Changes
Z80
,/* Registers */
|-
| IX, IY (Index Registers) || 16-bit || Used for indexed addressing || Can be split into IXH/IXL, IYH/IYL for 8-bit access
|-
| IM (Interrupt Mode) || 2-bit || Specifies the interrupt mode (0, 1, or 2) || Controls how interrupts are handled:
* IM 0: External devices provide interrupt vectors.
* IM 1: Fixed vector at 0038h.
* IM 2: Vector provided by I register and external data.
|-
| I (Interrupt Vector) || 8-bit || Holds base address for interrupt mode 2 || Combined with external data to form an interrupt vector
