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contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... .farnell.com/lattice-semiconductor/gal16v8d15lpn/cmos-gal-eepld-16v8-dip20-5 ... /lattice-semiconductor/gal16v8d-25qpn/ic-cmos-gal-eepld-16v8-dip20-5v ... -
contended memory...so memory contention on the toastrack and the grey +2 is in the wrong place compared to the documentation, yet the +2a/b and +3 it is in the correct …
... .farnell.com/lattice-semiconductor/gal16v8d15lpn/cmos-gal-eepld-16v8-dip20-5 ... /lattice-semiconductor/gal16v8d-25qpn/ic-cmos-gal-eepld-16v8-dip20-5v ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
The CMOS Z80s work fine in a 48K Speccy, I have a couple with one fitted (actually, also a 128K machine) to replace Z80s with bad M1 lines. -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
[QUOTE=Winston;527210]The CMOS Z80s work fine in a ... -
Amperage drastic reduction in a rubber 48KWell, I am now with the approach of a drastic reduction ZXSpectrum amperage. As a first step would change the Z80 processor for other (Z80C). Unfortu…
... be an SRAM, Z80 a CMOS version, and you might try ... to replace ROM with a *CMOS* EPROM - dunno if that would ... -
RAND USR that doesn't work in emulators and clonesEons ago, I "discovered" a strange RANDOMIZE USR. This is it: [b]RANDOMIZE USR 46578[/b] Using it on a genuine ZX Spectrum rubber key or Plus model,…
... last one is a 20MHz CMOS version. Both from Zilog.
[B]Zilog Z0840020PEC. CMOS Z80 CPU, 20MHz[/B]
Official release of new K-MOUSE 2008 interface[url]http://velesoft.speccy.cz/kmturbo2008-cz.htm[/url] This is official release of new K-MOUSE 2008 interface. New layout, design, new schematic. …
... .farnell.com/xilinx/xc9572xl-10pcg44c/cmos-isp-cpld-9572-plcc44-3 ...I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…
... /> Oh, and check the "clear CMOS" jumper on the motherboard, if ...I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…
... /> Oh, and check the "clear CMOS" jumper on the motherboard, if ...ZX Spectrum 48K clone and test resultsHi! This is my first post, so, first of all, I'd like to say hello to the whole community! I am Alessandro Dorigatti from Italy and I'm developing …
... Zilog Z84C0020; this is a CMOS and, accordingly to the document ...Sam Coupe clonesAnybody know of any Sam Coupe clones? If they are available, are their any available to buy at the moment? Should of posted this in hardware. Sorry,…
... SAM COUPE
- real Z80CPU (CMOS Z80CPU 20MHz)
- better compatibility ...Dell CMOS batteryHi folks Quick question for the techie types on here. My mum and dad have a Dell Dimension C521 and it needs a new CMOS battery by the looks of thi…
... &sr=8-2]BIOS CMOS Backup Battery for IBM ThinkPad ...Challenge Sprint 4x tape recorderHi, I noticed a [url="http://www.worldofspectrum.org/infoseekid.cgi?id=1000051"]Challenge Sprint[/url] on eBay, and checked out the WoS entry for it…
... part, as it has three CMOS inverters that can be externally ...48k to 128k upgrade - problemsHi friends! I built 128k upgrade according to the [url]http://hw.speccy.cz/128krebuild.html[/url]. After I powered on my Speccy it said hello with s…
... will replace it again with CMOS as soon as I get ...Gauging interest: ZX EvolutionHi everyone. First of all I would like to introduce myself, since this is my first post. My name is Conrad, I'm from Vancouver, BC, Canada, and I hav…
... (NVRAM) and Real Time Clock (CMOS);
[*] emulation of physical disk ...Merging romsHello, I want to flash an eprom with two roms so I can make a speccy be able to have a dual rom using an external switch. I thought i had it right b…
I had rather incorrect voltage levels than no voltage at all.
Maybe faulty cmos buffers.The SAM CoupeDoes anyone own one of these? I remember being jealous of a friend who bought one of these machines which had a disk that made the system compatible …
... /> Old Z80B will replace by CMOS Z80(20MHz version).
As ...MB02+IDE aliveLast weekend I finished soldering and testing my MB02+IDE. All items work perfectly on +2 grey, on +2A, on 128k heatsink and on 48k Issue2 and 3b tes…
... reset logic for possibility use CMOS Z80DMA. CMOS DMA(plcc44) contain pin ... reset. DIP40 version of CMOS DMA is pin compatible with ... CPU tacts(or more) then CMOS DMA active automatic reset. See ...Making a Zx Spectrum betterIs there anyway to make my Grey ZX Spectrum more power efficient and more reliable from the original you get. What I mean is we all know the ZX Spec…
... the z80 with a modern CMOS chip, but anything else is ...Harlequin clone...PCB manufactured!Using Chris Smith's detailed schematics and project notes from the Harlequin... a Speccy fan in the United States by the name of Don (Superfo) has de…
... logic and memory is all CMOS as will be a new ...ZX Spectrum not working... issue 4S?Hi, I've bought a "new" broken ZX Spectrum +. The idea was to put an harlequin board inside, but for the moment I'm trying to put it in working order…
... of them are NMOS, no CMOS parts) and some other unidentified ...4116 SRAM replacement (and ULA timings).As mentioned in another thread, I have spent quite a lot of time experimenting with different circuits and components for using a static RAM IC to re…
... (in other words, exactly a CMOS inverter). All you need is ...Microdrive units with weak (not dead) ULAs...Hi everybody, I've got a Microdrive unit here. It didn't work. It does now (actually, it was the ribbon had broken and the ground had lost contact, …
... small "cockroach board" with a CMOS buffer should do the job ... gate tri-state TTL compatible CMOS buffer, just wire the enable ...Shadow registers.I assume it's faster to transfer the registers to the shadow registers rather than using the stack? Let's say that I want to temporarily preserve the…
... z80, in particular the later CMOS version, will work with these ...I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…
... BIOS settings: sometimes by default (CMOS cleared / new BIOS flashed) some ...I might try building a barebones PC.Our Packard Bell iMedia 5077 is literally on its last legs. Every time it is switched on something doesn't work, usually it is the sound, sometimes i…
... BIOS settings: sometimes by default (CMOS cleared / new BIOS flashed) some ...My Pc doesn't work in my office...it's a strange, thing, he works perfectly at home, and other places, but for 2 weeks now, every time I try to use it in the office (the place i need …
... BIOS setup screen, sometimes my CMOS memory is gone as well.My Pc doesn't work in my office...it's a strange, thing, he works perfectly at home, and other places, but for 2 weeks now, every time I try to use it in the office (the place i need …
... steps above but remove the CMOS battery, wait a while and ...4116 replaced by 4164 - "Noisy" paper?After I replaced my 4116's with 4164's and hooked them up to +5V, disconnected -5V and +12V, I have what looks like vertical lines in the paper, like…
... "interference" can happen with a CMOS Z80 CPU (which has much ...
