These are sample programs that don't do much more than push data to the output. These are not practical useful applications and only serve to demonstrate and exercise the CPU.
The first program simply loads a value from a register, increments it, outputs the value and writes the value back to the register. The process is repeated continually. The output is connected to 4 LEDs.
Numonic Address Data Instruction Comments
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Runs in segement zero.
LIT 1 0000 0000 0001 0000 Put 0 in the accumulator.
REG 0000 0001 0000 0110 Select register A.
LOAD 0000 0010 0000 0010 Load value into accumulator from register A.
OUT 0000 0011 0000 1110 Send accumulator value to output.
INC 0000 0100 0000 0100 Increment accumulator.
STORE 0000 0101 0000 0011 Store accumulator back to register A.
RST 0000 0110 0000 1001 Restart program counter.
This program stores a sequence of values in the registers and then outputs them in sequence. The resulting effect is the output lines going high in a 1, 2, 4, 8 order. The program continuously loops from segments 2 to 3. This can be seen when LEDs are connected to the outputs.
Numonic Address Data Instruction Comments
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Runs in 4 memory segments.
Segment 0. Loads registers A and B.
LIT 0 0000 0000 0000 0001 Put 0 in the accumulator.
REG 0000 0001 0000 0110 Select register A for write.
LIT 1 0000 0010 0001 0001 Put 1 in the accumulator.
STORE 0000 0011 0000 0011 Put 1 in register A.
LIT 1 0000 0100 0001 0001 Put 1 again in the accumulator.
REG 0000 0101 0000 0110 Select register B for write.
LIT 2 0000 0110 0010 0001 Put 2 in the accumulator.
STORE 0000 0111 0000 0011 Put 2 in register B.
CMPL 0000 1000 0010 0111 Compare to last accumulator value. Set equal flag.
LIT 1 0000 1001 0001 0001 Put 1 in the accumulator.
JUMPE 0000 1010 0000 1011 Jump to segment 1.
Segment 1. Loads registers C and D.
LIT 2 0001 0000 0010 0001 Put 2 in the accumulator.
REG 0001 0001 0000 0110 Select register C for write.
LIT 4 0001 0100 0100 0001 Put 4 in the accumulator.
STORE 0001 0011 0000 0011 Put 4 in register C.
LIT 3 0001 0100 0011 0001 Put 3 in the accumulator.
REG 0001 0101 0000 0110 Select register D for write.
LIT 8 0001 0110 1000 0001 Put 8 in the accumulator.
STORE 0001 0111 0000 0011 Put 8 in register D.
CMPL 0001 1000 1000 0111 Compare to last accumulator value. Set equal flag.
LIT 2 0001 1001 0010 0001 Put 2 in the accumulator.
JUMPE 0001 1010 0000 1011 Jump to segment 2.
Segment 2. Sends registers A and B to output.
LIT 0 0010 0000 0000 0001 Put 0 in the accumulator.
REG 0010 0001 0000 0110 Select register A for read.
LOAD 0010 0010 0000 0010 Load register A to accumulator.
OUT 0010 0011 0000 1110 Output accumulator (register A).
LIT 4 0010 0100 0100 0001 Put 4 in the accumulator.
REG 0010 0101 0000 0110 Select register B for read.
LOAD 0010 0110 0000 1010 Load register B to accumulator.
OUT 0010 0111 0000 1110 Output accumulator (register B).
CMPR 0010 1000 0000 1000 Compare accumulator to register. Set equal flag.
LIT 3 0010 1001 0011 0001 Put 3 in the accumulator.
JUMPE 0010 1010 0000 1110 Jump to segment 3.
Segment 3. Sends registers C and D to output.
LIT 8 0011 0000 1000 0001 Put 8 in the accumulator.
REG 0011 0001 0000 0110 Select register C for read.
LOAD 0011 0010 0000 0010 Load register C to accumulator.
OUT 0011 0011 0000 1110 Output accumulator (register C).
LIT 12 0011 0100 1100 0001 Put 12 in the accumulator.
REG 0011 0101 0000 0110 Select register D for read.
LOAD 0011 0110 0000 1010 Load register D to accumulator.
OUT 0011 0111 0000 1110 Output accumulator (register D).
CMPR 0011 1000 0000 1000 Compare accumulator to register. Set equal flag.
LIT 3 0011 1001 0010 0001 Put 2 in the accumulator.
JUMPE 0011 1010 0000 1110 Jump to back to segment 2 - loop.
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(c) Jon Qualey, December 2006
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