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4116 and 4164 chipsI've just found the following supplier for 4116 and 4164 RAM chips. about $0.80 each.. not bad. [url]http://www.jameco.com/[/url] It's a US site. I…
... following supplier for 4116 and 4164 RAM chips.
about $0 ... -
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…
... loading. I tried other new 4164 chips (in case one of ... when replacing OKI chips with 4164?
In D4164C -3 ... -
4164 and 4864 ChipsI have a stock of 4164, 4864 memory chips and 7805 voltage regulators if anyone needs them. Cost would be ?1.50 each plus postage for anyone on here…
I have a stock of 4164, 4864 memory chips and 7805 voltage regulators if anyone needs them. Cost would be ?1.50 each plus postage for anyone on here!
They are mainly 20ns
Rich -
4164 memoryHi all, I'm looking for 4164 memory, probably 4 chips. If you have some you willing to part with for some cash, let me know how much you want for it…
Hi all,
I'm looking for 4164 memory, probably 4 chips. If you have some you willing to part with for some cash, let me know how much you want for it + postage.
Cheers. -
Testing 4116 and 4164 chipsI have a stash of old 4116 and 4164 chips and wondered how best to test them to see if they work. I don't have a working spectrum to plug them into …
... stash of old 4116 and 4164 chips and wondered how best ... -
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…
... pondering the mystery of how 4164's seem to get properly ... there are two kinds of 4164's, one needing a 128 ... refresh.
It seems most 4164's were 128 cycle, same ... successfully refresh most varieties of 4164, Certainly the OKI, Hitachi, Motorola ... -
4116 and 4164 chip avaliableHi all, while clearing out lots of old odds and sods I have come across a fair number of old dram memory chips. I have 200+ 4164 from various manufa…
... chips.
I have 200+ 4164 from various manufactures
20 ... -
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…
... replaced my 4116's with 4164's and hooked them up ... and +12V and replace the 4164's with 4116's, the ... -
New batches of 4164 chips arrivedI have received a lot of 4164 chips today, and will probably find more. So if you need some, come and get them. Prices are found on my website: [url…
... have received a lot of 4164 chips today, and will probably ... ]http://benophetinternet.nl/hobby/vanmezelf/4164.jpg[/IMG] -
Febuary offer - 4164 ram chips: 10pcs ?9, 20pcs ?16Special febuary offer: [B]10x 4164 chips[/B]: normally 12 GBP, now for [B]only 9 GBP (11 EUR)[/B] + postage. [B]20x 4164 chips[/B]: normally 24 GBP…
... offer:
[B]10x 4164 chips[/B]: normally 12 GBP ... )[/B] + postage.
[B]20x 4164 chips[/B]: normally 24 GBP ... ]http://benophetinternet.nl/hobby/vanmezelf/4164.jpg[/IMG] -
Difference between brands of 4164 chips?I have gotten my hands on a batch of several brands of 4164 chips. Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15. Anyone knows if any type …
I have gotten my hands on a batch of several brands of 4164 chips.
Examples are NEC D4164C-3 and Mitsubishi M5K4164ANP-15.
Anyone knows if any type is preferred above the other? -
Repalce 4164 RAM by 41464Dear all, I have some amount of 41464 DRAM from old PC VGA card which are useless at the moment. I think to keep them as a spare for the upper 32k R…
... upper 32k Ram made of 4164.
My question: Did ... -
4116 4164 DRAM testersSaw this and thought it may be of interest. https://www.ebay.co.uk/itm/DRAM-TESTER-for-4116-ZX-Spectrum-48k-other-retro-computers/154054505831?_tr…
... .uk/itm/DRAM-TESTER-for-4164-ZX-Spectrum-C64/154057204149?_trkparms ... -
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 …
... works as well as a 4164 (etc) in the upper RAM ... -
Component Equivalents/substitutionsA while ago, I mentioned to somebody in a thread that we should have a list of component equivalents and substitutions so that it's easier to fix our…
... chips work in place of 4164 upper RAM chips
V53C256P80L ... -
problem with sinclair zx 48 issue 6aHi all, I have the following problem when I turn on my sinclair without rom inserted. [url]http://217.79.64.145/sinclair/5.jpg[/url] when I turn o…
... memory with standart 4116 and 4164 memory chips.
but i ... on my working sinclair with 4164)
can someone tell me ... -
Alternative chips for upper RAM blockDoes anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more avai…
Does anybody know of a way to use 4464 chips instead of 4164 for the upper RAM block in a 48K machine? If not 4464 then something a little more available than the 4164. Winston? Piters??
TIA -
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] -
Anyone after 4164s...If anyone's after 4164 RAM... ... I'm in Houston at the moment, and EPO has some 4164 RAM in the shop, 100, 150 and 200ns variety, for $1 each. If …
If anyone's after 4164 RAM...
... I'm ... moment, and EPO has some 4164 RAM in the shop, 100 ... -
Upgrading to 48kI picked up a 16k Issue 2 Spectrum over the weekend, and I'd like to upgrade it to 48k. I've scanned an old [URL="http://www.drumfu.com/SinclairZXSp…
... :
[CODE]8 x 4164/4564 [IC15-IC22]
1 ... -
Problem upgrading 16K SpectrumHello Spec-chums, I've been a long time Commodore user, but also a long-time Speccy admirer (and emulator user). I've recently got hold of a Issue 2…
... . Removing any one of the 4164 RAM chips allows it to ... -
Another badly behaved RAM upgradeI have a 48K issue 4A board (yellow it is) that was a 48K machine from new, but only reports 16K working with the Sinclair ZX Test ROM in an Int2. H…
... with a socket and numerous 4164 chips have been cycled through ... I de soldered all the 4164 chips and fitted sockets and ... -
ULA gets so hot, it is cracked open!Hi everyone. I have bought a rubber-keyed 48K and the seller said he was selling it as "for spares/repair." Sure enough, it turns out it doesn't work…
... ULA and some 4116 and 4164 RAM chips.
What ... -
issue 6a faultyHi All I got issue 6a pcb from ebay with status faulty pcb had bad voltages when I power up I changed tr4 ztx650 and all voltages got back on ic6 I h…
... old chips oki3732, put new 4164 chips changed bridges to mic ... too
my 4116 and 4164 chips I got from working ... -
Snow on screen of 48K Speccyok you wizards I fixed up my 4116 ram issue as Winston and McLeod advised me before by replacing with 4164's.... all I could find here in Singapore (…
... me before by replacing with 4164's.... all I could find ... -
Broken ram or what?Hi! I own ZX Spectrum 48K. When i run command PRINT PEEK 23732 + 256 * PEEK 23733, I should get answer 65535? But i get 49151. In my machine the upp…
... /> So i bought 8 new 4164 chips, but same error: i ... -
48K Speccy Repair Log.Some people may know my love for writing up my repairs of arcade PCBs on various forums so thought I would do the same for this little fella. Had th…
... is a bank of 8 4164 DRAM chips, again each providing ... 74LS157s were missing and the 4164 DRAMs were socketted, the sockets ... the wrong type for normal 4164 chips. The link didnt look ... -
Memory upgradeHi! I bought a 16K rubber key Spectrum. It's said in the box and memory test program also said it's 16K machine. Strange thing is that there is yell…
... is: If i buy eight 4164 chips, should i buy and ...
