Section 5. Consoles And Power Control Panel; Consoles; Register Displays - Control Data 3100 Reference Manual

Section 5
CONSOLES AND POWER CONTROL PANEL
The 3100 Integrated Console and the 3101 and 3200 optional desk consoles enable a com-
puter operator to control and observe the operation of the computer. This section describes
the operator's controls and the significance of the visual indicators. Also included in this
section is a view of the Power Control Panel and a description of its operation.
CONSOLES
Basically, the optional desk consoles are identical to the Integrated Console. Operator
switches and keyboard controls on the consoles differ only in their physical placement.
This section is concerned primarily with the characteristics of the Integrated Console.
Refer to Figure 5-1.
REGISTER DISPLAYS
Communication Register
Data entered into any of the operational registers (except the ED register) must first pass
through the Communication register. Starting with the uppermost digit, data is entered into
the Communication register by first depressing a register switch and then depressing the
numeric keyboard swithces. An Active Digit indicator light is located directly above each
group of three binary lights which represent the octal digits in the Communication register.
Whenever a numeric keyboard switch is depressed, the binary lights beneath the illuminated
Active Digit indicator will display the newly entered contents of that digit position. At the
same time, the Active Digit indicator for that group goes off and the one for the next lower
numbered octal digit is illuminated. When data is to be entered into the B l
,
B2, B3, or P regis-
ters, the Active Digit indicator automatically starts at the fifth digit position of
the Communication register. .
Depressing the TRANSFER switch causes the data to be transferred from the Communi-
cation register to the designated register. Depressing the TRANSFER switch again
results in transferring all zeros to the register.
E Register
The E register is displayed as either EU and EL or ED. Whenever the E register is being
displayed, the A and Q registers cannot be displayed and vice versa. The register(s) cur-
rently displayed is denoted by the illumination of one of the three register display indica-
tors located above each of the two arithmetic register displays.
Figure 5-2 illustrates specific digit functions when the EU EL register is displayed on the
Integrated Console. Figure 5-3 illustrates the digit functions when the ED register is
displayed.
NOTE
The ED register may be entered directly with any of the 10 numeric keyboard characters. As
each digit is entered, the preceding digit is shifted one digit position left, increasing its
significance. Each succeeding entry shifts the digits one position left and-inserts the newly
entered digit into the lowest order position. After a maximum of 13 digits have been entered
(including the overflow digit) the uppermost characters are shifted end-off as additional
characters are entered. The EU EL register cannot be entered into by a keyboard operation.
Appropriate inter-register transfer instructions must be utilized for entry into this register.
Refer to the BCD section of Appendix B for an illustration of the ED register as displayed on
the optional 3200 console.
5-1 Rev. B