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  • Amstrad +2 Diagnostic BoardCan anybody help I wish to buy the Diagnostic Board that connects to the I/O strip at the back of the Amstrad ZX Spectrum +2. Many thanks Martin

    ... Board that connects to the I/O strip at the back of ... ! :D

    Seriously, if I could find one of those ...
    DEATH DEATH March 2007 Wanted
  • Features that emulators don't haveI believe most of us use more than one emulator, mainly because there isn't one emulator that has all the features we need or want to use. We also kn…

    ... From my own (limited) experience: I made Drive Imager for Windows ... of limited GUI objects. I went to 'official' KDE ... C++ code - practically replacing I/O calls, GUI calls. And making ... relevant today.
    Did I discovered again cross platform programming ...
    piters piters March 2007 Emulators
  • +3 external floppyI'd like to connect 3,5" PC floppy drive (NEC) to ZX Spectrum +3 (with diode for RDY). Here are questions: 1) It seems the PC floppy uses just +5V, …

    [QUOTE=orange;178472]I'd like to connect 3, ... take this voltage from "EXPANSION I/O socket"? I'm
    worried that ... /> All NEC floppy drives what I saw worked with only 5V ...
    piters piters March 2007 Hardware
  • Regarding the interface with USB port[url]http://www.octocom.es/reuniones/art_madridsx07_11.html[/url] [url]http://velesoft.speccy.cz/kmouse/km-doc/kempston_mouse_turbo_interface/km-t_2…

    ... interrupt processing from the Z80? I note that M1 isn't ... IORQ low with M1 high. I've been caught out by ... acknowledge by the Z80, the I/O port decoding would see IORQ ...
    Winston Winston March 2007 Hardware
  • Regarding the interface with USB port[url]http://www.octocom.es/reuniones/art_madridsx07_11.html[/url] [url]http://velesoft.speccy.cz/kmouse/km-doc/kempston_mouse_turbo_interface/km-t_2…

    ... processing from the Z80? I note that M1 isn't ... by the Z80, the I/O port decoding would see IORQ ... read the USB chip. I think I did correct the problem ... version 1a interface, but I can't find the ...
    As far as I remember I never experienced the problem you ...
    dtl dtl March 2007 Hardware
  • Got my Wii modchipped todayAnd it's working great. I've tried four "backups" so far, and everyone has worked perfectly. The chip I went for was the [URL="http://www.wiikey.cn…

    ... which do you mean? And I do not really honestly mean ... per se.

    I do understand where you are ... them no matter what ... I'm not talking about killing ... that one would leave an I.O.U. note behind ;-) ( ... when theft is involved I would hope the person ...
    Skarpo Skarpo April 2007 Chit chat
  • Faulty M1 linesI'm sure this has been discussed before, but using the forum search for the word 'M1' pulled back no hits, which surprised the hell out of me. Anywa…

    ... you to disable ULA's I/O decoding altogether.

    And ... I'm indeed having what I think it's ... of my Spectrums! The IF1 I have works with one ( the ... work in the unmodified one. I even checked three different Z80 ...
    Marcelo Marcelo April 2007 Hardware
  • Faulty M1 linesI'm sure this has been discussed before, but using the forum search for the word 'M1' pulled back no hits, which surprised the hell out of me. Anywa…

    ... OUT instruction is outputting an I/O address. IORQ and WR ... of unknown issue because I've not taken it ... work with the board. I used this test program:< ... .

    So I drilled out the M1 line ... appears to be intermittent. I've still not determined whether ...
    Winston Winston April 2007 Hardware
  • Faulty M1 linesI'm sure this has been discussed before, but using the forum search for the word 'M1' pulled back no hits, which surprised the hell out of me. Anywa…

    ... OUT instruction is outputting an I/O address. IORQ and WR must ... therefore appears to be intermittent. I've still not determined whether ... ).[/quote]

    Hmmm... I'm at a loss here ... the processor. Unfortunately, as I said above, I changed three CPUs in ...
    Marcelo Marcelo April 2007 Hardware
  • Need advice choosing one of these optionsA few spanish friends are willing to help me build and program the ethernet interface for the Speccy. Here are the possibilities. Any advice would be…

    Personally, I'd avoid things that depend ... , a 74HC138 to decode the I/O port address and a 3 ... production.

