DEC Digital Alpha VME 4/224 User Manual page 218

Table 9–10 (Cont.) Super I/O Register Address Space Map
Address Offset
Read/Write
COM2 Serial Port Registers
2F8-R 0DLAB=0
2F8-W 0DLAB=0
2F8 0DLAB=1
2F9 1DLAB=0
2F9 1DLAB=1
2FA-R
2FA-W
2FB
2FC
2FD
2FE
2FF
COM1 Serial Port Registers
3F8-R 0DLAB=0
3F8-W 0DLAB=0
3F8 0DLAB=1
3F9 1DLAB=0
3F9 1DLAB=1
3FA-R
3FA-W
3FB
3FC
3FD
3FE
3FF
9–20 Nbus
Physical
Address Register
1 C000 5F00 COM2 receiver buffer register
1 C000 5F00 COM2 transmitter holding register
1 C000 5F00 COM2 divisor latch register (LSB)
1 C000 5F20 COM2 interrupt enable register
1 C000 5F20 COM2 divisor latch register (MSB)
1 C000 5F40 COM2 interrupt identification register
1 C000 5F40 COM2 FIFO control register
1 C000 5F60 COM2 line control register
1 C000 5F80 COM2 modem control register
1 C000 5FA0 COM2 line status register
1 C000 5FC0 COM2 modem status register
1 C000 5FE0 COM2 scratch pad register
1 C000 7F00 COM1 receiver buffer register
1 C000 7F00 COM1 transmitter holding register
1 C000 7F00 COM1 divisor latch register (LSB)
1 C000 7F20 COM1 interrupt enable register
1 C000 7F20 COM1 divisor latch register (MSB)
1 C000 7F40 COM1 interrupt identification register
1 C000 7F40 COM1 FIFO control register
1 C000 7F60 COM1 line control register
1 C000 7F80 COM1 modem control register
1 C000 7FA0 COM1 line status register
1 C000 7FC0 COM1 modem status register
1 C000 7FE0 COM1 scratch pad register
(continued on next page)