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ZX Spectrum upper RAM module (4532/4164 replacement)Following the [URL="http://zx.zigg.net/LRR/"]lower RAM replacement module[/URL], there have been quite a lot of requests for something similar for th…
Following the [URL="http://zx.zigg.net/LRR/"]lower RAM replacement module[/URL], there have been quite a lot of requests for something similar for the upper 32K RAM in a Spectrum.
I am pleased to be able to offer such a thing for sale. I haven ... -
HELP 4532 or 4864 RAM wanted !Hello My real spectrum fell off yesterday I know that one RAM memory chip is out of order There was 8 X HM4864P-2 but I saw in the Spectrum schemati…
... in the Spectrum schematics that 4532 could be OK (and that ... -
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 ... -
Lot's of ZX Spectrum parts: RAM chips, ULA's, etcI have new stock of 100% tested parts. I even got my hands on a bunch of ULA's!! [IMG]http://benophetinternet.nl/hobby/sales/parts/IMG_6068.JPG[/IMG…
... /> Prices:
- Ram chips: 4164, 4532, 4116, etc
- Logic chips ... -
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? -
March offers: lot's of parts!!!I have PLENTY parts available like a lot of 4164 ram chips. I even got some rare spare parts like ZX Spectrum issue two ULA's. - Logic chips: 74LSXX…
... available like a lot of 4164 ram chips.
I even ... [/B]
- Ram chips: 4164, 4532, 4116, etc
[B]1 ... -
Understanding DRAMI think I am going slightly mad. My hardware knowledge has got more rusty than it should have done, and I am going to have to turn to the experts to…
... * 128 = 16384 = 16k.
4164 chips are 64k bits. This ... /> Now I know that the 4532 is a failed 64k chip ... -
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 ... -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... the 4532. You're much better off putting a brand new 4164 ... -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... the 4532. You're much better off putting a brand new 4164 ... you saying: if I put 4164 instead of OKI (-H/-L ... exactly whic chip to use (4164 is enough to get it ... -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... you saying: if I put 4164 instead of OKI (-H/-L ... exactly whic chip to use (4164 is enough to get it ... br /> [/quote]
The 4532 chips are actually 4164s with ... put in a shiny new 4164, and Robert's your mother ... 't matter on the 4164 which half you use. -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... you saying: if I put 4164 instead of OKI (-H/- ... exactly whic chip to use (4164 is enough to get it ... br /> [/quote]
The 4532 chips are actually 4164s with ... put in a shiny new 4164, and Robert's your ... doesn't matter on the 4164 which half you use.< ... -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... you saying: if I put 4164 instead of OKI (-H/- ... exactly whic chip to use (4164 is enough to get it ... br /> [/quote]
The 4532 chips are actually 4164s with ... put in a shiny new 4164, and Robert's your ... doesn't matter on the 4164 which half you use.< ... -
Want a Speccy Repaired?Maybe it's time to put my 'skills' to use.... Now that I've sourced some of the nastier transistors, I've fixed about 6 rubber keyed Speccys in the …
... bad!
Any 4164 200ns will work (even though ... can only be mixed with 4532 type chips (Suffix 4 which ... -
RAM chips are 4164s and 4564s interchangeableI paid for some 4164s online, for upgrading my Spectrum 16K to 48K, and I've been given 4564s. I've tried these along with the correct logic ICs and …
... 4532 chips, but AFAICT they would be pin-compatible with the 4164 ... it is compatible with a 4164.
There appears to ... -
Spectrum RAM Paks...This jogged my memory (excuse the pun!!) : [url]http://cgi.ebay.co.uk/CURRAH-32K-RAM-PACK-BOXED-SINCLAIR-ZX-SPECTRUM_W0QQitemZ150057889352QQihZ005QQ…
... can be done with the 4164 RAM chip. If you use ... the 4164 chips in place of the half-working 4532 chips ... -
48k one dead, one dodgyhello everyone. I have 2 48k spectrum +'s (the one with the QL case). Both boards have issue 3B on them near the speaker. The first will power up …
... above the other. These are 4164 chips and make up your ... say 4164, probably say something like OKI 3732 or TMS 4532.
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…
... when replacing OKI chips with 4164?
In D4164C -3 ... =250ns) "similar" two your OKI 4532-200 memory.
Maybe ...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 …
... Jumpers: CAS/RAS from 3720/4532 chip need a little delay ... /> 3720-20 and 4164 chips. if you put 4164 chip, you don ... old 3720 / 4532 / etc 32Kx1 ram chips were 4164 chips with a ... bank ( 4532 L ) or high bank ( 4532 H).
Like 4164 is ...
