUOTE=zub;685088]

    [LIST]
    [*]Could the interface ...
    1024MAK 1024MAK February 2013 Hardware
  • DIVIDE versus ZX128 ROMDivide interface use hardware mapping of extra memory on this fixed points in 48rom: #0000 - power-on/reset/rst0/software restart #0008 - syntax erro…

    ... allram mode with 16kB ram blocks paging instead ZX ... rom, but all this ram is used for Divide ... br />
    Divide interface need hardware modification = add next ... possible install to divide interface any ZX128 rom ( ... can only replace rom chip on ZX128 board and ...
    velesoft velesoft March 2013 Development
  • Rocky Gush Floppy Drive InterfaceI have a Rocky Gush Floppy Drive Interface which I would like to post the details under the Hardware section of the website. What is correct procedur…

    ... accessed, so the 6264 RAM's chip selected line is activated. ... high whilst the FloppyOne's RAM is being accessed, presumably to ... has ROM from 0x0000?0x1fff, RAM from 0x3000?0x3fff, but ... 0x2fff for control of the interface, whereas most other interfaces would ...
    zub zub March 2013 Hardware
  • Rocky Gush Floppy Drive InterfaceI have a Rocky Gush Floppy Drive Interface which I would like to post the details under the Hardware section of the website. What is correct procedur…

    ... to build a duplicate interface, and there are also ... can connect the Interface 1 or joystick interface, etc.[/QUOTE ... told me that the Chip was switching the data ... not busy), and that RAM is at 0x3000 and ...
    [QUOTE]Remember the interface is just about 30 years ...
    zub zub March 2013 Hardware
  • Interface 1 bisOk, well the postmans just been and brought with him my new arrival, the Interface 1 bis. So as promised I thought I'd share some initial usage exper…

    ... paging..[/QUOTE]

    The 'Interface 1bis' works differently from the ... extra hardware, like the sound chip, which can still be driven ... his own 'Turbo Mouse' drivers in those games. The 'Interface 1bis' doesn ... obviously not with Velesoft's 'Turbo mouse'
    Dan Antohi Dan Antohi March 2013 Hardware
  • Mouse systems for ZX Spectrum[U][B]Mouse systems for ZX Spectrum[/B][/U] Okay, I have been reading the [URL="http://www.worldofspectrum.org/forums/showthread.php?p=688449#post68…

    ... on any adress in ZX ram. If we need modify old ... driver placed in free(unused) ram, but often is very hard ... /> Reply:
    New K-MOUSE TURBO interface contain vector stabilisation = during IM2 ... stable with connected K-MOUSE TURBO interface.
    velesoft velesoft March 2013 Hardware
  • Upgrade ZX Spectrum 128,+2,+2a/b,+3[B]1. Debugging RD #7FFD ZX Spectrum 128,+2:[/B] [url]http://zx.clan.su/forum/8-121-1#795[/url]

    ... ]

    Yes. But GAL chip can fix more bugs. Reading ... is in slow(contended) ram. GAL chip use one free pin (11 ... , but with raining are ZX ram unstable and software often crash ... TR-DOS emulation on DIVIDE interface, then all divide users can ...
    velesoft velesoft March 2013 Hardware
  • Multiface 3 programming guide anywhere?I'm interested in the tantalising little bit of text at the bottom of my Multiface 3 manual (under the "Using 8K RAM" section): "Please send a SAE…

    ... aware there is a PAL chip on the board, and ... addresses of things in the RAM are:
    [/QUOTE]
    ... top-end of the 8K RAM (machine state) and most ... which bits of the RAM I could safely use ... between DOS and the DD interface) rather than simply on entering ...
    u6c87 u6c87 April 2013 Hardware
  • 1x XC9572XL or 2x XC9536XL?I'm working on some projects which do not settle with only one XC9536XL CPLD. Main reason is of course the lack of user pins on the XC9536XL, I need …

    ... the local ground around the chip well above 0 volts while ... ?

    The K-Mouse Turbo interface has a similar approach and ...
    bverstee bverstee April 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    Some ideas:
    - Interface 2 clone, nobody wants to ... with 512KB RAM/512KB ROM to support
    ResiDos)
    - Turbo Sound ...
    kpuchatek kpuchatek April 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    >>Interface 2 clone
    >> ... already created divIDE with 512KB RAM. It would be even better ... switch).

    >>Turbo Sound FM
    >> ...
    kpuchatek kpuchatek April 2013 Hardware
  • 2013 projects: new PlusD, DivIDE and MultifaceI have written about this before, but as I want to let these project be influenced by your opinions, I thought to create a separate topic about it. …

    ... may need Pentagon :-) )

    Interface 2 is just two joystick ... slot at back side. Custom chip in it is only for ... related to microdrives - it is Interface 1.

