4116 to 4164 adapter. Menu and widgets Wms 4116 to 4164 Ram Power Adaptor: $12.

4116 to 4164 adapter Listed on 13 Mar, 2024 If I remember correctly, those machines take 4116 RAM not 4164 RAM unless someone has done the socket swap. The manufacturer makes no representations or warranties, either expressed or implied, with respect to the contents Apr 20, 2022 · 4116 4164. Here’s a summary of the options and some links and With this mod in place you can mix and match 4164 and 41256. Williams includes one for every 4116, however VCC pin is 9 Missile Command - 4164 RAM upgrade Purists look away. Anyway, machine doesn't work with those bad. com 4116-to-4164 - Adapter boards (8) for replacing 4116 RAM with 4164 RAM 82Sxxx-READERS - Adapter boards (3) for reading 82S123, 82S129, and 82S131 bi polar proms as a 27512 Plug and Play ROM replacement boards GALAXIAN-DB-R - Galaxian daugter board replacement kit- Replace your old broken or missing Galaxian daughter board. Why I created this kit as I work on a lot of early 80s arcade games (such as Atari Missile Command, Williams Robotron, Joust, Defender this adapter board will convert a 4164 to 4116 for use in machines that require 4116 no other modifications are necessary to the machine or the ram chip there are 8 in this pack. It's best to replace them with 4164s which run a lot cooler and are far more reliable, May 22, 2017 · KVM over IP Switch User Manual iv User Notice All information, documentation, and specifications containe d in this manual are subject to change without prior notification by the manufacturer. Like Security said, good power and connection and you wont have an issue. With this mod in place you can mix and match 4164 and 41256. Vintage DRAM chips may be new-old-stock or used. As of this writing the k Mar 5, 2009 · How I made a Williams 4114 to 4164 RAM adapter So, I finally got around to making two 4114 to 4164 RAM adapters for my Sinistar and Robotron. 12v and -5v no connected. Sold out. but I'll probably lift/cut IC pins rather than board traces, or make adapter sockets. g:NEC D4164C-3 Pinout: NC D IN WE RAS A 0 The old Spectrum used two types of RAM. We also need to disconnect pin 1 (Vbb -> NC) and pin 8 (Vdd -> NC) from the motherboard so there is no -5V and There is a pin-out of the 4116 (and equivalent) DRAM chips in the chip-pin outs link in my signature below. New modify the power harness so only +5 gets to the new 4164 ram. Menu and widgets Wms 4116 to 4164 Ram Power Adaptor: $12. if it's below 4. 4164s are great for what they are: single power source, cooler operation, but they can have their share of other issues too. Technical table. You don't have to remove the other banks, at least not for the mods I've seen, because the extra capacity of the 4164 is left unused. Oct 1, 2007 · The C64 makes a great 4164 RAM tester, as the machine doesn't work at all with any of them bad since each chip is 1 bit of 8 total. These are for: 1. 1; 2; First Prev 2 of 2 Go to page They are far from interchangeable. Ian Cudlip 2021 grandoldian at gmail. 7489 - This RAM IC still remains untestable. Ships from United States. The RAM is addressed with a 7-bit row address and a 7-bit column address, giving 128 x 128 individual “cells” that can be accessed. Sold: 49 ZX-UNO VGA adapter. . Replace your defective 4116 dynamic RAM chips with new, more reliable 4164 dynamic RAM. 2) Loss of decoupling capacitor on 4164 VCC line, pin 8. 2 By Mirco Gaggiottini (original project)With this Pcb you can make the DRAM memory @rhombus who used to repair and sell a lot of Williams stuff noted in the past that the 4164 can cause weird random glitches on Joust and Robotron and would only use 4116. This turns out to be really easy, the A7 pin of the 4164 is in the same place as +5v on a 4116, so we don't need to do anything here and A7 will be tied high. Equivalent to Q-Mark part number: RM2-M3 . This adapter is a very small PCB board that can be used to allow you to insert a 4164 RAM C64/VIC20 PC keyboard adapter →. This Tester supports 4164,41256,4116,4532 and pin compatible Dram. Feedback 18 (95%) Credits 1,708CR Apr 20, 2022 #1 Are 4116 RAMs a replacement / equivalent to 4164 Rams? Sep 20, 2024 · 4164 to 4116 adapters What about 4164 to 4116 adapter PCBs? Like my NVRAMs. I had a pic of the mod in my favorites but In this video I show you how to use Eagle Cad software to design a simple 4116 RAM to 4164 adapter board and get it fabricated in-expensively with seeedstudi this adapter board will convert a 4164 to 4116 for use in machines that require 4116 no other