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DracoDS v1.8 is now available, serving as an emulator for Tandy Color Computer (CoCo 2) and Dragon 32 on DS/DSi/XL/LL handhelds. Both systems share similarities due to Motorola’s reference design, though they differ in keyboard and disk controller handling. The emulator mainly focuses on the Tandy CoCo 2, supporting 32K and 64K configurations, but can also be set for the Dragon 32. Key updates in this version include enhanced ADC/SBC overflow checks, improved graphics for games like Galactic Attack, refined interrupt handling, and other minor optimizations. Users can download the latest version to experience these improvements.
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DracoDS v1.8 has been released. DracoDS serves as an emulator for the Tandy Color Computer (CoCo 2) and Dragon 32, designed for your DS/DSi/XL/LL handheld devices. The Dragon and Tandy systems share many similarities, both derived from the same Motorola reference design. Upon closer inspection, it becomes evident that the Dragon reverse-engineered several components of the Tandy hardware, leading to significant similarities (for instance, cartridge pinouts). However, there are distinctions, particularly in how the keyboard matrix and disk controller are handled. This emulator primarily functions as a Tandy CoCo 2 emulator, supporting 32K standard and 64K expanded memory, but it is also compatible with the Dragon 32 and can be configured accordingly.
DracoDS Changelog:
Enhanced ADC/SBC to factor in the carry flag during Overflow checks.
Refined green artifacting for a more accurate presentation of Galactic Attack (and potentially other titles).
Updated PIA interrupt disable functionality to clear the pending interrupt line.
Improved handling of unmapped IO to return the last bus value for enhanced precision.
Upgraded interrupt handling for Cart, resulting in better accuracy.
Minor refactoring and cleanup whenever possible.
