RadiSys EPC-26A/27 Manual page 61

B
I/O Addr
040
041
B
042
043
I/O Addr
060
061
064
PicoPower Redwood chip set emulating MC6818 of PC/AT
I/O Addr
070
071
PicoPower Redwood chip set emulating 74LS612 of PC/AT
I/O Addr
081
082
083
087
089
08A
08B
08F
Page B2
EPC-26A/27 Hardware Reference
Counter-Timer functions:
PicoPower Redwood chip set emulating 8254 of PC/AT
Functional group Usage
Timer Counter 0
Counter 1
Counter 2
Control (W)
Keyboard Port:
PicoPower Redwood chip set emulating PC/AT
Functional group Usage
Keyboard controller Data I/O register
NMI status NMI status
Keyboard controller Command/status register
Time-of-Day Clock:
Functional group Usage
Real-time clock RTC index reg / NMI enable
RTC data register
0
1
2
3
4
5
6
7
8
9
A
B
C
D
E
...
3F
DMA Page Registers:
Functional group Usage
DMA Channel 2 page register
Channel 3 page register
Channel 1 page register
Channel 0 page register
Channel 6 page register
Channel 7 page register
Channel 5 page register
Refresh page register
seconds
seconds alarm
minutes
minutes alarm
hours
hours alarm
day of week
date of month
month
year
status A
status B
status C
status D
RAM
RAM