modifications are necessary to the machine or the ram chip there are 8 in this pack. arcade video games . ZX81 Ram Pack Issue 1 4164 Update. This adapter is a very small PCB board that can be used to allow you to insert a 4164 RAM into a 4116 socket. " 4116 DRAM are actually tri-voltage. I don't know if such algorithm can be implemented as bit banging on the client side (as for logic chips for example) because of the dynamic nature of these memories and if you don't refresh the data very quick (2 or 4 ms if i Jun 10, 2020 · An adapter board for a 4464 DRAM chip, which replaces 4 standard 4164 DRAM chips in a C64. As of this writing the k Dynamic RAM chips were produced in steps from 16k bit (4116) to 64kbit (4164) to 256k bit (41256), so stacking two slightly different 64kbit chips to make a 128kbit device might have saved in terms of PCB layout and sockets, but must have been a right pain due to the double height of the device when it came to manufacturing, handling, storage etc. A set of 8 new 4116 IC\'s One common upgrade is to replace the 4116 memory (64k memory needing +5V, -5V and +12V) with 4164 memory (64k memory needing only +5V), but there are multiple ways of doing it. e. If you think you got some bad 4164's, give a shout and we can work something out 4164 adapter pcb for 4116 ram (8 pieces) 4164 adapter pcb for 4116 ram (8 pieces) $15. external devices through HDMI even under the situation that there is no HDMI port on the devices. #2 is the one which most concerns me as the datasheet for the 4164 DRAM recommends that a 0. Cross reference: 4116 (pin compatible – requires pin 1 to pin 16 voltage mod) 2116 (pin compatible?) KM4146 (pin 1 NC) M3764; MSM3764; HM4864; MCM6665; uPD4164; TMM4164; M5K4164; MB8264; 41256 – 256K x 1 DRAM. Second (and this is related), when you made your adapter you decided to pass through the -5V (against the advice of the diagram you were following). With two of these boards you can replace all 8 of the 4164 DRAM chips in a standard C64. Previous part number: M-5000-4164. May 3, 2019 · Missile Command - 4164 RAM upgrade Purists look away. *Please note that if you insert a DRAM other than 4116 type into SOCKET0, it will be damaged. Since 4164’s are much more reliable and use a lot less power than the standard 4116’s your game should give years of service free of RAM problems. All Numbers; 4100 4101 4102 4103 4104: 4105 4106 4107 4108 4109 4110 4111 4112 4113 4114 4115 4116: 4117 4118 4119 4120 4121 4122 4123 4124 Power Connector. NB: Not suitable for the ZX SPX Miller Special Tools C-4164 Differential Bearing Preload Wrench. as YellowDog pointed out in his seminar there's a multitude of different ways to go about replacing the 4116 ram with 4164s. 00V at the chips. classic technology. Sold: 85 Quick view 8 x 4164 ZX Spectrum Upper £8. These RAM chips produce more heat than chips that only use +5v, and problems with the power switch can cause the 4116 DRAMs to fail to operate properly. Includes KM4164B-10 IC\'s: $39. Joined Sep 7, 2007 Messages 1,051 Reaction score 0 Location greenwood, Indiana. They run cooler 2) You only need +5V Since you don't use the +12 or -5 with the 4164 you don't have the danger of shorting the wrong pins. Note that 4164 are 64Kbit and not 16Kbit so the MZ will use only a quarter of memory. It doesn't happen much on if you're using a 4164 adapter and have the 4116 rams still, swap back to using those and see if it goes away if you're using it with a switching power supply or you have voltage adjustment capability, 4164 ram has a narrower operating tolerance. Why This kit was created because a lot of early 80s arcade games and computers (such as Atari Missile Command, Williams Robotron this adapter board will convert a 4164 to 4116 for use in machines that require 4116 no other modifications are necessary to the machine or the ram chip there are 8 in this pack. This adapter is a very small PCB board that can be used to allow you to insert a 4164 The 4116-to-4164 RAM adapter is a replacement solution to replace a 4116 RAM with a 4164 RAM. Buy 4116 RAM Socket to 4164 RAM Adapter 8 Pieces online on Etsy India. 9V there's no An adapter board for a 4464 DRAM chip, which replaces 4 standard 4164 DRAM chips in a C64. 