6/20/2023 0 Comments Mitsumi quick disk drive beltJapanese homes are not known for being spacious, things tend to be optimally positioned/placed to fit perfectly in small nooks and crannies. You've also got "general environment", like where people placed the FDS in their homes during use, if they left the system on for long periods of time (internal heat), etc. I got a new FDS sometime later - same disks, works fine.Īnother thing that certainly would affect the belt would be humidity and environmental changes (consider moving from, say, Okinawa (warm part of Japan's southwestern islands) to Hokkaido (cold part of Japan)). I ended up giving said FDS to Matt Conte (of Nofrendo/cajoNES/nes6502/Nosefart fame), saying "it's yours, I hope you can fix it!" Unsure if he ever did. Adjusting some of the timing pots didn't help either (and I didn't want to mess with those too much anyway, it can actually make things worse if you don't know exactly what is wrong with the system. Cleaning off all the residue was difficult, but even after I did so and replaced it with a supposedly authentic belt, it still didn't work. It wasn't goop - it had melted and become rock hard, and was all over the inside of the system. Once I got it and confirmed it didn't work (always got an error when reading from disks that were definitively good), I opened it up and found the drive belt had literally melted sometime long in the past. The very first FDS I ever had was given to me by a friend living in Japan who found it in a storage closet of a small company he was working for. over time? Lots of things - one of which is heat. What affects the belt tension, length, etc. So a lot of FDS drives start acting wonky because of the belt. Replacing belts in the FDS, as I recall, was a common thing. all which affects overall timing (and you already know what happens if you get this wrong). The drives use a very specific kind of belt, made from a somewhat odd or unique rubber (or rubber-like mix), and are *extremely* sensitive to belt length, belt tension, any cruft/junk on the belt motor (this can happen if/when replacing an old belt), etc. Expanding on it a bit more, as well as presenting my own opinion: Please contact me if you would like to explore this further.I agree with Tepples. There is a great deal of technical information on the Mistumi QD drive included in documents on the Nintendo Famicon System - some of the information explains the interface between the game system and the disk controller, yet some of the information focuses on the disk and data structure. I would be willing to assist in design, development, or troubleshooting of such a project. Replacing the belt requires disassembly of much of the drive mechanism, and it is often necessary to re-align the head after replacement. The original drive from Mitsumi has a rubber drive belt that fails over time, rendering the device inoperable. Most notably, they are used in the Nintendo Famicon gaming system, which has a large and loyal community of supporters. These drives are also found in the Roland S-10, MKS100 and S-220, Korg SQ1-D and SQD-8, Akai S700 and X7000, and the Yamaha MDF1. I am an existing customer with an HxC for an Emax, and would like a solution to replace the Mitsumi 2.8" drive in my Akai S700 sampler. I too am very interested in an emulator for the Mitsumi 2.8" drive. Is there some kind of disk image somewhere ? I know that the Famicom Disk System used this kind of disk, but the track format is different no ? To be able to do something i really need more informations. Almost a fast version of a cassette tape. So overall there is no concept of an index or directory.not even sure their is a traditional dis controller. Unusually, the Quick Disk utilizes "a continuous linear tracking of the head and thus creates a single spiral track along the disk similar to a record groove." This has led some to compare it more to a "tape-stream" unit than typically what is thought of as a random-access disk drive. Quick Disk as used in the Famicom Disk System holds 64 kB of data per side, requiring a manual turn-over to access the second side. It was mainly used in the Faircom Nintendo game systems and the drive was made by Mitsumi. The Roland S-10, AKai X7000 SMith and Corona Wordprocessors. Randaj38 wrote:There isn't much info on the nature of the 2.8 Quick disk other than it was used in devices such as :
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