Wang 5536 - Page 37

•
•
•
Clock
Rate
50
75
100
llO
134.5
150
200
600
1200
2400
4800
9600
Output
Character
Instruction OUT
Async •
USART
Clock Rate Clock
Select
Code Divider
X'40
1
X'80'
1
X'AO'
1
X'A9'
1
X'B9'
1
X'CO'
1
X'DO'
1
X'FO' 1
X'F8'
J.
X'FO'
0
X'F8'
0
X'FC'
0
to USART
for
Transmission
X I 15
1
Sync.
Clock Rate
Select Code
X'Ol'
X'80'
X'CO'
3402
A character to be transmitted is output to the USART. This clears the
transmitter ready condition and the in'terrupt condition which it causes.
If a transmission character of fewer than 8 bits is being used, the
character to be transmitted is assumed to be right adjusted in the byte
output from the accumulator •
Set USART Mode/Command Data
Instruction OUT X '35'
The interpretation of the byte of data output by the SET USART Mode/Conunand
instruction is determined by the state of the USART. Following a reset of
the USART, which can be caused by either a power-on condition or a bit in
the Command Word, the first byte output by this instruction is a Mode
Word. If the Mode Word selected asynchronous mode, all bytes subsequently
output by the instruction (unless they specify an internal reset) are
Command Words. If the Mode Word selected synchronous mode, the next one or
two bytes, as determined by the Mode Word, output by the instruction define
the synchronization pattern. All bytes subsequently output by the
instruction are Command Words.
Synchronous
Asynchronous
Mode Word
Mode Word
DO
0
DO CRD
Dl
0
Dl 1
D2
L1 D2
Ll
D3
L2 D3 12
D4
PEN D4
PEN
D5 EP DS
EP
D6
0
D6
Sl
D7 scs D7
S2
2-23