4. Turn off socket power switch, then insert DRAM under test into the socket. would people use these? I think i did this right. My Account ; Track Orders ; Favorites ; Shopping Bag ; Display prices in: USD . What is it The 4116-to-4164 RAM adapter is a replacement solution to replace a 4116 RAM with a 4164 RAM. NEC D416C-2 Pinout: (-5V) V EE D IN WE RAS A 0 A 2 A 1 (+12V) V DD. So now you are feeding -5V to pin number 1 on your 4164 DRAM. 2. Listed on Nov 11, 2023 The adaptor should only be used when populated with 4164 rams & removed if you wish to use the original 4116 rams. 05V) and on a DRAM: 4116 (not tested), 4164, 41256, 4416, 4464, 44256, 21010, single-voltage 4116 (K565RU5 or sth like it). MB81416-10 Fujitsu $3. I modded my boards to convert my Robotron, Joust and Bubbles to 4164 ram. Here’s a quick and easy way to modify your Williams 4164/41256 Ram Adapter converts the power wiring pinout on Williams CPU pcb so 4164 or 41256 RAMs can be used in place of 4116 RAM. Mopar Essential Tools Homepage; Model: 114400; Shipping Weight: 2lbs; Manufacturers Part #: C-4164A; Manufactured by: Mopar Essential Tools; Also Known As: C-4164A; Special Order Contact For Details $ 78. Midway Galaga sit down glass top cabinet wiring harness and power supply/transformer (USED) with switching power supply. I bough Set of 8 new old stock 4116 chips for the ZX Spectrum 16K/48K. This adapter is a very small PCB board that The 4116-to-4164 RAM adapter is a replacement solution to replace a 4116 RAM with a 4164 RAM. Joined Feb 5, 2010 Messages 2,583 Reaction score 1,573 Location Boise, Idaho. You are missing the -5V (pin 1). Make sure pin 1 and 8 are not in contact with any other components nearby. com. 123 views Report item. Out of stock. 8 x 4116 to 4164 RAM adapters $12 shipped to USA Thread starter brzezicki; Start date Jun 4, 2020; brzezicki Well-known member. However, extensive testing can reveal problems in e. He did say that Defender seems to be completely fine with 4164. 4116-15 Major Brands $3. Williams 4116 to 4164 mod Thread starter indy5mike; Start date Sep 25, 2009; indy5mike New member. Tester for 4116/4164/41256 or compatible DRAM chip - WellsWang/RAMTESTER. This adapter is a very small PCB board that can be used to allow you to insert a 4116-to-4164 - Adapter boards (8) for replacing 4116 RAM with 4164 RAM 82Sxxx-READERS - Adapter boards (3) for reading 82S123, 82S129, and 82S131 bi polar proms as a 27512 Plug and Play ROM replacement boards GALAXIAN-DB-R - Galaxian daugter board replacement kit- Replace your old broken or missing Galaxian daughter board. I was just wondering what Forums. 👀Il tester non verifica il corretto timing della ram quindi potreb 8 x 4116 ZX Spectrum Lower £8. Photos are just examples. $20. g. Turn on socket power switch, check the LCD display, and select DRAM model number by pressing SELECT/ENTER button. com on Patreon. Cinemetronics Baseball The Season II. SL41256P-120 Siliconix/Vishay $1. Designing and frabricating a simple PCB adapter board (4116 to 4164) Part 2: The Results! 4116 to 4164 mod for Missile Command RESOLVED Thread starter Yoeddy; Start date Jul 20, 2022; Yoeddy Well-known member. Will it be possible to adapt your 4116 tester to this 93422PC – SRAM 256×4 – 45 ns? The C64 makes a great 4164 RAM tester, as the machine doesn't work at all with any of them bad since each chip is 1 bit of 8 total. 00: Wms 4116 to 4164 Ram Power Adaptor + 24/4164: $35. ), use 4116 RAMS which are a bit "flaky" they require +5, -5 and +12V and are The 4116-to-4164 RAM adapter is a replacement solution to replace a 4116 RAM with a 4164 RAM. A set of 8 new 4116 IC\'s from China are 4116 & 4164 DRAM Tester / Stephen Vickers HYB4116 HYB4164. What is it The 4116-to-4164 RAM adapter is a replacement solution to In this short video we see the results of our PCB design (4116 RAM to 4164 RAM adapter) from our last video and test it in an Atari Missile Command arcade PC Dram tester for 4116 and 4164/256 (now in beta testing for serial communication) Simple project taken from the base of @FozzTexx. $125. Yet, USB to HDMI adapters are not always workable for some users, especially after they upgrading their operating system (OS) to the latest Windows 11. Insert into SOCKET0 for 4116, SOCKET1 for 4164/41256/4532, SOCKET2 for 4416/4464, and SOCKET3 for 44256. These are perfect for replacing defective 4116 chips. The 4116-to-4164 RAM adapter is a replacement solution to replace a 4116 RAM with a 4164 RAM. Sure, it'll work -- I haven't done it myself, but most of the 4116 -> 4164 modifications out there are universal. To replace 4116 with 4164, disconnect Vbb, change Vdd from 12V to 5V (!), and leave Vcc (5V) connected to A7. Listed on 11 Nov, 2023 This adapter is a very small PCB board that can be used to allow you to insert a 4164 RAM into a 4116 socket. There are many more 64k*1 and 256k*1 chips that fit the bill. Do not use if using 4116 This adapter is a very small PCB board that can be used to allow you to insert a 4164 RAM into a 4116 socket. 