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The OS9 System Programmer's Manual is also a good source of information. It has a relatively large section on writing block device drivers, and it is available from the download section of this site. Thanks for that. Chapter 6 covers the file system. It looks to support 4GB drives! :shock: Very for...

Dragon ROM cartridges are pretty simple things. The ones that I have seen just contains a standard 2764 8k EPROM and some address decoding logic, usually a single standard TTL IC. 2764 EPROMs are still available from good suppliers of electronic components. No need to resort to eBay for these yet.....

For more information about OS-9, or rather a modern "OS-9 compatible" operating system, you should check out NitrOS-9 at http://www.nitros9.org/ There is also loads of OS-9 stuff (too much for a cursory glance to see if anything is relevant) at ftp://www.rtsi.com/OS9/ Thanks for the links. I've jus...

Where do I find out about the latest Dragon homebrews? Does anybody have links to interesting hardware/software homebrew projects? On the subject of homebrews, how are they normally distributed? On disk, tape or cartridge? If its cartridges how do you go about getting them for recycling? A search of...

I never really got into OS-9 - I tried it enough to appreciate its architecture, but pretty much everything I ever did with the Dragon demanded full control. An OS-9 only solution would be the most elegant, as an OS-9 module could provide direct access to files as though it were a hard disk, but I ...

There's an article on pages 12 and 13 of the August 1988 issue of Dragon User that may be of some interest: it deals with OS-9 and hard drives. Thanks for that. At least its possible to create a driver for OS9 :). I wonder if the "crashes" that the author reported were down to the driver or the tec...

I can see 2 solutions :- 1) Full FAT16/32 support. Files would be seen by the Dragon as if they were stored natively e.g. you would copy "FRED.BAS" onto the memory card on the PC and the Dragon would aslo be able to read "FRED.BAS". I'm not sure if this would work on legacy Dragon apps because they'...

Thanks for the information. What about the software to drive them on the Dragon? I might just have to design my own hardware. Its a long time since I've done any 6809 coding tho. That was one of the reasons I wanted a Dragon :D. If such a device was made available would anybody else be interested in...

I'm looking to get a Dragon 32/64 at some point in the near future and I was wondering what the modern storage options are. What has replaced the original floppy drive system? Is there a modern MMC/SD solution? I haven't found anything Dragon specific so I'm assuming that there is a Coco-1 solution ...