Epson E0C6001 Technical Manual page 122

K00
K01
K02
K03
Address 0E8H
Fig. 3.8.1
K00–K03
Input interrupt circuit
• Interrupt factor flags
IK0 This flag is set when any of the K00 to K03 input interrupts
occurs. The interrupt factor flag (IK0) is set to "1" when the
contents of the input (K00–K03) become "1" and the data of
the corresponding interrupt mask register (EIK00–EIK03) is
"1".
The contents of the IK0 flag can be loaded by software to
determine whether the K00–K03 input interrupts have
occured.
The flag is reset when loaded by software. (See Figure
3.8.1.)
Address 0E0H
D0
D1
D2
D3
Input interrupt mask register
(EIK00–EIK03)
CHAPTER 3: PERIPHERAL CIRCUITS (Interrupt and Halt)
Input interrupt factor
flag register (IK0)
INT
(Interrupt request)
FF
Interrupt flag (I)
II-41