4116 & 4164 I usually work with people that send RAM to either pay up front or offer a discount on a RAM tester kit. Never test a 4164 RAM in a 4116 socket because it is likely to be fried. - as long as it works - right now I can not get either working! DRAM tester can test 4164 (565RU5 exUSSR) and 41256 (565RU7 exUSSR) DRAM IC. g Automatically powers your 4116 chip with the required -5V, 5V and 12V rails, conforming to the datasheet specification. Here is the info from the C64 Wiki about replacing 4116 RAM with 4164 RAM (I'm not sure if the method is the same for the 4516 RAM): Some of the systems that use 4116 RAM are the Colecovision consoles, TI 99/4A computers, and some Williams arcade PCB's like - Defender, Joust, Robotron. are you using the linear power supply? switching power supply? 4164 ram has a narrower voltage operating tolerance. 50: Wms Def/Star/Bub/Rob/Jou OEM PS 4164 Spectrum "Upper RAM" Chip. 00. The BIRDDOG MINI : HDMI TO NDI ENCODER / DECODER is a tiny NDI interface for HDMI video sources and destinations. VCC pin shifted from 4116 pin 9 to 4164 pin 8 In this video I assembler a DRAM tester DIY kit designed to test the 4116 and 4164 DRAM chips commonly used in 8-bit micro computers. Overall length (mm) 5: Stem diameter (mm) 4: Stem material: If I remember correctly, those machines take 4116 RAM not 4164 RAM unless someone has done the socket swap. Connect the AC adapter (center positive, 7V to 12V) to the DC jack. \n \n; Inserting DRAM to test \n \n. A power supply of the ZX spectrum can also be used (same power and polarity) 2364. 8k x 8 bit PROM used as ROM in several commodore (and other) computer systems The PROM is not pin compatible with the 2764 EPROM, to use an EPROM you need to create a adapter I replaced all of the 4116 RAM sockets and RAM, all 48K of that. Why This kit was created because a lot of early 80s arcade games and computers (such as Atari Missile Command, Williams Robotron, Joust, Defender, Stargate, Bubbles, TI, TRS80 etc. ZX Spectrum 16K / 48K ‘lower memory’ (there are 8 of these chips in these ZX Spectrum models) So, this has been happening almost daily, in several units that I have here: extracted from the log: [2019-05-15 15:26:38. just get 4164 and the little adapter connector that comes with a label sticker. Anticipating a problem, I checked all lines for connectivity and shorts. I thought I would just add my 2 cents to one of the great tutorials that are already linked to in this post from YellowDog Jan 10, 2011 · These Williams boards originally used 4116 RAM, but can be modified to used 4164 and 41256 RAM, a 3rd party cart that uses standard 28 pin 8k x 8 ROMs would be best unless you want to work wtih wiring adapters or programming hard-to-find Motorola 68764/68766 24-pin 8k x 8 EPROMs. If you recall seeing it working before, are you sure you didn't pull out the original 4116's and replace them with the 4164 chips in error? I build the 4164 adapters. Equivalent to Zeiss part number: 602030-8341-000. Brand and exact model may differ. They don't just die (a lot) they often take out other parts when they die. Here’s a quick and easy way to modify your Williams CPU to run 4164 (and/or 41256) directly. Williams includes one for every 4116, however VCC pin is 9 Janky-ass USB-C to USB-A adapter July 11, 2024; Simple Apple 2 PSU repair June 29, 2024; Apple 1 (replica) place the 4164 or 4116 chip you’d like to test on the breadboard, connect a USB cable from the Pico to a computer, and look at the terminal output (or just the on-board LED). 00: Wms Defender PS Connector Kit : $3. I replace all power supply headers, but verify that the solder isn't cracked at your bottom heatsink The restoration of a 1980's Williams Defender arcade machine. For operation you need a 9V power supply with (+) in the center! Before you test anything, please check the correct polarity on the 9V connector and the correct voltages on the two sockets. Goal:- Replace 4116 chips with 4164 chips and make pack more reliable and eliminate the annoying ribbon cable. I started writing some code based on their examples, but I haven't been able to 4164 / 41256 Dynamic RAM Tester. with added support for 4116 memories and a status display. 