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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…
... if I should substitute a NEC CPU in a grey +2 ... anyone else had problems with NEC CPUs inside ZX Spectrum. Some ... a divIDE. After substituting the NEC CPU with a Zilog one ... would have to destroy the NEC CPU while cutting it out ... -
ANN: Spectaculator 6.25What's new in version 6.25 ========================== o After a long discussion in CSS, it seems all 48k and 128k+ ZX Spectrums are not made equal. …
... default, it's set to NEC 780-C/SCS which runs ... -
nec780 vs z80aHi everyone! Got a 48k issue 2 board with nec780 with a mts2369 at its back.(spider?) Between pin 11 of the cpu and pin 14 of ic 23 theres a resis…
... switch between hitachi cpus and nec's. If i replace the ... links open(nor hitachi nor nec)?
Do i ... ="http://homepage.esoterica.pt/~nx0xgv/nec.JPG"]http://homepage.esoterica.pt ... /~nx0xgv/nec.JPG[/url]
Best ... -
Note to SpiranthoIan Whilst playing about with Frankenspec, I have discovered that the 41256 memory IC works as well as a 4164 (etc) in the upper RAM block of a 48K …
... for OKI L RAM, the NEC chips worked just as well ... -
+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, …
... 3,5" PC floppy drive (NEC) to ZX Spectrum +3 (with ... -
Spectrum 128K - Needs Your HelpI have a Spectrum 128K (with the external heatsink on the RHS) it is a 1985 Version 6K mainboard, I got it out of the loft the other day and it wont …
... ?)
The mainboard has 16 NEC D1164C-15 RAM chips (soldered ... -
Problem with replacing all upper memory with 4164 chipsGuys, i have a problem with the high memory of a 4B issue. At first the board had OKI chips for high memory and one of them was faulty. Since its ea…
... its easier, i got some NEC D4164C -3 chips and changed ... -
sinclair zx spectrum issue 6a (again) - how to repairHi All, Is there someone who may explain what these jumpers can be used for. [url]http://forest.no-ip.org/repair/jumpers.gif[/url] <- this is from …
Hi All,
Is there someone who may explain what these jumpers can be used for.
[url]http://forest.no-ip.org/repair/jumpers.gif[/url] -
DivIDE+ and 128K HeatsinkI got my DivIDE+ yesterday and i tried it on a 48K+ at first, it worked marvelously on it, no problems at all. Today i desided to try it on my 128 H…
... brand new one on the NEC brand (D708C-2) that i ... rom, i tried a spare NEC D708C-1 Z80 that i ... -
MEMPTR tests for emulator authorsI've recently been completing my MEMPTR implementation and have written a series of tests in [URL="http://homepage.ntlworld.com/mark.woodmass/z80test…
... compared against those from an NEC D780C-1 Z80 chip, but ... -
Faulty M1 pin on a Z80 made from SGS?It's the second time I have come across this: a Spectrum that seems to work ok, but if I attach an Interface 1 or a DivIDE to it, it behaves as is no…
... from SGS, not Zilog or NEC. So, didn't SGS implement ... -
Computer & Video Games Book of Adventure, TheBelow is the spectrum listing from the "[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=2000078"]Computer & Video Games Book of Adventure, The…
Below is the spectrum listing from the "[URL="http://www.worldofspectrum.org/infoseekid.cgi?id=2000078"]Computer & Video Games Book of Adventure, The[/URL]" book.
