DracoDS v1.8 is released. DracoDS is a Tandy Color Computer (CoCo 2) and Dragon 32 emulator for your DS/DSi/XL/LL handheld. The Dragon and Tandy machines were quite similar - both using the same Motorola reference design and, when you really look under the hood, it's pretty clear that the Dragon reverse-engineered some of the Tandy hardware such that it was virtually identical in some spots (e.g. Cartridge pinouts). There are some differences - mainly in the keyboard matrix handling and in some of the disk controller handling. To that end, this emulator is primarily a Tandy CoCo 2 emulator with 32K standard and 64K expanded support but it also works for the Dragon 32 and can be configured as such.

DracoDS Changelog:
Improved ADC/SBC to include the carry flag in the Overflow checks.
Improved green artifacting so Galactic Attack (and probably some others) looks more correct.
Improved PIA interrupt disable handling to clear the pending interrupt line.
Improved unmapped IO handling to return last bus value for better accuracy.
Improved interrupt handling for Cart for improved accuracy.
Minor refactor and cleanup as time permitted.

Download: DracoDS v1.8
Source: Here