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Broken +3I have noticed that some members on this forum prefer to repair Spectrums instead of just buying another one from ebay. I would like mine fixed at so…
... />
I did remove the Z80 from the broken +3 as ... expected as there is no CPU!!! It proves nothing to me ... the state of my original Z80 CPU? You know if this was ... -
Assembly Programming for IDIOTSOk are there any websites guides for what opcodes do in a z80 or books... but for really really thick people like me :-) Something along the lines …
... who wants to learn Z80 assembly language beyond ... to describe Zilog's Z80 CPU in detail. It will ... all the Z80 instructions with the number of CPU cycles ... explanation:
The Z80 in the Spectrum motors away ... of the legs on the Z80 CPU!!!
5 ... -
I hit an electronic jackpot!!!Hi everyone, My computer project can exceed faster than ever!! My school has no electronic or computer teachers so they have thousands of chips and …
... ]
I even got two z80 CPU's that i would LOVE ... like minimum hardware for the z80 to function?
[/QUOTE]
for an absolute minimal z80 based computer you need a ... Z80, some RAM, a ROM, and ... -
How do you do it?What's your favoured method of games creation? Basic programming? Assembler? Basic Compiler? AGD? Etc etc. I currently have a management game written…
... ++ to write C or z80 asm source and then use z88dk or ... -
DIVIDE PLUS - ZX bus protectorI make new ZX BUS PROTECTOR for use with DIVIDE PLUS interface. This is very small "convertor" for connection to new ZX BUS connector. PCB contain on…
... contacts on ZX bus / bad Z80 CPU / modified rom in your +3 ... -
DIVIDE PLUS - ZX bus protectorI make new ZX BUS PROTECTOR for use with DIVIDE PLUS interface. This is very small "convertor" for connection to new ZX BUS connector. PCB contain on…
... contacts on ZX bus / bad Z80 CPU / modified rom in your +3 ... -
What model next ?Hi All I already have two 48k rubber kyed 48k Spectrums and a Grey +2 What to get next. ZX Spectrum + ZX Spectrum 128 Toast Rack ZX Spectrum +3
... socket with pin 28 of Z80 CPU (signal /RFSH)
4) program ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... a number of unrelated Z80 projects on the web ... Most of these are using Z80 CPU's running at 20-25MHz ... hobbyist can produce a Z80 machine at a low ... much hassle considering that the Z80 is still 100% backwards ... there are there any CPU upgrades for the Spectrum ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
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A native 8-bit Z80 CPU can only "see" 64K at ... /> I believe that some modern Z80 CPU have a larger (20-bit ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... of RAM that a Z80 can use but the ... />
So if one Z80 CPU can directly use 64K and ... it possible to add another Z80 CPU specifically for graphics and ... 64K each and so CPU memory wouldn't be ... .
Does the Z80 have the same limitations with ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... ;498270]So if one Z80 CPU can directly use 64K and ... it possible to add another Z80 CPU specifically for graphics and ... x 64K each and so CPU memory wouldn't be ... been in 1984, dual Z80's and a 3.5 ... been a dual Z80 CPU computer? A separate CPU for graphics alone ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... ever been a dual Z80 CPU computer? A separate CPU for graphics alone ... for home computers, dunno about z80 but one with dual 6809 ... make some kind of addon z80 thing :D
*runs ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... />
- The maximum speed a Z80 can be clocked at for ... no need for a second Z80 CPU
- Using an FPGA ... smaller than using an original Z80 design
- It would ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... advantage to using a faster CPU.
The ... as intended on a faster CPU. Anything that uses interrupts to ... designed to work with a Z80. However, you'd really want ... software could just use the Z80 CPU. Could have a GUI running ... -
Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... software could just use the Z80 CPU. Could have a GUI running ... system then with a fast CPU and VDP :)[/QUOTE]
z80 in that case).
Z80 was though. -
Faulty Interface 1I bought a 'tested' Interface 1 on ebay the other day. Aside from the previous owner 'cleaning' the contacts with WD40!!! (bad, bad, bad eeurrgh :rol…
... 's were sold with faulty Z80 CPU ( bad M1 signal ) and as ... refusal.
Try a Z80 swap and see.
