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Search Again :: Adv Search 783 results in 0.001s
<1…13141516171819…27>
  • 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…

    [QUOTE=Johan1973;670457]Ah, you are right. But then, I have also used cmos logic gates as replacements for some 74xxxx series as well, and not had any problem.[/QUOTE]
    Use is not appropriate series chipset is like playing Russian roulette.
    Black_Cat Black_Cat December 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…

    ... inputs is okay (within HC CMOS fan-out, drive level is ... /> "TTL" output to HC CMOS may or may not work ... to register as a HC CMOS logic high. Depending on ... resistor or use a HCT CMOS chip.

    Note ... enough level for the HC CMOS input.

    [B ...
    1024MAK 1024MAK December 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…

    ... inputs is okay (within HC CMOS fan-out, drive level is ... /> "TTL" output to HC CMOS may or may not work ... to register as a HC CMOS logic high. Depending on ... resistor or use a HCT CMOS chip.

    Note ... enough level for the HC CMOS input.

    [B ...
    Black_Cat Black_Cat December 2012 Hardware
  • ZXDS 1.1.0Hello, once again a [URL="http://zxds.raxoft.cz"]new ZXDS version[/URL] is out. The major changes are the custom ROM support and Beta 48 emulation, …

    ... do because of the added SCF/CCF and MEMPTR emulation, OTOH ...
    Patrik Rak Patrik Rak December 2012 Emulators
  • Altera CPLD vs Xylinx FPGAI will dig into the world of FPGA's, mainly to find something that can replace one or more GALs for my current and new projects. And it's never bad t…

    ... -macro-cells-100mhz-0-35um-cmos-technology-3-3v-44-pin ...
    Zetr0 Zetr0 January 2013 Hardware
  • Want a new old PC.Does anyone know of any good place that sell slightly older desktop PC's very cheap? The motherboard in mine is on its way out. Think there is a cr…

    ... removed, no HDD/DVD etc, CMOS erased. Maybe some swapping of ...
    RetroTechie RetroTechie January 2013 Chit chat
  • Want a new old PC.Does anyone know of any good place that sell slightly older desktop PC's very cheap? The motherboard in mine is on its way out. Think there is a cr…

    ... removed, no HDD/DVD etc, CMOS erased. Maybe some swapping of ...
    FrankT FrankT January 2013 Chit chat
  • 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 …

    ...
    ld a, 255
    scf
    call $0556
    [/CODE ...
    antoniovillena antoniovillena January 2013 Brand new software
  • A new site for an old projectThe 'Interface 1bis' project site has been moved to: [url]https://sites.google.com/site/interface1bis/[/url] In fact, it's not only a simple relocati…

    ... bus and 1 (one) !!! standard CMOS load ( that is the CPLD ...
    Dan Antohi Dan Antohi January 2013 Announcements
  • Is this TZX OK?I'm in the middle of preserving a bunch of Danish MIAs and STPs. I'm slowly getting up to speed with MakeTZX. One tape is giving me some trouble. You…

    ... LD A,000
    23800 SCF
    23801 CALL 01366
    23837 POP IX
    23839 SCF
    23840 LD A,255 ...
    Andrew Barker Andrew Barker January 2013 MIA/STP/SDP
  • Adding TAP file contents to a Spectrum +3e DOS PartitionHello my fellow WoS'ers, This thread is a companion to a great little guide from a fellow AmiBayer [B]mnjnurney[/B] you can view his thread by [URL…

    ... ,17
    XOR A
    SCF
    CALL 1366
    RET ...
    nuggetreggae nuggetreggae January 2013 Games
  • Which type of Z80 cpu to use with ZX 48?Which type of Z80 cpu can I use with ZX 48? Only the 4 MHz cpu's or some with more MHz? Did not know if a 6 MHz cpu runs in a ZX 48 with 4 MHz. Mic…

    ... />
    Needess to say a CMOS version is much better power ...
    RetroTechie RetroTechie January 2013 Hardware
  • Which type of Z80 cpu to use with ZX 48?Which type of Z80 cpu can I use with ZX 48? Only the 4 MHz cpu's or some with more MHz? Did not know if a 6 MHz cpu runs in a ZX 48 with 4 MHz. Mic…

    ... repaired using modern 8Mhz version (CMOS) :-)

    Bye

    Jose_Leandro Jose_Leandro January 2013 Hardware
  • Which type of Z80 cpu to use with ZX 48?Which type of Z80 cpu can I use with ZX 48? Only the 4 MHz cpu's or some with more MHz? Did not know if a 6 MHz cpu runs in a ZX 48 with 4 MHz. Mic…

    ... the newer year 2000 released CMOS variants - I bought 5 initially ...
    Zetr0 Zetr0 January 2013 Hardware
  • Which type of Z80 cpu to use with ZX 48?Which type of Z80 cpu can I use with ZX 48? Only the 4 MHz cpu's or some with more MHz? Did not know if a 6 MHz cpu runs in a ZX 48 with 4 MHz. Mic…

    ... " if you're using a CMOS Z80 - this is basically due ... the lower impedance of the CMOS Z80 outputs, sometimes you get ...
    Winston Winston February 2013 Hardware
  • Which type of Z80 cpu to use with ZX 48?Which type of Z80 cpu can I use with ZX 48? Only the 4 MHz cpu's or some with more MHz? Did not know if a 6 MHz cpu runs in a ZX 48 with 4 MHz. Mic…

    I use a Zilog Z84C0006PEG CMOS 6 MHz Z80 cpu. Works very well.


