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DivIDE on Spectrum +3Hi all, Is it possible to use the DivIDE on the Spectrum +3 in 128K mode? I have the 'A' jumper set on the board, but my +3 resets into 48K mode wit…
... ULA, or were they using CMOS or NMOS by then?) -
NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…
[QUOTE=ingo;337988]it was a NEC-D780C-1[/QUOTE]
D780 = Z80
D780-1 = Z80A
The 'C' means that it is younger than my NEC catalogue...
(Probably Cmos instead of Nmos, could that be a clue?) -
NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…
... my NEC catalogue...
(Probably Cmos instead of Nmos, could that ... maximum amount of time. For Cmos versions, this is indefinite (static ... ). Also Nmos outputs aren't Cmos outputs. They should honour TTL ... -
NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…
... obviously far inferior to the CMOS versions - I had one driving ... -
NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…
... specs for both Nmos and Cmos parts, and look for "clock ... ]minimum[/I] clock frequency. For Cmos Z80, these are both specified ... -
NEC CPU - problem?I wonder if I should substitute a NEC CPU in a grey +2. Does anyone else had problems with NEC CPUs inside ZX Spectrum. Some time ago I had a Spectr…
... specs for both Nmos and Cmos parts, and look for "clock ... -
Recommended book (in WOS archive) for learning Z80 instructions?I have a very vague knowledge of a few Z80 instructions, but would like a comprehensive reference book. Can anyone recommend a decent book in the WO…
... />
* (Although only made in CMOS today, rather than NMOS, but ... this doesn't matter - the CMOS Z80 works just as well ... -
What we gotI moved house and I have setup my Spectrum gear, I was looking at all that I have and was thinking what else do others have in there collection? Ok …
...
A few Z80s (mostly CMOS)
Peripherals
DivIDE ... -
computer wisdom neededany ideas? my computers dying, yesterday my computer developed a fault whereby itd keep freezing up, it did it on my XP and ME partitions and even o…
... haven't already, clear the CMOS by popping out the battery ... -
computer wisdom neededany ideas? my computers dying, yesterday my computer developed a fault whereby itd keep freezing up, it did it on my XP and ME partitions and even o…
... haven't already, clear the CMOS by popping out the battery ... ]
it is a new cmos battery i put in a ... -
General question about electronics I guess... (128k +2a)[Short question] When I very slightly put my finger on top IC15 on my +2A the TV picture becomes crazy and the spectrum acts if it just resets I don…
... 74HC/HCT series, it's CMOS. Unlike the old TTL logic ... they replace, CMOS has very high impedance inputs ... -
The Goldfinch updates thread([url=http://www.worldofspectrum.org/forums/showthread.php?t=25034]original announcement thread here[/url] - I figured it was worth starting a new to…
... However, many chips, especially CMOS have a higher threshold voltage ... different again, lower than CMOS, with the guaranteed logic ... there is also TTL compatible CMOS which has these characteristics - ... worst instances (non-HCT CMOS) the Z80 probably starts ... -
Any help appreciatedHello, I notice that people have posted their PC related hardware and software woes on this forum before and the more technically minded among you h…
... . you've already cleared the CMOS which probably would have been ... first. however, i clear the CMOS by removing the battery for ... -
Bastard!!!!!!!!!!last night i blew my new puter up :( stuck an old rom cd in and the fucker exploded inside my new puter :( now it wont boot up, it wont even find th…
you did already clear the CMOS by popping out the battery for ?hour? -
Bastard!!!!!!!!!!last night i blew my new puter up :( stuck an old rom cd in and the fucker exploded inside my new puter :( now it wont boot up, it wont even find th…
[QUOTE=freddyhard;389479]you did already clear the CMOS by popping out the battery for ?hour?[/QUOTE]
nope
sadly as i said it being brand new and still under warrenty i dont want to open it and invalidate the warrenty -
PC Problem #3234 NO VIDEO INPUTAround a while back I booted my computer and got "NO VIDEO INPUT" on my monitor, the computer was working (lights etc...)..just bios was not kicking …
... . In any case, removing the CMOS battery automatically resets the bios ... -
PC Problem #3234 NO VIDEO INPUTAround a while back I booted my computer and got "NO VIDEO INPUT" on my monitor, the computer was working (lights etc...)..just bios was not kicking …
... Easy:
Switch out the CMOS battery for a new one ... -
PC Problem #3234 NO VIDEO INPUTAround a while back I booted my computer and got "NO VIDEO INPUT" on my monitor, the computer was working (lights etc...)..just bios was not kicking …
... Easy:
Switch out the CMOS battery for a new one ... -
winston's diagnostics boardHi Winston, I've recently built your diagnostics board on project board and am having huge problems getting it running. I've been pulling my hair ou…
... this because the inverter is CMOS and as such, when the ... -
Trying to repair a 128K (heatsink)I've bought another ZX Spectrum 128K (heatsink model), but unfortunately the last owner did not tell me it did not work.... Because this Speccy also…
... fast inverter: 74AS04, 74ALS04 or CMOS parts like 74AC04, 74ACT04. Some ... -
IDE controllerRecent time I have problems with my ide hdds. I turn on the computer, and the bios won't detect both primary ide drives. Then I open case, pull out a…
... they stopped altogether. clearing the CMOS by popping out the battery ... -
IDE controllerRecent time I have problems with my ide hdds. I turn on the computer, and the bios won't detect both primary ide drives. Then I open case, pull out a…
No new devices added for ages, I just pulled off the case power supply, then after unsuccessfull swapping for other one, I've returned it back. I am going to clear cmos.. -
IDE controllerRecent time I have problems with my ide hdds. I turn on the computer, and the bios won't detect both primary ide drives. Then I open case, pull out a…
Depending on the age of the mobo, it could be a simple case of replacing the CMOS backup battery. It may be failing, causing the BIOS to reset, "forgetting" your hardware settings. -
IDE controllerRecent time I have problems with my ide hdds. I turn on the computer, and the bios won't detect both primary ide drives. Then I open case, pull out a…
... simple case of replacing the CMOS backup battery. It may be ... -
Remove +12 Volt itemsWhich items can be removed on a ZX48K issue 4b PCB if I don't need the +12 Volt? Micky
... replaced ROM or Z80 with CMOS versions yet (or touched the ... -
EPROM servicesAnyone ever heard of these people?. I bought a Spectrum add-on from ebay recently. There is an edge connector splitter, i.e. enables you to plug tw…
... replace the ROM with a CMOS EPROM and fix NMI that ... -
Spectrum+ from ebayI recently received a Spectrum+ that I bought off ebay for about ?10 including postage. I have not tested it yet but had a quick look inside through …
... normal use, usually not a CMOS part back then (read: not ... -
Spectrum+ from ebayI recently received a Spectrum+ that I bought off ebay for about ?10 including postage. I have not tested it yet but had a quick look inside through …
... by static. The difference from CMOS is they only have the ... N-channel MOSFETs (CMOS has both P-channel and ... /> Of course by then (both CMOS and NMOS parts) had some ...