Other good oldschool computers?Hi! I'm a collector of games, and i looooooooove computers. I'm very much intrested in: -Amiga 500&1200 -Atari 8-bit -C64 -C16 -Spectrum -QL -CoCo -…
... .. which used the add on z80 cpu
[url]http://www ... games if they used the z80 on the 128 also might ...Other good oldschool computers?Hi! I'm a collector of games, and i looooooooove computers. I'm very much intrested in: -Amiga 500&1200 -Atari 8-bit -C64 -C16 -Spectrum -QL -CoCo -…
... .. which used the add on z80 cpu
[url]http://www ... a second 6502 CPU. The main use for a Z80 second processor ... games if they used the z80 on the 128 also might ... ]
Sadly not. The Z80 in the C128 suffers from ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... be cool with a 21MHz Z80 CPU, maths coprocessor and a VDP ...Recent talk of developing new SpectrumsHi all, I can see from a few threads on here that some Wossers like Vasil and Aien 8 are interested in developing more powerful Spectrums or improvi…
... is this.
* Real Z80 CPU.
* All of the "out ...What if the Government backed Sir CliveHere is a question I have always wondered about... What if the Government had backed Sir Clive back in the Eighties... That is, placed his computers …
... had it designed around a Z80 CPU...
Well, whats been ...What if the Government backed Sir CliveHere is a question I have always wondered about... What if the Government had backed Sir Clive back in the Eighties... That is, placed his computers …
... had it designed around a Z80 CPU...[/QUOTE]
Personally I ... super Spectrum based around the Z80 but that would only have ...Zx Spectrum 48k+ black screenHi A friend of mine gave me his 48k+ and when i tried to turn it on I just get a black screen of the TV. I don't have sound of the console. Where c…
... ]Where can i buy the CPU and the ULA?
[/quote ... =p3984.m570.l1313&_nkw=z80+cpu&_sacat=See-All-Categories ... ensure that the Zilog 80 CPU is a 40pin DIP package ... &_sacat=0&_odkw=z80+cpu&_osacat=0&_trksid ...Using a Z80 CPU in a 48K Spectrum?Will a Z80 CPU (which I have) work well enough in a 48K Spectrum to give me an indication as to whether the Z80A CPU in there is duff? Thanks for re…
[QUOTE=weathereye;516928]Will a Z80 CPU (which I have) work well ... as to whether the Z80A CPU in there is duff?
AFAIK, the original Z80 CPU (before the Z80A) only reached ...Using a Z80 CPU in a 48K Spectrum?Will a Z80 CPU (which I have) work well enough in a 48K Spectrum to give me an indication as to whether the Z80A CPU in there is duff? Thanks for re…
... =Metalbrain;516935]AFAIK, the original Z80 CPU (before the Z80A) only reached ... that you might get a Z80 working in a Spectrum. I ...Using a Z80 CPU in a 48K Spectrum?Will a Z80 CPU (which I have) work well enough in a 48K Spectrum to give me an indication as to whether the Z80A CPU in there is duff? Thanks for re…
... nice to know if the CPU is O.K before I ... a ULA. I have a Z80 CPU from days of long ago ...Zx Spectrum 48k+ black screenHi A friend of mine gave me his 48k+ and when i tried to turn it on I just get a black screen of the TV. I don't have sound of the console. Where c…
... =p3984.m570.l1313&_nkw=z80+cpu&_sacat=See-All-Categories ... ensure that the Zilog 80 CPU is a 40pin DIP package ... &_sacat=0&_odkw=z80+cpu&_osacat=0&_trksid ...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…
... I?ve got this Z80 CPU: ZILOG - Z84C0010PEG - CI, CPU (Z80) 10MHZ, 84C00, DIP40 ...yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
[QUOTE=Crisis;530424]
RLD (or RRD) ; 18 T-state = 30 T-state already
[/QUOTE]
RL D according to Z80 CPU User's Manual is -
RL r 8 (4, 4)
8 T-states.yeah - unix for zx spectrumI started a new hobby project. An operating system for ZX Spectrum. A unix clone. Talked to my friend about it and he asked me what if after I'm done…
[QUOTE=tstih;530439]RL D according to Z80 CPU User's Manual is -
RL r 8 (4, 4)
8 T-states.[/QUOTE]
He means RLD, not RL D ;)
