As with any SETUP (or “WRITE”) command, you can always check to see
that the command was effective by interrogating for the setup value you
just specified. In this case, you would enter the corresponding “READ”
command of
SRC 898 [CR]
If the above “WRITE” command was effective, you should get an answer
of “LIM,LAT.” If this is not the answer you get, you will need to re-enter the
SETUP command.
NOTE: In Section 13, we will want Bit No. 899 to be controlled by “N
ONLATCH-
ING LIMIT LOGIC.” We do NOT have to apply an
SRC command to this bit,
however, as we just did to Bit No. 898. As we will see, the reference to any
given bit by one of the three “LIMIT LOGIC” commands automatically sets the
source of that bit to “N
ONLATCHING LIMIT LOGIC.”
12.b INITIALIZATION OF OPTIONAL MODEL 10BIO-16
IF YOU DON’T HAVE A MODEL 10BIO-16 UNIVERSAL LOGIC I/O CARD,
YOU CAN SKIP THIS SECTION AND PROCEED DIRECTLY TO SECTION 13,
BELOW.
Your system’s 1000 logic bits are divided into “BIT GROUPS” of sixteen bits
each. The first bit group consists of Logic Bit Nos. 0 through 15; the second,
of Bit Nos. 16 through 31; the third, of Bit Nos. 32 through 47; etc. A complete
table of bit groups is given in Section 2.H of the
System 10 Guidebook.
Before you use the
SRC command to specify which of the 10BIO-16’s LOGIC
I/O PORTS are to be INPUTS and which are to be OUTPUTS, you must first
“initialize” the 10BIO-16 card. You will use the
BSLOT(BSL) command to
establish a one-to-one correspondence between the 10BIO-16’s sixteen
Logic I/O Ports and the sixteen members of a particular system bit group.
1. Remove the mainframe’s upper front bezel, if it is not already off, and
determine which B SLOT your 10BIO-16 card is in.
2. Make sure the EEPROM Write Protect function is still enabled, and enter
from the keyboard a command of
BSL s = 1, k [CR]
Here, “s” is the number of the B SLOT occupied by the 10BIO-16 and “k” is
the number of a currently unused system BIT GROUP.*
For example, to assign the sixteen bits of Bit Group No. 3 (= Bit Nos. 32
through 47) to the Logic I/O Ports of the 10BIO-16 in B SLOT No. 4, you
would command
BSL 4 = 1, 3 [CR]. In this case, Bit No. 32 would now
correspond to the 10BIO-16’s Port No. 0, Bit No. 33 to Port No. 1, Bit No.
34 to Port No. 2, etc. (take a look at Fig. 3.B.2.2 in Section 3.B.2.c of the
System 10 Guidebook).
Once you’ve assigned the 10BIO-16 to a specific system bit group, you
must use the
SRC command to indicate which of the card’s sixteen ports
are to be dedicated to LOGIC
INPUTS. ANY LOGIC I/O PORT TO WHICH A
SRC COMMAND HAS N
OT BEEN APPLIED WILL BE AUTOMATICALLY
DESIGNATED AS AN
OUTPUT PORT. See Section 3.B.2 of the System 10
Guidebook
for full details.
B - 25
SETUP OF LOGIC BITS AND LOGIC PORTS
“O
NTHE
A
IR
” (B-S
IZED
)
* The “1” in the command argument assigns a B-card “type” code of “1” to the 10BIO-16.
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