The SWTPC 6800/6809 Emulator was designed to run 6800 and 6809 programs written for the SWTPC 6800 and 6809 machines without any modification at all.  This is accomplished by emulating all of the hardware of original machine not just the processor and OS. The emulator will correctly execute all of the instructions of the microprocessor being emulated except the 6809 SYNC instruction. The peripheral hardware that is emulated is the hardware found in the systems that I personally own and/or have knowledge of.