Bingo, the best part of these games (TIS100 and HRF in particular) is having a well chosen instruction set and glossing over the other annoying parts of working

Bingo, the best part of these games (TIS100 and HRF in particular) is having a well chosen instruction set and glossing over the other annoying parts of working this close to the hardware. I want the puzzle to be figuring out how to make do with only 2 jmp variants, not remembering to use a different instruction to access memory below address 0x100