Appendix CHost Link Unit Memory Area Allocations
121
Contents of CPU Bus Unit System Setup for Port 2
15 14 13 12 11 10 9 8 76543210
0
Data retries (0: no; 1: yes)
Communications method (0: full duplex; 1: half duplex)
Xon/Xoff control (0: no; 1: yes)
Data length (0: 7 bits; 1: 8 bits)
Word: 1500 + (25 x unit number) + 7 to 8
Bit
+7
15
9,600
1,200
2,400
4,800
9,600
19,200
Unused
14 13
000
001
010
011
100
101
110
bps
111
Even number
Odd number
No parity
11 10
00
01
10
11
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Bit
+8
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Bit
+9
Stop bits (0: 2 bits; 1: 1 bit)
Baud rate
Parity
Xoff code Xon code
Transmission delay time
Unit No.
Port Status
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000000 0000
1: Communications port 1 is busy.
1: Communications port 2 is busy.
1: Communications port 1 send is busy.
1: Communications port 2 send is busy.
Word: 1500 + (25 x unit number) + 12
Bit
+12
1: Port 2 host computer is busy.
1: Port 1 host computer is busy.
Number of Errors at Port 1
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00
1: FCS error
1: Invalid data
1: Overrun error
1: Framing error
1: Parity error
1: Break detect
Word: 1500 + (25 x unit number) + 13
Bit
+13
Number of errors at port 1