Table of Contents
Advertisement
Port 7 (P7)
This port is also used for address bus signal A23; DRAM RAS signals RAS2 and RAS1; and chip
select signals CS3 to CS0.
Port 8 (P8)
This port is also used for analog signal inputs AN3 to AN0 and external interrupt inputs IRQ7 to I
RQ4.
Port 9 (P9)
This port is also used for extension mode setting signals EXMOD1 and EXMOD0; memory write
signals WE1 and WE0; memory read signal RE; bus authority request signal BR; data acknowledge
signal DK; and system clock SYSCLK.
Port A (PA)
This port is also used for address bus signals A[7:0], and address/data signals ADM[7:0].
Port B (PB)
This port is also used for address bus signals A[15:8], and address/data signals ADM[15:8].
Port C (PC)
This port is also used for address bus signals A[19:16].
I/O Ports
15-3
Advertisement
Table of Contents
