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User’s Manual
90 ECB-870 User’s Manual
I/O Port Description Note
0000h-000Fh Direct memory access controller
0081h-0083h Direct memory access controller
0087h-0087h Direct memory access controller
0089h-008Bh Direct memory access controller
008Fh-0091h Direct memory access controller
00C0h-00DFh Direct memory access controller
0060h-0060h PC/AT Enhanced PS/2 Keyboard (101/102-Key)
0064h-0064h PC/AT Enhanced PS/2 Keyboard (101/102-Key)
0378h-037Fh Printer Port (LPT1)
0778h-077Bh Printer Port (LPT1)
03F8h-03FFh Communications Port (COM1)
02F8h-02FFh Communications Port (COM2)
03F0h-03F5h Standard floppy disk controller
03F7h-03F7h Standard floppy disk controller
0061h-0061h System speaker
0070h-0071h System CMOS/real time clock
00F0h-00FFh Numeric data processor