the 80387SX math coprocessor. The RSX still retains the Tandy 1000 3-voice sound hardware and DAC, though the I/O address for the 3-voice sound chip was moved, rendering many games compatible with it unable to play music unless modified. The DAC can be used to emulate the Covox Speech Thing via MS-DOS device drivers for limited sound support. This works with Chuck Yeager's Air Combat. Windows 3.xx sound device drivers are available that work in Windows 95 (with full 9MB RAM) on Tandy 1000 RSX. The ACUMOS VGA graphics can be software-updated with Cirrus Logic BIOS (via MS-DOS driver) to allow VESA/SVGA to function in Windows 95, as the Windows 3.xx Tandy VGA drivers are insufficient for Windows 95. Selected Tandy 1000-enhanced software Major software publishers and makers of game and educational software, such as Sierra and Broderbund, offered software titles that support Tandy's 16-color graphics, 3-voice sound, and other Tandy-specific hardware features. These enhancements offer a superior graphics and sound experience for Tandy 1000 owners over CGA graphics or PC speaker sound widely used on most DOS PCs. Software that supported Tandy's graphics are typically labelled on the package as Tandy 1000/PCjr compatible. Although the Tandy 1000 can run most DOS software, the below programs are known to specifically support Tandy 1000 enhanced features. These programs require DOS to run. Tandy shipped its own version of DOS. The 1000 uses the main memory for graphics, so most programs require 640k or 768k to run. The enhanced graphics and sound often tax the processor, so an 80286 processor or faster is often recommended for best results. There are also games and educational software that supports second-generation Tandy 1000 graphics and sound, which offers 640 by 200 by 16 colors, and 8-bit DACs, found only on the 1000 SL/TL series. Examples of such software includes Mario Teaches Typing, Star Trek, Freddy Pharkas: Frontier Pharmacist, and Sargon. References External links Radio Shack Tandy Computer Support, the official support site for Tandy Computers (product search page) The Tand-Em Project, a Tandy 1000 emulator project DOSBox MS-DOS, Tandy 1000, PCjr Emulator MESS Multiple emulator with Tandy 1000HX support Tvdog's Archive, Major archive of Tandy 1000 programs and documentation Tandy 1000 BASIC Programs, Games and applications The OldSkool Shrine, Tandy 1000 History And Memories Tandy 1000 Webring, More Sites On The Tandy 1000 Low End Mac's retrospective on the Tandy 2000 computer and Tandy 1000