The manual mentions `LDB` instruction a couple of times, but as per https://docs.google.com/spreadsheets/d/1AbANmvxt23ur9o9otFnmQGSkAjRAZDaQYwnblXc1SJk/edit?usp=sharing there's no such instruction. Looks like a typo and probably `LDA` was intended here.
The manual mentions
LDBinstruction a couple of times, but as per https://docs.google.com/spreadsheets/d/1AbANmvxt23ur9o9otFnmQGSkAjRAZDaQYwnblXc1SJk/edit?usp=sharing there's no such instruction.Looks like a typo and probably
LDAwas intended here.