08. Williams 4164/41256 RAM Adapter Williams 4164/41256 Ram Adapter converts the power wiring pinout on Williams CPU pcb so 4164 or 41256 RAMs can be used in place of 4116 RAM. This Video Games item is sold by Pengoland. There are single-voltage, lower power chips that can be adapted to run in their place. The 41464 has 3 additional pins for the 3 additional data lines so that is the main change in rewriting. Test your vintage computer RAM chips such as 4164, 4116, 41256, etc IBM PS/1 PS/2 34 pin Floppy Disk Drive Adapter. 16Kx1 bit DRAM chip 8 of this IC make the lower 16k part of the ZX Spectrum 16K/48K RAM. This adapter is a very small PCB board that can be used to allow Some people like to modify their boards to use 4164 these by physically hacking up the board or the chips, this adapter that lets you simply plug the adapter (fitted with a 4164) into a normal Williams 4164/41256 Ram Adapter converts the power wiring pinout on Williams CPU pcb so 4164 or 41256 RAMs can be used in place of 4116 RAM. jacklick Well-known member. This grounds the additional address line (pin 1) on the larger capacity 41256 (this pin is unused on the 4164). This is useful if you have already extracted a 4164 chip Unfortunately I can't find anywhere that sells pin-compatible replacements for the old 4164/4464 and 41256/44256 ICs. Listed on 14 Jul, 2024 4116 DRAM to 4164 Memory Adapter Boards. I URGENTLY need it working, either in a "virtual" mode or a direct XP/USB mode. The 41464 has 4 data bits and 64k addressable locations. It's best to replace them with 4164s which run a lot cooler and are far more reliable, KN2100VA / KN4100V-VA / KN8100V Series / KN1132V KN1132VB / 8000VB Series KVM over IP Switch User Manual Feb 5, 2020 · Despite that the TL866 only support static ram for testing, to test those DRAMs a test algorithm should be implemented in firmware. The boards are nicely made and the quality is Missile Command - 4164 RAM upgrade Purists look away. 64Kx1 bit DRAM chip 16 of this IC make the 128K RAM of the ZX Spectrum 128K and ZX Spectrum +2 (except ZX Spectrum +2A/2B). png. The board pictured is running MK4564, TMS4256, and HM50256. WARNING: This tester DOESN'T TEST memory on high-speed, like these GAL-based ones. Pin 8 of the 4164 (Vcc) will be connected to +12v unless we do something about it. NB: Not suitable as ‘upper memory’ for ZX 16K/48K: these are 4164 chips, available in the webshop. First of all, I want to congratulate you on the 4116 memory tester you designed. Chip will not be tested if adapter is not present. Skip to content. Listed on Mar 13, 2024 I cut the -5v from pin 9 and leave it alone. Vediamo come funzionano le dram dei nostri 8bit e come possiamo verificare se sono buone. That RAm you have indicated will work fine. \n. I've swapped 4116's for 4164's in a TRS80 Model I clone. The Apple II makes a good 4116 tester- just use the first or second chip, they are zero-page and stack (or maybe each bank is wired 1/8 like the C64, I forget). The 8 bit matrix for the 4164 also makes sense (8 address pins and an 'address select pin' gives effectively 16 bits of address space = 64K). Please note that this will not give you more ram even though 4164’s are 64k the ram pack is only designed to address 16k. 4164 adapter pcb for 4116 ram (8 pieces) 4164 adapter pcb for 4116 ram (8 pieces) $15. 4116 chips for the lower 16k of RAM and 4164 or 4532 DRAM for the 32K of Upper RAM. In this video I assembler a DRAM tester DIY kit designed to test the 4116 and 4164 DRAM chips commonly used in 8-bit micro computers. An interesting tidbit is that the upper RAM chips on the Spectrum are actually 64K, however only one half passed the manufacturing tests meaning only 32K is usable, and this significantly lowered the cost. An Arduino is required. besides the fact depending where you buy them you might have a few DOAs out of the box, they have a much narrower voltage operating tolerance (I've found they only really work without errors between 4. Build an adapter to re-route the +5V 4116 to 4164 (and/or 41256) mod for Williams CPUs. It is not too different to the 2 arduino projects, so their code might work with this PCB. Donor 2021. Hopefully, you have just damaged a 4116 however when +12 ends up going into ICs designed for +5, lots of bad things can happen. Hence the importance of affixing the label Robotron 4116 to 4164 adapter, etc. Joined Nov 6, 2006 Messages 27xxx to 2364 or 2332 ROM Adapter 27xxx to 2364/2332 By Mirco GaggiottiniWith this Pcb you can use a 2764 up to 27512 inse Dram tester for 4116, 4164/256 and 4532 (Original) Dram Tester V. Purpose of this modification: The 4116 DRAMs used by the TMS9928A video chip require -5v, +5v, and +12v . ), use 4116 RAMS which are a bit "flaky" they require +5, -5 and +12V and are Insert into SOCKET0 