    Micky
    [B]
    [/B]
    -Micky -Micky February 2013 Hardware
  • maximum addressable RAM for a Z80 using bank switching?What is the maximum addressable RAM for a Z80 using bank switching? The Enterprise64 home computer could address up to 4MB, is this the limit for a …

    ... at its maximum, for Zilog CMOS devices, not counting FPGA/ASIC ...
    mcleod_ideafix mcleod_ideafix February 2013 Hardware
  • Will disc drive this work for a +2B?Morning all, I was looking around ebay and saw this, the desprition says it will fit a +3 but also mentions a 34 pin edge connector. My +2B has two e…

    ... .co.uk/itm/1PCS-SED9420C-CMOS-Data-Separator-for-FDD-/320903868323 ...
    The_Bert The_Bert 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…

    ... device used is a 2764 CMOS EPROM of 65536 bit cells ...
    zub zub February 2013 Hardware
  • Assembler v Machine CodeHi. I've been looking at a lot of the code examples in the Development section and can see that Assembler is the way to go. However, I was wondering …

    ... IX,4000/ LD A,FF/ SCF/ CALL 0556/ RET) is easy ...
    jamorski jamorski March 2013 Development
  • Assembler v Machine CodeHi. I've been looking at a lot of the code examples in the Development section and can see that Assembler is the way to go. However, I was wondering …

    ... OVER with the use of SCF

    Other opcodes I ...
    Dr BEEP Dr BEEP March 2013 Development
  • Tracking down the last few bugsHi all. My emulator nears completion. Like many, I have tested against the FUSE suite of tests, and my emulator passes every one. However, I still h…

    ... taking account of the CCF/SCF & MEMPTR behaviour ( yet).
    johara johara March 2013 Emulators
  • Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…

    ... . I heard some tidbit about CMOS technology being employed in that ...
    TK90XFan TK90XFan March 2013 Emulators
  • Brazilian TK90X and TK95SpecEmu provides explicit support for Brazilian TK90X. Other emulators provide indirect support (perhaps the "Spectrum 48K NTSC" option in Fuse?). Al…

    ... . I heard some tidbit about CMOS technology being employed in that ...
    zub zub March 2013 Emulators
  • The "best" Z80?What's the best Z80 for Spectrums? I know there are differences between brands (Nec, Zilog, Thomson) and technologies (CMOS, NMOS), so what Z80 woul…

    ... have heard from Winston, the CMOS variant should be the best ... /> That said, I've used CMOS chips with no apparent issues ...
    mcleod_ideafix mcleod_ideafix April 2013 Hardware
  • The "best" Z80?What's the best Z80 for Spectrums? I know there are differences between brands (Nec, Zilog, Thomson) and technologies (CMOS, NMOS), so what Z80 woul…

    ... as I know Zilog Z80 CMOS CPU don't have bad ...
    velesoft velesoft April 2013 Hardware
  • The "best" Z80?What's the best Z80 for Spectrums? I know there are differences between brands (Nec, Zilog, Thomson) and technologies (CMOS, NMOS), so what Z80 woul…

    [QUOTE=velesoft;691696]Yes, Zilog Z80 NMOS CPU have often problem with M1 line. But as I know Zilog Z80 CMOS CPU don't have bad M1[/QUOTE]

    Is there any way to distinguish among NMOS and CMOS Z80?
    TK90XFan TK90XFan April 2013 Hardware
  • The "best" Z80?What's the best Z80 for Spectrums? I know there are differences between brands (Nec, Zilog, Thomson) and technologies (CMOS, NMOS), so what Z80 woul…

    ... to distinguish among NMOS and CMOS Z80?[/QUOTE]

    Yes ... 0 to port BC, but CMOS CPU send value 255 to ... NMOS CPU, white border sign CMOS CPU.
    velesoft velesoft April 2013 Hardware
  • The "best" Z80?What's the best Z80 for Spectrums? I know there are differences between brands (Nec, Zilog, Thomson) and technologies (CMOS, NMOS), so what Z80 woul…

    ... 0 to port BC, but CMOS CPU send value 255 to ... NMOS CPU, white border sign CMOS CPU.[/QUOTE]

    Interesting ...
    Zup Zup April 2013 Hardware
  • The "best" Z80?What's the best Z80 for Spectrums? I know there are differences between brands (Nec, Zilog, Thomson) and technologies (CMOS, NMOS), so what Z80 woul…

    ... /> Z84[B]C[/B]0006PEC = CMOS Z80B

    Usually ... number, but whether that means CMOS depends on manufacturer. Datasheets will ... in what period NMOS & CMOS products were both in production ... some date, there were no CMOS parts. Beyond another date, all ...
    RetroTechie RetroTechie April 2013 Hardware
<1…13141516171819…27>

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