HOW TO copy MD2202-D16 memory onto another - Page 1
Forum section: electronics / general

author: Unnit
author_rank: Newbie
timestamp: January 24, 2021, 06:34:15 pm
content: Hi, I am a true amator when we talk about this subject, I didn't reach this era of old computing and is a bit strange for me to understand how to address this kind of technology (for instance parallel memory), but I want to know if it is possible because I have a sewing machine and this chip is making me a lot of trouble. I need TO COPY this memory onto another similar one and I bought two of this memories but I struggled to find on the internet how to copy them and nothing heped me. Can anyone tell me a technique or a programmer and some software for it?When I bought the memory my first attempt was to find a way to communicate with arduino, because is the cheapest solution that I have but I have also other tools on my hand like raspberry PI, serial programmers, an old PC that have serial port, parallel port.Thank you.https://www.aliexpress.com/item/32857010627.html?af=143650&utm_campaign=143650&aff_platform=portals-tool&utm_medium=cpa&afref=https%3A%2F%2Fwww.google.com%2F&dp=650c646e813b20ad93222653b57876d7&cv=47843&aff_fsk=_ePNSNV&mall_affr=pr3&sk=_ePNSNV&aff_trace_key=ca84b0133f97449983ec371336ec8ff2-1611513208531-09149-_ePNSNV&terminal_id=25631957ebb145d4b00dab831392d7db&tmLog=new_Detail&utm_source=admitad&utm_content=47843https://www.digchip.com/datasheets/parts/datasheet/1761/MD2202-D16-X-pdf.php

author: Rasz
author_rank: Super Contributor
timestamp: January 24, 2021, 07:54:22 pm
content: You cant just read it in any external reader.https://en.wikipedia.org/wiki/M-SystemsDiskonChip are the real precursor to SSDs. Afaik they run flash translation layer on the main cpu thru bios extension loading trueFFS driver.>BIOS then loads the TrueFFS software from the flash memory into the host memory, delivering full disk capabilities to the operating system.most likely you will need to plonk it into a pc motherboard, let it load its driver, and then copy like a normal disk>I have a sewing machinemodel? whats inside? what software is it running? what architecture? can you take a picture of the board module is plugged into?

author: sequoia
author_rank: Unknown
timestamp: January 24, 2021, 09:16:37 pm
content: A treasure trove of information on DiskOnChip (DOC) devices can be found here:http://www.digital-circuitry.com/MyLAB_IC_PROG_DISKONCHIP.htmEasiest way to copy these (without custom software and/or hardware) would be to find computer with a DOC socket. After BIOS (in the DOC device itself) loads it should appear as a regular 'disk' to the system (MS-DOS, etc...), so could be copied with any software that can read/write raw disk images...

author: sequoia
author_rank: Unknown
timestamp: January 24, 2021, 09:24:48 pm
content: Note, that there is the 'traditional' 5V versions of these and somewhat more rare 3.3V versions (these have -V3 suffix in the model/part number if I recall correctly). So make sure replacement chip is matching voltage (plugging a 3.3V chip on 5V socket won't work...)

author: Ijaz
author_rank: Contributor
timestamp: February 20, 2021, 08:34:06 am
content: If you have an ISA slot PC, then you can construct a simple interface where you can use this DOC as a Hard drive in the PC and just copy, paste or format it like you do in DOS.Another very similar design can be found here:https://easyeda.com/atcurtis/isa-diskonchip-low-profile

author: pietro
author_rank: Newbie
timestamp: December 19, 2024, 09:53:38 pm
content: Hi Sequola,I have read your post on How to copy DiskOnChip.I have an age-old device working with PC/104 industrial motherboard with DiskOnChip2000 memory. When I start the motherboard, it starts the DOS software on DOC.Now I need to copy DiskOnChip memory.Actually I have two PC/104 motherboards having DOC socket and also IDE HDD connector:An ISA SBC-456 and a PCM3336 - both have IDE (mini?) HDD and FDD connectors.How can I copy DiskOnChip?Is it possible to make a DOS 1.44 floppy and set A drive to boot first from it? Then will I see the content of DiskOnChip and mamy I copy it to an IDE HDD? Or shall I make an image from it first?I have never doen it before..ThanksPeter