

The dimensions are 11x4x10 blocks. It has 4 registers and only one operation that is subtract from the blue register, this is how the registers are laid out:
- reg1 + reg2: lime (reg1 is the rightmost one)
- reg3: blue
- reg4: orange
and it has these instructions:
- 0x1: wipe + write to reg4 from reg3
- 0x2: wipe reg3
- 0x3: sub reg3 by reg2
- 0x4: write to reg2 from reg4
- 0x5: wipe reg1
- 0x7: write to reg1 from reg3
- 0x8: wipe reg2
- 0x9: write to reg1 from reg2
- 0xa: write to reg3 from reg1
- 0xd: write immediate to reg3
Here it is doing the fibonacci sequence in the gif, look at reg1 and reg2 for the output
by the-forestee