![]() ![]() It has a socket so can be upgraded with a NEC V30. The Tandy 1000 SL and SL/2 have an Intel 8086 processor running at 8 MHz. As with many PC clones of the time, MS-DOS 4 was problematic and generally avoided. The machines could also run 'normal' MS-DOS 3.x, 5.x and 6.x and Windows 2.x and 3.0 operating systems, although Windows was limited to real-mode operations. The SL and TL also shipped with MS-DOS 3.3 and DeskMate 3 in ROM, and had a serial EEPROM memory chip to store BIOS settings. ![]() The SL/TL lines allowed the built-in floppy controller, parallel port and serial ports to be disabled, which was not the case with previous models. Sound capabilities now include an 8-bit mono DAC/ADC, which was similar in function to parallel port audio devices (such as the Covox Speech Thing and Disney Sound Source), but expanded to support DMA transfer, microphone input and sampling rates up to 48 kHz.
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