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------....----------....---------------------
--------------------
----- ----
- - - - - - - - - - - - -
0
Op
Code
F3
OCode
DA
M
78
11
12
.----
N
13 1516
Control
Code
23
1-----+-----+--+-----t~---+-------+---------------
- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - 1
BSCA
5471
Printer
Key-
board
~1_0_0_0-+-----t---+------+---t--D_e_v_i_ce
__ address
BS~~-(8_)
___________________ __,
0001
I
0
Must be zero
- - - - - - + - - - - - - - + - - - - - - + - - - - - - < 1 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - i
0
1
000
Control
,__0_0_1-----+-----+-R-e_c_e-ive __________________ -----------------
~6-+------+-----j
-Transmit-and receive
- - - - - - - - - - - - - - - - -
1-----+-----+-------+------------------------------------------- -
011
Receive initial
l - - - - - - + - - - - - - - - i - - - - + - - - - · · - - - - - - - - - - - - - - - - - · - - - - - - - - - - - - - - - - - 1
100
Auto cal I
.__1_0_1-+----+-----+---1 nvalicf- -------------- _______________ _,
11
o
Loopte-st__________________
-------<
1---1-1-1--+-----+--------+--1-r1~a1ici--
----------- -----------
- - - - - - - - - - - - - - - - 1
1xxx
Ox xx
1
0
1
0
1
0
x
x
If a -1. bits 1
:2~
3.
and--~foTc-on-t~o-1- c-od~~re--;if~-~-tive~-~
If a 0, bits 1, 2, 3, and 4 of control code are disregarded.
Enable BSCA
Disable BSCA
Enable test mode
Disable test mode
Enable step mode
Disable step mode
x
Spare (no effect)
1
Start two second timeout
0
Cancel two second timeout
1
Enable interrupt
0
Disable interrupt
1
Reset interrupt request
0
No action
1 - - - - - + - - - - + - - - - - - + - - - - - - - - - - - - - - - - - - - - - -
-
- -
000
OOxx
Ox xx
1
0
1
0
1
0
1
0
1
000
1
0
1
0
1
1
0
1
0
1
1
Note: The control code is effective with every "N" code
function except that the start two second timeout must
be used only with the control function ("N"
=
000).
Device address - printer keyboard - ( 1)
Select ke_yboard
Must be zero - All other N codes invalid
Must be zero. Zero indicates unused position.
Turn on request pending indicator
Turn off request pending indicator
Turn on proceed indicator
Turn off proceed indicator
Enable request key interrupts
Disable request key interrupts
Enable data key interrupts
Disable data key interrupts
Reset
r~uest
or data ke_y interru_Q_ts
Select _£_rinter
Must be zero - All other N codes invalid
Start print
Don't print
Start carrier return (and index)
Don't carrier return
Force a printer feedback switch response
Force a printer long function switch response
Not used - Must be zero
Enable printer interrupt
Disable printer interrupt
Degate printer magnets
Reset printer interrupt
Figure 1-7. (Part 3 of 3) Start 1/0
(SIO)
Instruction
5410 FEMM <l/71)
1-11
ll
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