AngelX register specs reverse engineered from the e800.

  0x004: Control / power management?
     1: interrupt enable
     9: must be set (?)

  0x010: Interrupt Status reg A
    12: slot 0 service request
    13: slot 1 service request

  0x018:
    write 0x3030 to ack interrupt

pcmcia slot 0 (add 0x100 for slot 1 regs):
  0x30c: Socket status  (possibly not accessed by CE tho)
     0:  seems to correlate with event1 IRQs.
     2:  goes low on insert (later than 3: though) (used as CD)
     3:  goes low on insert
     4:  acts like RDY - goes low if card present AND powered
  0x314:  event source
     0: EVENT0 service request
     1: EVENT1 service request
     7: EVENT7 service request
  0x334:  event ACK
     0: write with bit set to ack EVENT0
     1: write with bit set to ack EVENT1
     7: write with bit set to ack EVENT7
  0x31C: event enable A
     0: EVENT0 enabled if set
     1: EVENT1 enabled if set
     7: EVENT7 enabled if set
  0x32C: event enable B (write before event enable A)
     0: enable EVENT0
     1: enable EVENT1 and EVENT7

 EVENT0 is CF IRQ
 EVENT1 is RDY (probably)
 EVENT7 is card insert/eject (at least, possibly more)