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Posted 20 hours ago

USB Programmer for EPROM 27C, (27C256, 27C512, etc.)

£9.9£99Clearance
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ZTS2023
Joined in 2023
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About this deal

Here's an example sketch to write some data to the EEPROM. Walk through the comments in the code for an explanation about what's going on. language:c I do still have some old eproms that have been stored in my mums loft for ages. These are the ones with the square window in.

What I'm thinking of doing is double-programming them. Program each chip as normal and ensure they verify okay. Wait a day, then verify again. If they verify properly, then program them again (and verify). These 5 chips came up as blank after only one 10-minute erase cycle, so they all got an additional 10 minutes of erasing. We believe partnering with other likeminded companies is a great way to help each other out and ultimately make products that are better for the end consumer. We have many distributors and partners around the globe who sell RetroSix products, you can find them by simply searching for "RetroSix Country Name" such as "RetroSix Germany" in google in your country for top results.

Constructing it as a MCM68764/MCM68766 programmer

All components must be fitted except for the RS-232 section. Constructing it as a MCM68764/MCM68766 programmer So many things these days are mass produced, not designed to last, and make as cheap as possible for as much money as possible. We started RetroSix not as a mass market business, instead with the aim of perfection. Recreating moulds of original shells, casting them from quality ABS, redesigning hardware such as power supplies, USB-C, audio and more, to upgrade your consoles to the highest quality available. No cheap junk sold for profit. A must have tool. If you look around in the forums, you will always meet with it, because it knows a lot, and is damn cheap. I think it is a must have, because there are many chips listed in its database, what you can not read with Orange5 or VVDI Prog. Another 'non-standard' EPROM worth mentioning is the Motorola 68764/68766, which is a 24-pin direct replacement for many 8kB ROMs as used in old IBM PCs, Commodore, etc. This is in contrast to the JEDEC 'standard' 2764 8kB EPROM which is a 28-pin chip with pinout and programming similar to the larger 27128 to 27512 versions; 28 to 24 pin adapters are available if you can't find the 24 pin Motorola EPROMS or your programmer doesn't handle them.

M35080, 25C010, 25C020, 25C040, 25C080, 25C128, 25C160, 25C256, 25C320, 25C640, M25P05, M25P10, M25P20, M25P40, M25P80, ST95010, ST95020, ST95040, ST95080, ST95160, ST95320, ST95640, ST95P02, ST95P04, ST95P08, X5043, X5045In simple terms, EEPROM is a type of memory module that can be used to hold, retrieve and delete information when installed in a computer or other electronic device. So what if the thing that we want to store is bigger than complete text of the Ghostbusters theme as written and performed by Ray Parker Jr? As it happens, you can get EEPROM devices with much larger storage. For instance, the Microchip 24LC1025 can store up to 1025 Kbits! That's 128KB, enough space to have some real fun with! An EEPROM programmer is a device used for writing (transferring) the code or data to a suitable memory module that enables it to perform the necessary task. They are also known as chip programmers or IC programmers. Then comes the difficult bit ... understanding what it does, well enough to successfully modify it. In this beginner’s guide to EEPROM memory products, we will highlight these similarities and differences. We will also outline some of the main uses for the various types of EEPROM chips, programmers and readers sold online in the UK and elsewhere.

U.S. International Trade Commission, ed. (October 1998). Certain EPROM, EEPROM, Flash Memory and Flash Microcontroller Semiconductor Devices and Products Containing Same, Inv. 337-TA-395. Diane Publishing. pp.51–72. ISBN 1-4289-5721-9. The details of SEEQ's Silicon Signature method of a device programmer reading an EPROM's ID. If you have the original files, there may be tools to describe programme flow (this will depend on the specific processor / controller).

I've also nearly completed a modern windows program to driver the programmer, but a linux command prompt is probably sufficient as the entire protocol is printed on the top of the programmer and is text based. You just need to convert data into an SRecord. There is even someone who has done it for linux https://www.youtube.com/watch?v=HaJ7cCiF-0c although they haven't posted there code yet. Same is true for whatever other microprocessor was used ... if the EPROM stored the configuration for an FPGA you have a whole different problem). They are ones I got with a whole bunch of other stuff when I bought a job lot of BBC stuff. So my idea is to build the programmer from the beebug magazine and see if I can use those that I already have. I qoukd of course need to erase them first using a UV box.

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