Register Set - NEC VR4181 mPD30181 User Manual

16.3 Register Set

The KIU registers are listed below.
Physical address
0x0B00 0180
0x0B00 0182
0x0B00 0184
0x0B00 0186
0x0B00 0188
0x0B00 018A
0x0B00 018C
0x0B00 018E
0x0B00 0190
0x0B00 0192
0x0B00 0194
0x0B00 0196
0x0B00 0198
State of interrupt requests caused by KIU is indicated and can be set in the following registers, which are included
in the ICU (refer to CHAPTER 9 INTERRUPT CONTROL UNIT (ICU) for details).
Physical address
0x0B00 0086
0x0B00 0092
CHAPTER 16 KEYBOARD INTERFACE UNIT (KIU)
Table 16-2. KIU Registers
R/W Register symbol
R KIUDAT0
R KIUDAT1
R KIUDAT2
R KIUDAT3
R KIUDAT4
R KIUDAT5
R KIUDAT6
R KIUDAT7
R/W KIUSCANREP
R KIUSCANS
R/W KIUWKS
R/W KIUWKI
R/W KIUINT
Table 16-3. KIU Interrupt Registers
R/W Register symbol
R/W KIUINTREG
R/W MKIUINTREG
User's Manual U14272EJ3V0UM
Function
Scan line 0 keyboard data register
Scan line 1 keyboard data register
Scan line 2 keyboard data register
Scan line 3 keyboard data register
Scan line 4 keyboard data register
Scan line 5 keyboard data register
Scan line 6 keyboard data register
Scan line 7 keyboard data register
Scan control register
Scan status register
Key scan stable time register
Key scan interval time register
Interrupt register
Function
KIU interrupt indication register
KIU interrupt mask register
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