Changes
6502
,/* Registers */
PHP (Push Processor Status) and PLP (Pull Processor Status) can be used to set or retrieve P directly via the stack.
Interrupts (BRK/NMI/IRQ) implicitly push P to the stack. Interrupts returning with RTI will implicitly pull P from the stack.
|-
| S (Stack Pointer) || 8-bit || Points to the current location in the stack || Stack is located in page 1 ($0100-$01FF), 8-bit S register is offset to this base
