Difference between revisions of "Dragon DOS"
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| − | Eurohard wanted to release an updated Dragon DOS for the Dragon 64 that contained all the known bugfixes to date and to avoid confusion with the 2.x series numering they jumped straight to V4.0. A ROM image of this is available for download. | + | Eurohard wanted to release an updated Dragon DOS for the [[Dragon 64]] / [[Dragon 200]] that contained all the known bugfixes to date and to avoid confusion with the 2.x series numering they jumped straight to V4.0. A ROM image of this is available for download. |
Revision as of 17:00, 20 July 2010
Dragon DOS 1.x
Dragon Data Ltd comissioned The Micro Works to write the original Dragon DOS software, some early examples of this including the (c) Micro Works signature can be found in the downloads area. There were a number of bugs in the 1.x series and articles were published in Dragon User with patches to the ROM code to correct the worst of these. The most common version is 1.0 although 1.7 has also been seen but the source of 1.7 and the differences are unknown.
Dragon DOS 2.x
For the Dragon Alpha a modified version of Dragon DOS was required, one that would load into RAM from disk rather than exist on a ROM. Vitaway Ltd were given the source code for Dragon DOS 1.x and Dragon DOS 2.x was created. A VDK disk image of Dragon DOS V2.F for the Dragon Alpha can be found in the downloads area. From looking at segments of the original source code it would appear that Vitaway Ltd implemented the changes as options so that the source code could be assembled for a Dragon ROM or RAM implementation - There is also hints that it would also assemble to work on a Tandy CoCo.
Dragon DOS 4.x
Eurohard wanted to release an updated Dragon DOS for the Dragon 64 / Dragon 200 that contained all the known bugfixes to date and to avoid confusion with the 2.x series numering they jumped straight to V4.0. A ROM image of this is available for download.
