Advanced Micro Computers Am96/4016 User Manual page 50

TABLE 4-1. PERIPHERAL ADDRESSES
Am8255A buffered user ports
Control port
Port C
Port B
Port A
4-6
FFC-FFF
FFB-FFB
FF4-FF7
FF3-FFO
FF3
FF2
FF1
FFO
FEF-FEC
FEF
FEE
FED
FEC
FEB-FEB
FEB
FEA
FE9
FEB
FE7-FE4
FE7
FE6
FE5
FE4
FE3-FEO
FDF-FEC
FOB-FOB
FD7-FD4
FD3-FDO
FD3
FD2
FD1
FDO
FCF-FCC
FCF
FCE
FCD
FCC
N/C
N/C
N/C
Am9551 RS232 port
Control
Data
Control (same as FEF)
Data (same as FEE)
Am9551 RS232 or TTY port
Control
Data
Control (same as FEB)
Data (Same as FEA)
Am8253 counter time
Mode control
Counter 2
Counter 1
Counter 0
Keyboard return lines
Keyboard scan lines
Single-step control
Breakpoint register
LED display
20th character (left most)
19th character
18th character
17th character
16th character
15th character
14th character
13th character
,
.
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