SSEM
A Manchester Small-Scale Experimental Machine (SSEM) Emulator.
The SSEM was the first stored-program computer. A description of the machine can be found in its Wikipedia entry:
http://en.wikipedia.org/wiki/Manchester_Small-Scale_Experimental_Machine
LICENSE
See the LICENSE file.
USAGE
From a Tk console open the application by:
cd "the/src/directory"
source ssemgui.tcl
The GUI is divided in two sections.
The first section shows the contents of the registers and the memory:
- A Accumulator
- C Program Counter
- PI Current Instruction
- M Memory
- Addr The address of the memory cell
- Value The contents of the memory cell
- Inst The contents of the memory cell interpreted as an instruction
The second section contains the buttons that control the emulator:
- Step Execute the current instruction and stop
- Run Run the program until a stop instruction is executed
- Stop Stop a running program
The memory is initialized with the first program written for the SSEM, which computes the highest proper factor of 2^18. Just click 'Run' and see it working.