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Issue One 'Dead Cockroach' chipI recently got hold of an Issue One spectrum, and I started wondering: is the dead cockroach chip required due to a flaw on the PCB, or is it really …
... I started wondering: is the dead cockroach chip required due to a ... -
Is this the infamous Dead CockroachCan anyone help me. I have an issue two spectrum that I want to list on ebay, but I want to know if this has the dead cockroach ULA fix. I would have…
... know if this has the dead cockroach ULA fix. I would have ... -
Issue 2 with 5C102E + cockroach on eBay(Posted here and not sales as it's not mine :)) Came across [URL="http://www.ebay.co.uk/itm/151225493166"]this[/URL] earlier - early Issue 2 board, …
... , complete with 5C102E ULA and dead cockroach. Looks from the ad like ... -
Dark Screen, non working 48k Spectrum (rubber key)I have an issue 1 (I think) "dead cockroach" 48k Spectrum. On power up I get a dark screen and the machine is unusable - see pics. Any ideas on the…
... an issue 1 (I think) "dead cockroach" 48k Spectrum.
On ... -
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…
... bit is to add a "dead cockroach" modification, wire up the ... at +5v.
2. Dead cockroach.
This is needed because ... going from /ROMCS to the dead cockroach. Pin 20 will receive ... the output of the dead cockroach, in other words the product ... -
ULA 6C001EX-7Last night I visited a friend of mine and had a look at the ULAs in his Spectrums. He has a 5C102E 8220 in a 16K issue one, a 5C112E 8237 in a 16K is…
... was evidence of where the dead cockroach had been), and a 6C001E ... -
Timex contended memory timings, the TS2068 kludge board and EXROM at $4000 - $7FFFI haven't seen this documented anywhere yet so I thought I'd share my findings. I've been investigating contended memory timings on the Timex Sinclai…
... in every TS2068. Like the dead cockroach it consists of a 74LS00 ... -
Faulty Issue 1Hi all, thought I'd document my efforts in getting another speccy working. I've never done this before so please bear with me... I recently took a p…
... be an upgraded 16K speccy, dead cockroach with 32K Ram pack installed ... -
Questions for CliveFollowing on from the meaning of zx thread - if you could ask Clive one question, what would it be?
Clive, so who the hell came up with that "dead cockroach" modification?
And why did all my C64-owning classmates just refer to you as an old bald man in "Split Personalities" because they had no clue as to who you are? -
Any interest in new low-cost mass-storage interface with 512K RAM?I've recently added support to ResiDOS and the +3e ROMs for SD/MMC card interfaces; in particular, ZXMMC (which has no onboard RAM and so is only sup…
... few unforeseen problems and a "dead cockroach"-style board has been added ... -
Any interest in new low-cost mass-storage interface with 512K RAM?I've recently added support to ResiDOS and the +3e ROMs for SD/MMC card interfaces; in particular, ZXMMC (which has no onboard RAM and so is only sup…
... few unforeseen problems and a "dead cockroach"-style board has been added ... -
Issue 2 Board - CPU 'Patch'I've been wondering why my issue 2 board has been kicking out this signal when powered up... [IMG]http://www.drumfu.com/ResizedDuffIssue2.jpg[/IMG] …
... edition on page 41 - "The 'Dead Cockroach' Issue 1"... -
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…
... date code obscured by a dead cockroach (of the transistor kind), made ... -
I bought my first ZX Spectrum 48k, now what ?Hi guys ! I recently go to Brussel in Belgium and found a ZX Spectrum at a "flea market" (sorry, I don't the correct word for that, let's call it a …
... on Issue 1's, the 'dead cockroach' modification did make it to ... -
I bought my first ZX Spectrum 48k, now what ?Hi guys ! I recently go to Brussel in Belgium and found a ZX Spectrum at a "flea market" (sorry, I don't the correct word for that, let's call it a …
... on Issue 1's, the 'dead cockroach' modification did make it to ... -
Issue 2 issue (...)Just acquired an issue 2 Spectrum 48 K, selled as working board, not working keyboard. Before testing it with a psu I opened the case and discovered …
... that ULA5 needed the added 'dead cockroach' chip (in both Issues 1 ... -
zx spectrum ULAis the ULA in the 16K the same as in the 48K could you take the 16K ULA and place it in a 48K I ask this because i have a speccy thats dogy with th…
... were faulty and had a "Dead Cockroach" circuit added, but this only ... -
Can someone identify thisSorry if it's something extremely obvious but this is the first time I've had my hands on a Spectrum in about 20 years (thanks eBay) and although som…
... . Maybe this is the famous 'dead cockroach' circuit?
Happen to ... -
ZX Spectrum 48K,issue two - can't get it repairedI have an issue 2, which has some weird very small PCB hanging over the Z80. Some wire go to various places on the big PCB, two go to connections 36 …
... PCB is the well known 'dead cockroach'.
Looks like you don ... -
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…
... to find space for the dead cockroach, although the IO transistor mod ... -
ZX Spectrum 48K,issue two - can't get it repairedI have an issue 2, which has some weird very small PCB hanging over the Z80. Some wire go to various places on the big PCB, two go to connections 36 …
And what does the dead cockroach do? I have another issue ... , I need to desolder the cockroach PCB and insert a spare ... -
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…
... to find space for the dead cockroach, although the IO transistor mod ... between releases.
The cockroach modification tweaked one or two ... -
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…
... and Sinclair.
The dead-cockroach was added to the second ... -
Is this the infamous Dead CockroachCan anyone help me. I have an issue two spectrum that I want to list on ebay, but I want to know if this has the dead cockroach ULA fix. I would have…
What number is the ULA?
the Dead cockroach is associated with a particular version of the ULA. -
Is this the infamous Dead CockroachCan anyone help me. I have an issue two spectrum that I want to list on ebay, but I want to know if this has the dead cockroach ULA fix. I would have…
I think that the dead cockroach modification was only required for ... this does not have the dead cockroach. The earliest datecode I have ... -
Is this the infamous Dead CockroachCan anyone help me. I have an issue two spectrum that I want to list on ebay, but I want to know if this has the dead cockroach ULA fix. I would have…
... ;521854]I think that the dead cockroach modification was only required for ... this does not have the dead cockroach. The earliest datecode I have ... -
Is this the infamous Dead CockroachCan anyone help me. I have an issue two spectrum that I want to list on ebay, but I want to know if this has the dead cockroach ULA fix. I would have…
... nicknamed "the spider" or "the dead cockroach" - due to timing error in ... -
Is this the infamous Dead CockroachCan anyone help me. I have an issue two spectrum that I want to list on ebay, but I want to know if this has the dead cockroach ULA fix. I would have…
... .ebay.co.uk/SINCLAIR-SPECTRUM-Dead-Cockroach-Low-Serial-V-RARE-/260759661023 ... -
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…
... /> Modulator is 8217
Has dead cockroach mod.
Cost ?75 boxed ... -
Hardware and software on ebayPicked up a few issue 1's and i found an issue 2 with them so put it on ebay. Not like any issue 2 i've ever seen [url]http://cgi.ebay.co.uk/ws/eBay…
... an issue 2 with a dead cockroach, I've seen claims of ...