for 4116, SOCKET1 for 4164/41256/4532, SOCKET2 for 4416/4464, and SOCKET3 for 44256. ken 4164 – 64K x 1 DRAM. Sold: 7 77 likes, 7 comments - smallchangearcade on July 27, 2021: "This was a really fun house call. 4164 is 4 times as big, and you end up wasting all that extra capacity, but 4164 is a) more readily available and b) only uses one volt rail rather than 3, so it runs cooler. iirc, the 4264 is a fast-column version and would work in place of most 4164 applicatons. N-5004-7593 4164 adapter pcb for 4116 ram (8 pieces) $15. But will be added to a future tester version. Rebuild the OE power supply. RJ. Why This kit was created because a lot of early 80s arcade games and computers (such as Atari Missile Command, Williams Robotron This Video Games item is sold by Pengoland. 4116\'s are getting hard to find and new ones are getting expensive. KN2100VA / KN4100V-VA / KN8100V Series / KN1132V KN1132VB / 8000VB Series KVM over IP Switch User Manual Does anyone have any thoughts on the Bob Roberts adapter going from 4116 ram to 4164 ram? I did the mod in 2016 and it isn't some magic cure all that it's perpetuated to be. Previous part number: M-5000-4163. Mark. 75. If you want your Williams games to run reliably then you need to ditch that crappy 4116 DRAM! Those tri-voltage devices are power hungry and prone to failure. £9. VAPS. It has 4 pins dedicated to power, 7 pins for addressing, 2 for data I/O and the final 3 are for controlling the chip. Tester has two working mode: "simple LEDs" and "advanced UART". Note that the outside of the connector is the positive 9 volt lead. The 4116 uses 3 power supplies, 12V, +5, and -5. One of the questions asked quite a lot with Williams boards is how to test the often failing 4116 memory chips Well the good news is that the 4116 shares the same 100% compatibility with the NEC D416C-2 4116 16Kx1 RAM chip, which was used on the ZX Spectrum Here’s a nice picture for reference 4164 Key Feature. Posted on 1 June 2020 by levoman. These chips are commonly used in retro computers and arcade machines from the 80’s Hey all I just did a small run of 4116 to 4164 RAM adapter boards for my own missile command. Bubbles seems to be working fine but both Joust and Robotron have intermittent verticle lines that randomly appear. Navigation Menu Toggle Thankfully, a circuit for testing 4164 ICs can be used, as long as you can supply the required 12v and -5v power lines that the 4116 ICs require. In this video I'll be testing the 4116 / 4164 DRAM tester that I assembled in a previous video. D41256-08 NEC Corporation $2. While most of the pins (address / data) correlate there are problems with the power rail pins. The 4116 DRAM chip is an integrated circuit packaged as a 16-pin DIP. Do not use if using 4116 RAM in installed on your board Now I understand the 7 bit refresh - the original 4116's have only 7 address lines (rather the 8 on the 4164). New posts Search forums. For this, pin 9 (A7 which doesn't exist in 4116) is set to Vcc. Do not use if using 4116 RAM is installed on your board. 4116 16 K x 1 DRAM. I wouldn't bother doing the mod unless I was trying to fix a 64 with a dead ram chip and I only had a 41464 on hand. 25. Will it be possible to adapt your 4116 tester to this 93422PC – SRAM 256×4 – 45 ns? Stylus adaptors are designed to allow styli with different thread sizes to be built into stylus configurations. Arduino based DRAM tester for 4164 and 41256 memory chips. Other products. Listed on 13 Mar, 2024 This Video Games item by Pengoland has 2 favorites from Etsy shoppers. Each cell has a small 4116. This adapter harness will allow you to fit unmodified 4164 DRAMs to your Williams video game(s). This Video Games item by Pengoland has 2 favorites from Etsy shoppers. After performing the mod you can throw out all that 4116 and pop in the more Replace your defective 4116 dynamic RAM chips with new, more reliable 4164 dynamic RAM. 4164 Ram chips qty 8. It should not be used as benchmarking tool. somewhere between 4. Needs −5 (VEE), +5 and +12 (VDD) volt power supply. \n \n. This adapter is a very small PCB board What is it The 4116-to-4164 RAM adapter is a replacement solution to replace a 4116 RAM with a 4164 RAM. 4164. You will be discounted for purchasing multiple. This is a design by Stephen Vickers, and (at time of writing) Here is the schematics about the differences between 4116 and 4164: dram_pinout. 