Conditional jump instructions
In this video we program the microcode of the 8-bit breadboard computer so that it supports two conditional jump instructions: JC (jump carry) and JZ (jump zero). We also test out these new instructions and write several programs using them.
Comments (3)
Hey guys, new here but I personally loved this project and I actually made an Assembly compiler for this in python. I put it on GitHub if anyone wants to look at it. https://github.com/tayler6000/BenEater8BitAssembler Obviously, as this computer doesn't use EEPROM, you'd have to program an Arduino or a Pi to program the RAM on startup but it was still fun to make
How would floating point math be implemented on this machine?
Thanks for a great video! I had a bit of fun and implemented an 8 bit square root finder. I had a bit of a challenge fitting it into 16 bytes, so it requires a reset between runs, since I had to store the result by modifying an LDI instruction. The code is here: <a href="https://gist.github.com/klauspost/bdf58d25565d3f6d5d13019e16529a6b" rel="nofollow noopener" target="_blank">https://gist.github.com/klauspost/bdf58d25565d3f6d5d13019e16529a6b</a> I tested it using Luis Michaelis' emulator and it should work for all 8 bit inputs. It works by counting the number of times you can subtract the next odd number from your input.