a. Turn on your mainframe’s EEPROM Write Protect Switch by placing it in the
upward position. An alternative method for enabling the EEPROM Write Pro-
tect function—especially useful when you don’t want to have to remove the
front bezel to access the switch—is to type a command of
BIT 999 = 1 [CR]
on the keyboard. Note that every keyboard-entered command must be termi-
nated by pressing the CARRIAGE RETURN (
Retrn) key, here designated by
“
[CR].”
The red Status Indicator labelled
E2P will light when the EEPROM Write Pro-
tect function has been enabled.
b. If your mainframe is a version of the
Model 10KN3, 10KN6, or 10KN8A, enter
from the keyboard a command of either
VDU = C, 50 [CR] or VDU = C, 60 [CR]
depending on whether your local line frequency is 50 or 60 Hz, respectively
(“C” stands for “COLOR MONITOR”).
If your mainframe is a version of the
Model 10KN7, enter either
VDU = M, 50 [CR] or VDU = M, 60 [CR]
again depending on your local line frequency (“M” stands for “MONO-
CHROME MONITOR”).
c. Call to display your mainframe’s PAGE DIRECTORY by entering a command of
DIR [CR]
The Page Directory shows which of the 100 potential video pages have
already been formatted and entered in nonvolatile EEPROM storage. It shows
the relative amount of video memory dedicated to each stored page, and
which pages (if any) are contained in the “memory extension” provided by an
optional Model 10VGM500.* It also shows, after the words “PAGE DIRECTO-
RY,” the “free” video memory available in both “standard” video memory and
optional “extended” memory (if present). Finally, at the bottom right corner of
the display is shown the total “free” memory at your disposal (both “standard”
and “extended”).
Your mainframe will most likely come with a number of
prestored video
pages, including one or more initial data-display pages and the initial “blank”
page (No. 100). Take note of any presently
unused page number, which can
be assigned to the practice page you are about to compose.
d. Call to display the mainframe’s prestored “blank” Page No. 100 by pressing
the
Page key and then typing 100, followed by CARRIAGE RETURN (Retrn).
This command, which has the general form of
PAG p [CR]
may be used to call any existing Page No. “p” to the CRT screen.
e. Now press the
Page key (only), followed by Retrn. This asks the mainframe
for the number of the page currently on display. The answer (
PAG = 100)
should appear in the display “billboard.”
f. Press
Retrn again, to remove PAG = 100 from the billboard and replace it with
your mainframe’s currently specified “logo.”
B - 10
CRT VIDEO SETUP
“O
NTHE
A
IR
” (B-S
IZED
)
*Pages in “standard” video memory are shown white on red (for monochrome, white on black),
and those in optional “extended” memory,
red on white (for monochrome, black on white).
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