00 Buy Now . This Stargate is a true survivor, thanks to its owner. We thought you'd like these too NEAT 2364 - reprogrammable 24pin ROM replacement If it continues, I'm tempted to throw on the 4116 to 4164 adapter and install 4164 RAM chips. Missile Command originally uses 8 x 4116 rams, and 4116 rams are terrible. Stylus adaptors are designed to allow styli with different thread sizes to be built into stylus configurations. 00 Out of stock. pachinko . Listed on 13 Mar, 2024 I never use the adapters, I always do trace mods. \n Get more from arcade cabinets. Thread starter virtvic; Start date Apr 20, 2022; virtvic The Cabaret King. This is just a simple PCB I designed to unify the open-sourced, arduino-based 4116 and 4164/41256 DRAM testers into one piece of hardware. in case no one knew, 4164 adds an additional address line A7 (its capacity rises exponentially if you will from 2k to 8k with this added address line) in place of the old spot where +5V ran on the rams at pin 9. This will allow you to use 41256 as well as 4164. This adapter is a very small PCB board that can be used to allow you to The 4116-to-4164 RAM adapter is a replacement solution to replace a 4116 RAM with a 4164 RAM. If you require a specific model or speed grade, inquire to see what stock I have. Cross reference: In this kit I build a 4116 / 4164 DRAM testing kit, suitable for ZX Spectrums Lower and Upper RAM tests, Commodore 64 plus many more retro computers. 4164 ram, no adaptor the needed voltages for the 4116 ram field is supplied. Chip Tester not included. TrilobytESRetro. It's best to replace them with 4164s which run a lot cooler and are far more reliable, they also don't require +12v and -5v like 4116s. USB to HDMI adapters allow people to connect computers to secondary display, TV, etc. 1024MAK Posts: 5411 arcadeshopper. Donor 9 years: 2013, 2016-2021, 2023-2024. Thread starter Yoeddy; Start date Oct 18, 2021; Prev. plug and play solution, no need to hack up the CPU board, can replace a single chip RAM Tester for 4116, 4164 and 4532 Chips. It hadn " I've seen the ceramic resistor right next to the DC output plug go open/out of tolerance/physically break that's for +5. A7, pin 9 of 4164 gets VCC. 95. I run 4116 ram in my Williams games. They disappear when something moves over the line or a level is changed. The boards are nicely made and the quality is amazing for the low price! Jun 10,2020. I did some searching and the I found the TL866 EPROM programmer. The pinout of the This Video Games item is sold by Pengoland. Shields the tester from these voltages. In decoding mode, you can connect an NDI source to the decoder and it will output to a monitor, switcher, or other I have a keyspan single port usb 2 serial adapter - and I can't get it working with XP and parallels on an imac core 2 duo. 74: About 70 types of 74-family and 40-family chips. I never heard of the 4264, but some searching showed that it is backward compatible with the 4164 but the 4164 is not upward compatible. They are $10 shipped (continental US, other places higher). Equivalent to Q-Mark part number: RM3-M2 . Function: 2364. Also the power requirements of the 4116's and 4164's are different (4116's need a 12V supply as well as 5V, 4164's only need 5V). Buy Now. This means if the Atari uses Page Mode in its design to speed up read/writes, the 4164 may not work. Connect Pin 8 and 9 with one another through a short piece of wire. I need to test 10 Chips 93422PC memories – SRAM 256×4 – 45 ns. 996 -5 0x2604 INFO LOG] DisplayLink driver registered. I have to build an adapter to be use it with the ZX81 and see if the 16Ko will work with it Or I have to replace all the rams with modified 4164 one, no need anymore for the 12V and -5V Top. Shop for handmade, vintage and unique Video Games items from Pengoland online on Etsy DRAM Tester 4164 41256 4116 4532 with OLED display from TrilobytESRetro on Tindie. 3 thoughts on “Store” Pingback: Weekly Gaming/Tech Thread #20 - Post-Superbowl Hangover Edition - A hardware tester for old 4116, 4164 & 41256 DRAM modules. Quotes, samples and datasheets available at Jameco Electronics. Products in stock and ready to ship. Power Supplies & Wall Adapters; Security Products; Test, Tools & Supplies; Wire AC adapter connection. Top. I made a tester for 4164 DRAM chips to help with restoring my Commodore 64--the first computer I learned to program on! In the process I learned about the ways memory chips can fail and what algorithms have been developed to NB: Not suitable as ‘lower memory’ for ZX 16K/48K: these are 4116 chips, available in the webshop. pinball machines . Joined Feb 11, 2013 Messages 6,736 Reaction score 2,390 Tester for 4116/4164/41256 or compatible DRAM chip - WellsWang/RAMTESTER. Remove all 4116 DRAM and insert them one at a time (powering off between tests). It isn't straightforward. 