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USERS GUIDE
The SIOC board allows the selection of any USART clock
rate between 15 Hz and 56 KHz, allowing data transfer rates
of .23 baud to 56K baud.
Designed to piggyback mount on the SIO board, the SIOC
allows the user to select either the standard clock rates
provided b y the SIO board or the user-generated SIOC rate.
The SIOC may be easily mounted on the front of the SIO
board, or the user may save one card slot by mounting
the SIOC on the back of the SIO, and inserting the com
bination in the last slot of the mother board.
the SIOC on the back of the SIO board, the board rate
select socket (B-ll) must be soldered to the back of the
SIO board, and the SIOC's binary divisor and clock jumper
sockets should be mounted on the back of the SIOC board.
Jumper socket A-5 allows the selection of 8251 clock rates.
Either the SIO standard rates or the SIOC generated rates
may be jumpered to channels A or B.
identically with Bll on the SIO board.
C h a n . B Clk
Chan. A Clk
SIOC OUTCLK
75 A
As with socket Bll on the SIO board, jumpers should be placed
to connect the appropriate clock to the proper channel clock
input.
To select a binary divisor, determine the desired USART
clock rate, remembering that this rate may be 1, 16 or
64 times the desired final baud rate, as program selected
by the mode byte output to the USART.
9A - IQ
SIOC BOARD
9
110 A
8
10
7
150 A
11
6
300 A
12
600 A
5
13
4
1200 A
14
3
2400 A
15
2
4800 A
16
1
9600 A
SIOC Board Kev. ^
Users Guide
To mount
This jumper is arranged
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