    If you ... /> Why do you need more RAM ? To use ResiDOS.
    kpuchatek kpuchatek April 2013 Hardware
  • DIVMMC, a new compact interface for ZX SpectrumAfter a long gestation period and a short period of testing, Mario Prato, member of the Italian [URL="http://apuliaretrocomputing.wordpress.com/"]Apu…

    ... as similar ZXMMC interface (or ZXMMC+ interface). I see only ... same as on original divide interface) with system. Now exist ... for this DIVMMC interface, but PCB contain big ram 128kB (with ... use chaotic connection of eeprom chip, DIVMMC use correct connection ...
    velesoft velesoft May 2013 Hardware
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... ?

    Not exist DIVIDE interface or DIVIDE clone full compatible ... mode = zx ram page is placed instead zx rom chip in low ... be connect with ROMCS if interface is connect to brasilian ZX ...
    velesoft velesoft June 2013 Hardware
  • 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 :)

    ... br />
    No. K-MOUSE interface use different ports and is ... can be problem with divide ram chip, because FATWARE use only 16kB ... ram chip.

    Please connect DIVIDE with fatware system + K-MOUSE interface ... What version of K-MOUSE interface you use ?
    velesoft velesoft July 2013 Announcements
  • DivMMC EnJOY!Coming up... [IMG]http://benophetinternet.nl/hobby/vanmezelf/DivMMC_enjoy_first_render.jpg[/IMG]

    ... to go for flash RAM over battery backed RAM. The initial warm ... good at corrupting battery backed RAM.[/QUOTE]

    Battery is ... PCB originally only for RTC chip, but can be connect also ... rom chip only. I test battery backup on my PROFI INTERFACE and ...
    velesoft velesoft August 2013 Hardware
  • DivIDE black editions availableI have about 6 more DivIDE black editions ready, and will finish more this week. [B]DivIDE 57c BLACK edition including ESXDOS 0.8.5 and 1GB CF card[…

    ... any info about PLUS D interface ?
    - memory layout (I know ... external memory 8kB rom + 8kB ram = very similar as DIVIDE)
    chip. But not exist full info ...
    velesoft velesoft August 2013 Sales
  • DivIDE black editions availableI have about 6 more DivIDE black editions ready, and will finish more this week. [B]DivIDE 57c BLACK edition including ESXDOS 0.8.5 and 1GB CF card[…

    ... br /> 8192-16383 = 8kB external ram.

    If PLUS D ... in DIVIDE memory. PLUS D interface bust have disable memory, only ... be ignored) with connected DIVIDE interface (with open jumper JP2 - ... way rewrite firmware for GAL chip (or CPLD firmware on PLUS ...
    velesoft velesoft August 2013 Sales
  • Hardware description - PLUS D interfaceThis new thread will contain onformations of different ZX devices. Some devices contain manuals, schematics or firmware for some chips, but some peop…

    ... short description of PLUS D interface.

    Function is derived ... for download firmware of GAL chip, then here is correct: [URL ...
    8192-16383 = 8kB external ram.

    If PLUS D ...
    velesoft velesoft August 2013 Hardware
  • 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…

    ... Spectrum clones have BETA128 interface integrated on main board ... used only one contended ROM chip (rom 64kB or similar ... But capacity of rom chip can be only 16kB, ... one big 64kB chip. In 64kB chip is 16kB of ... SERVICE ROM to ZX ram, then memory is disconnect ...
    velesoft velesoft 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... …

    ... br />
    Only 16kB rom/ram pages is supported.

    ram page 0 with write protect ... )

    Original MB-02+ interface contain on PCB big socket ... change rom pages and rewrite chip via special software utility.
    velesoft velesoft 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... …

    ... reading IDE data from DIVIDE interface. With DMA support can ZX ... LDIR). DMA chip can send data block from ZX ram to ULA ... DMA data to videoram(slow ram) ULA chip slow down DMA transfer ... from REALSPECTRUM emulator (with MB02 interface support)[/U]

    ...
    velesoft velesoft August 2013 Hardware
  • New audio interfaces.I heard that gasman and someone else had to release two new input interfaces for spectrum+AY : a theremin interface and something else I can't rememb…

    ... making some kind of audio interface with small synthesizer built-in ... take not to much of RAM.

    Another thing is ... easier with all those programmable chip (altera and whatever more there ...
    Yerzmyey Yerzmyey August 2013 Announcements
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