65,536 x 1 Organization; Single +5V Supply (10% Tolerance) Upward Pin Compatible with 4116 (16K Dynamic RAM) Max Access Time from RAS: Less than 150ns; Min Cycle Time (Read or Write): Less than 260ns; Long Refresh Period: 4 milliseconds; Vintage DRAM chips 4116, 4164, 41256, 44256 RAM chips This is for one chip. 2101, 2148, 4096, 4116, 1103 and various other chips that is in questionable status. 99. In encoding mode, you can connect your camera or other video source and it will be instantly be available on your NDI-enabled network. We would like to show you a description here but the site won’t allow us. 4116 RAM to 4164 RAM socketedadapter boards with memory - Tested. I do not tie it to pin 8. 41256 ram has an additional address line A8 at pin 1 where -5V was -- you have to cut the -5V supply to the Apple IIc (Early - Mid production) — late models with 4464 chips, do not work with 4164's Macintosh 128k C 64 - (Early - Mid production) — late models with 4464 chips, do not work with 4164's C 128 - (Early - Mid production) — late models with 4464 chips, do not work with 4164's C PET (Replaces 4116's) 2) Loss of decoupling capacitor on 4164 VCC line, pin 8. All are 5V TTL logic. Organization: 64K x 1, Speed: 150ns or faster, 128-cycle refresh, Package: 16 pin DIL These chips cannot be (directly) used to replace the "4116" chips used for the LOWER 16KB of RAM in the bottom left 4116 < 4115 | 4117 >. But who may know if they used 'Page Mode' addressing?? Here is a link to the Micron Technology 4264 part. 50: Wms Stargate & Up PS Connector Kit : $4. 4116 DRAM requires three power supplies and when it has been powered up for a while it is quite Upgrade the 4116 RAM chips to 4164 (chips and plug in adapter from The Real Bob Roberts) 3. Sep 25, 2009 #1 I have had a Bob Roberts adapter on my Stargate for about a year but I want to make the mod permanent. 8 ea. Since all the voltages are already there, I've added designing an adapter to allow testing of the 4116 to my to do list. That lets you use a 4164 in games that are socketed for 4116s(Game like Missile command) and I think williams games. 85-5. Overall length (mm) 7: Stem diameter (mm) 4: Stem material: Stainless steel: Thread: M2: To mount: M3: Technical documentation. I ordered 4164 ram and adapter and a deluxe power supply rebuild with caps, connectors, ic chip, rectifers, a proper full power The 4164 has 1 data bit and 64k addressable locations. This adapter is a very small PCB board that can be used to allow you to insert a 4164 this adapter board will convert a 4164 to 4116 for use in machines that require 4116 no other modifications are necessary to the machine or the ram chip there are 8 in this pack. such as the 4164 or 4516, quantity 8; 16-pin sockets (optional, but highly Matt’s site is now offline since I quoted it in my initial 4116 memory to 4164 memory post, so I have reproduced it below as I was checking the information myself to test some boards. The label that comes with the adaptor should be applied to the board to prevent any problems in the future. If everything else is hooked up "normally", you might have 16k. The 4164 tester instructions I followed are here. ☕ if you want the PCB, please support me and follow this link : PCBWAY! Components: "4116 chips require 2 sources: +5, and +12V and 1 sink, the ground. C I had made some of these (PCB adapter for putting a 4164 into socket expecting a 4116) a few weeks ago for my Missile Command board and had to order a Forums. I do recommend modifying the PCB though and not using the adapter. 4116 to 4164 (and/or 41256) mod for Williams CPUs If you want your Williams games to run reliably then you Also, the 4164 has 4 times the capacity of the 4116 so we'll need to address that too. ken Jameco Electronics 4164-150 DRAM. coin cell or NVRAM, 4164/41256 RAM upgrade either with an adapter or mod the board. Jul 20, 2022 #1 There's even an evil hack where you replace the 4116 RAM with 4164, by bending up the legs. How to use a 4164 chip instead the original 4116: Bend pin 1 and 8 upwards so they no longer go into the socket's connectors. 1uf ceramic decoupling capacitor be used on EVERY 4164. I need a quite generic IC tester. mattosborn Well-known member. These were apparently quite widely used ICs - the 41xx is 1-bit memory, and the 44xx is 4-bit memory, with the xx64 having 64k addresses and the xx256 having 256k addresses. faylp joxnj ibahk hfzx hymp qtryue rlf mpdwmpn wqa hhhfqj