IBM Series 1 User Manual page 139

Figure 4-4. state and timing diagram for possible receive
operations
0
LA. & R
I~
Normal Normal
receive receive
I.-- T RO - I TRI
CD
LA. & R
/
I
"A"
Key:
"A" "B"
"c"
000
LA.
Normal
Overrun
receive
receive
"B"
0
I
Normal
Overrun
receive
receive
"C"
Entry points on right side of diagram
Interrupt with circled condition code
Interrupt accept
0
LA. & R
I~
Normal
receive
0
LA.
IL-
Normal
receive
LA.
I
Overrun
receive
I.A. & R
Normal
receive
I.A. & R
I
Overrun
receive
I.A.
I
Overrun
receive
Overrun
receive
LA.
&
R
Interrupt accept and execute read command
Baud rate
1Ro
(milliseconds)
1R
(milliseconds)
9600 .936
.208
4800. 1.87 .416
2400 3.74 .832
1200 7.49 1.66
600 14.98 3.33
300 29.96 6.66
200 44.94 10.0
150 59.9 13.3
110
81.9 18.2
100 89.88 20.0
75 119.08 26.6
50 179.76 40.0
T RO and TR are ±0.1 %
I
4-16 GA34-0033
0
I
To point "A"
0
I
To point "A"
0
I
To points "B"
0
I
To point "A"
0
I
To points "B"
0
I
To points "C"
To points "C"
(
~
\
;
I .~
,
,