    But as I said earlier, my own preference ...
    Winston Winston April 2007 Hardware
  • Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…

    ... could just the testing ROM I "published" (well, made available) a ... shove it in a Multiface (I actually use a Multiprint), and ... button. Bingo RAM and ULA I/O diagnostic.

    VERY handy ... for fixing Speccies, I can assure you....
    Spirantho Spirantho April 2007 Hardware
  • Testing RAM Chips After RemovalHi I am going to use Winstons Hot Air Gun method of removing the RAM chips from a 4S circuit board. I wish to check the RAM chips, I have a Logic Pr…

    ... />
    - 1 x 74HC138 - for I/O port decoding
    - 2 x ... will inevitably benefit from improvement. I'd really like to get ... 25th Anniversary month :-)

    I also want to write some ... real nightmare.

    I think I've posted this before, but ...
    Winston Winston April 2007 Hardware
  • Reading the border colorI am building a snap-button to my ZX-PC Interface. Is there a way to read the bordercolor which is set by an OUT-command. (and please don't tell me …

    ... =Dr BEEP;184801]Well,
    i was planning to restore the ... * drive the Speccy crazy, but I think it's just worth ... so it decodes writes to I/O port $FE and stores (in ... in another, so far unused I/O port address...

    Marcelo ...
    Marcelo Marcelo April 2007 Hardware
  • Reading the border colorI am building a snap-button to my ZX-PC Interface. Is there a way to read the bordercolor which is set by an OUT-command. (and please don't tell me …

    ... 's address and data bus. I'd suggest using 74HC logic ... use a 74HC138 as the I/O decoder, that way you can ...
    Winston Winston April 2007 Hardware
  • Speccy Film/TV License that bears the least similarity to its sourceI was thinking earlier today about the computer game version of [i]Jaws[/i] that was published in 1989 or thereabouts and has pretty much nothing to …

    ... /> 40 IF i$"q" AND i$"a" AND i$"o" AND i$"p" THEN GO ... /> [/code][/QUOTE]

    lol, I'm sure that piece of ...
    Scyphe Scyphe May 2007 Games
  • Oneliner contestHello to you all, I dare you to make a program on 1 BASIC line. Here is the place to sent your ONELINERS [url]http://www.zxspectrum.00freehost.co…

    I recon I am in for the running ... ,x; PAPER 2;" ": LET i$=INKEY$: LET r=(i$="p" AND x
    BloodBaz BloodBaz May 2007 Development
  • Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…

    ... you have some (ULA) infos, i will be very grateful.[/QUOTE ... infos do you need?
    I don't know much about ... CPLD programming, but i know that the layout can ... Leningrad-1 schematic, with modified I/O space decoder.
    Sonic Sonic May 2007 Hardware
  • Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…

    ... much about CPLD programming, but i know that the layout can ... Leningrad-1 schematic, with modified I/O space decoder.[/QUOTE]

    Gods Gods May 2007 Hardware
  • Russian clone of ZX-Spectrum 48kThe classic russian clone of ZX-Spectrum 48k [URL="http://sblive.narod.ru/ZX-Spectrum/Leningrad48k/Leningrad48k.htm"]http://sblive.narod.ru/ZX-Spect…

    ... ;189649]It has the only I/O port - #FE (it's always ... selected, by access to any I/O address).[/QUOTE]

    Cute ... appreciate that I am [I]not[/I] an electrical engineer, so I do need ...
    zub zub May 2007 Hardware
  • The I/O interface Simon's selling[url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120122353332&fromMakeTrack=true&ssPageName=VIP:watchlink:middle:uk[/url] Is this the kind …

    ... get bad feedback, too. Although I'm not sure what he ... 's probably a '138 ). However, I think once you have it ... hard to figure out what I/O port(s) it uses.
    Winston Winston May 2007 Hardware
  • The I/O interface Simon's selling[url]http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&item=120122353332&fromMakeTrack=true&ssPageName=VIP:watchlink:middle:uk[/url] Is this the kind …

    ... ?[/QUOTE]

    The left i/o connector looks like it's ... input (TTL) and the right i/o connector looks like it's ... the transistors driven.

