Ports - ADC SUPER SIX S-100 Technical Manual

3.2.21
Port 18
This write-only port acts as the set-baud-rate port and allows the user to perform a
software reset of the baud rate for SIO channels
A
and
B.
The bit significance of this port
is shown below.
D7
=
MSB; DO
=
LSB
510 channel A baud bit A
--~
SIO channel A baud bit B
' - - - - - - 510 channel A baud bit C
' - - - - - - - - - . 5 1 0 channel-A baud bit
D
.....- - - - - - - - -.. 510 channel B baud bit A
.....- - - - - - - - - - - 510 channel B baud bit
B
.....- - - - - - - - - - - - - 510 channel B baud bit C
110------------------1
510 channel B baud bit D
The baud rates equated with bit settings A, B, C, and D are shown in Table 3-2. These are
identical for both channel A and channel B.
BIT BIT BIT BIT BAUD
D
C
B A
RATE
0
0 0 0 50
0
0 0
1 75
0
0
I
0 110
0 0
I I
134.5
0 1
0 0 150
0
1 0
I 300
0
I 1 0 600
0
1 I
1 1200
1
0 0 0 1800
1
0
0 1
2000
1
0 1
0 2400
1 0
1
I 3600
I 1 0 0 4800
1
1
0 1
7200
1 1 1
0 9600
1
1
1 1
19,200
Table 3-2. SUPER SIX Port 18 Baud Rate Settings
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