[jesspren6]

I was wanting to know a program in which you can build your own pc and run it virtually, and a program like the same thing, except you virtually run and test you own virtually made circuits.
Help would be apreciated.

[office politics]

why not do the real thing?

http://www.labtech.org/product/it/cmm/cm5.htm

CMM-68000 Trainer is a powerful and cost-effective single-board microcomputer
based on Motorola 68000 CPU supported by Motorola peripheral chips. The trainer
is a valuable aid for teaching in academic institutions, software and hardware
development in research institutions and R&D labs. The powerful system
monitor includes one-line assembler for mnemonic entry, disassembler and
Centronics printer interface driver in addition to the user friendly set of
debug monitor command. ABORT facility permits graceful recovery, preserving the
complete user context, from “STUCK” programs