$FF48/65352:   IRQ Entry

FF48: 48        PHA
FF49: 8A        TXA
FF4A: 48        PHA
FF4B: 98        TYA
FF4C: 48        PHA
FF4D: BA        TSX
FF4E: BD 04 01  LDA $0104,X   ; 6510 Hardware Stack Area
FF51: 29 10     AND #$10
FF53: F0 03     BEQ $FF58
FF55: 6C 16 03  JMP ($0316)   ; Vector: BRK Instruction Interrupt Address

Jump from $FF53:

FF58: 6C 14 03  JMP ($0314)   ; Vector: Hardware IRQ Interrupt Address

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