    I don't know about any ... magazines with such projects but I do remember something about home ...
    Alcoholics Anonymous Alcoholics Anonymous May 2007 Hardware
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ...
    Having you on-board, I'd like to ask you ... a question. I could not find a detailed ... on what is memory and I/O contention in "physical" terms. ... memory areas.

    I'd like to understand this ... problem fully before I start to design and ...
    micapolos micapolos May 2007 Emulators
  • Growing up... Jasmin supports 128/+2 nowHi, all. New version of Jasmin is available (v0.11). It supports ZX Spectrum 128 and ZX Spectrum +2 models. Try it [URL="http://www.dustedpixels.co…

    ... things like IR contention and I/O port contention, neither of which ... (at) shadowmagic.org.uk) and I'll send you the version ...
    Philip Kendall Philip Kendall May 2007 Emulators
  • Question about digitized sound and videoI searched the forums and couldn't find the answer, so here it goes. Regarding digitized sound: I remember reading an article long ago about a vid…

    ... divip_let_forever_be.zip[/url]
    I can't guarantee it'll ... )

    Unfortunately I only seem to have a ... code / notes / tools I used to create it, but ... from the DivIDE's I/O port and outputting them ... />
    Incidentally - and I can't remember if it ...
    gasman gasman May 2007 Development
  • "Add Watch" Debug for EmulatorsHi, I am working on completing a JSW-style game that I started in 1991. Although programming using TASM and Spectaculator is far easier than on th…

    ... tricky when breaking on port I/O as it uses a reverse ... logic, but I believe you can use things ... ) and wotnot.

    However, I don't think it emulates ...
    icabod icabod June 2007 Emulators
  • Ram Turbo InterfaceHi all, Can any one tell me if the Ram Turbo Joystick Interface is compatible with Kempston Joysticks? Or are both the Joystick ports Sinclair 1 and…

    ... to 0) also provides the I/O responses for the Kempston interface ...
    Regarding other interface compatibilities, I don't think its NMI ... for that matter). However, I have seen circuit diagrams for ... state of A5 during an I/O read. If similiar address decoding ...
    Phu Phu June 2007 Hardware
  • R: Tape loading error... R?What did the R: stand for? Retry? Ruined? Re-record not faid away? Always wanted to know this when I was a niper.

    I think the hardest one to ... working with pure basic allone. I can understadnd that for some ... /> [indent]
    [b] J: Invalid I/O device[/b]

    That ... /> and
    [indent]
    [b]O: Invalid stream[/b]

    Scottie_uk Scottie_uk July 2007 Sinclair Miscellaneous
  • CpmHi all, Some years ago I used CPM on the +3. IS CPM available for download these days? If not then I have no problem in paying for it. I would lik…

    ... , and multiple disk block I/O.

    I suspect these were more ...
    Matt_B Matt_B July 2007 Development
  • +2B problem stillHi all, I have a spare +2B that still dont work. Richard kindly sent me 4 x 4464 ram chips but the +2B still dont work I have swapped over both ROM`s…

    [QUOTE=DEATH;205876]I wonder if Phu has any - ... tenner each![/QUOTE]

    I'm afraid not.

    i.e. the Z80 bus comes ... out, along with all the I/O lines, the ROM chip selects ... from a +3/+2a that I had none of in my ...
    Phu Phu July 2007 Hardware
  • I.P. Addressable equipmentThis is an appeal to the circuit board guys. One of my projects currently at work is to research the viability of making some of our products I.P. Ad…

    ... to control one of the I/O lines to in turn tickle ...
    Winston Winston July 2007 Chit chat
<1…18192021222324…34>

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