I've had to add line 2 as there was a GO SUB 2 in the rest of the listing & ... -
What bands have you seen live?Have seen: Rick Wakeman - Inverness - 1989 AC/DC - Wembley Arena - 1990 AC/DC - Manchester MEN - 2000 Rush - Wembley Arena - 1990 Fish - London As…
... - 2004
Iron Maiden - Birmingham NEC - 2006
Status Quo - Westonburt ... -
23-128Hi, while repairing my issue 3 48, i have realised that the 23128 rom is borked. As i see it doesn't quite have the same pinout as the 27128, (Acc…
... programmed Spectrum Rom? preferebly the NEC version? -
monitor troublehello I have been havig trouble with my monitor(NEC Multisync 75F),for some time now and i need some help.I have had this monitor for 8 years,and th…
... havig trouble with my monitor(NEC Multisync 75F),for some time ... -
Help! Info required!I've just come back from the auctions today with a japanese NEC PC-9801 laptop that I bought for ?3.00 I've googled for some info, and come up with…
... today with a japanese
NEC PC-9801 laptop that I ... -
Spectrum Serial Numbers Wanted!![b]This post updated Sept. 26, 2013[/b] As far as I know, the serial numbering system for the Spectrum has never been fully worked out. For the p…
... [Datecode]
CPU : [Zilog / NEC / Sharp] [ProductCode] [Datecode]
... ROM : [Hitachi / NEC / other] [Datecode]
DRAM : [ ... : 5C102E 8217
CPU : NEC NECD780C-1 8208
ROM ... -
DIVIDE+ and +3 Disk DriveProbably been asked before (and I'll search the forums again) but is there any possibility of using the +3 disk drive with the DIVIDE+ without a +3E …
... please (end goal is not nec. hardware)?[/EDIT]
[EDIT ... -
48 Issue 3b working but very hot ula and cpuSalve to everybody I bought from e*ay an Issue 3b 48k , fitted in a + case. Fixed the keyboard problem with a new keyboard membrane from good Rwap (w…
... is very hot and the Nec Z80 is hot too. And ... -
nec turbografx 16 top gamesHi all Just got a Turnarcade machine and am loving it! It has too many games to work through on by one - hundreds on each platform. So can anyone …
Hi all
Just got a Turnarcade machine and am loving it!
It has too many games to work through on by one - hundreds on each platform.
So can anyone offer a steer on the turbografx and which games on it are considered ... -
Ultima SeriesHi, Have any fans ever ported the Ultima series to the Sinclair Spectrum? Ultima I to VI was released for the C64 and as you all know these games ar…
... , MSX, FM Towns, Apple IIGS, NEC PC-9801, Atari ST, Mac ... -
Upgrading 16k MemoryHi All I have a fully working issue 2 16k spectrum and a broken issue3 48k spectrum (It's showing the black and white bars and some flashing blocks)…
... issue3, they are as follows: NEC D4164C-3 * 8, 74LS32, 74LS00 ... -
4164 refreshHi, I remember pondering the mystery of how 4164's seem to get properly refreshed when used as video memory, and half the answer has just popped up i…
My Issue 2 spectrum"IT'S ALIVE!!!!!" - Dr Frankenstein I got my issue 2 spectrum up and running, colours and all. I borrowed socketed lower ram from my issue 3 that is…
... new low power Z80 cpu (Nec 780008C), memory borrowed from my ...z88dk SP1 - any internal oddities?I'm just wondering if anyone knows if the Z88DK's spritelib SP1 has any oddities inside, for instance relying on specific timings, undocumented instr…
... the other more common Z80s (NEC, Zilog, SGS) that we tend ...Stealth AllRAM SpectrumHaving just received a couple of new keyboard membranes to fix a couple of machines with, the thought crossed me that I should do a special project w…
... a General Instruments or a NEC ROM, in the case of ...Issue 3 board - Free to good homeI have an issue 3 board that someone could scavenge for spares or even repair if they're willing to pay the p&p. I got it off someone on Amibay in a…
... (sort of verified working) socketed NEC z80 and socketed upper ram ...Spectrum +2A/B - CPU affects loading??Hi everybody, Here's something I don't understand. A +2A came in the other day, and it was working fine, but wouldn't load some tapes. OK, thinks I…
... changing the CPU with an NEC D780C as these CPUs have ...ZX mask ROM chips curiosityJust out of curiosity... what willl happen if we have a Hitachi ROM and the bridging onboard is on the N positions (for NEC)? While I was searching …
... on the N positions (for NEC)?
While I was ... issue that was set for NEC rom but the chip (socketed ... SINCLAIR seem to stand for NEC and HITACHI respectively.
