BR16Z — opcode $AB¶
BR16Z addr — branches when broken (never branches on hardware, review H-3)
| Operands | Bytes | Microcode steps |
|---|---|---|
| addr | 3 | 18 |
One column per microcode step. The control lines are read from the microcode image; the address bus, data bus and registers at the bottom are a model. How to read the diagrams · the instruction set