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APPENDIX.DOC
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1984-04-05
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L008
X!APPENDICIES"Y
!PRINTER SWITCH SETTINGS" ----------------------------------- A.1
!H TEST" ---------------------------------------------------- B.1
!CONTROL SEQUENCES" (a list) -------------------------------- C.1
General Printer Control ------------------------------ C.1
Horizontal Movement ---------------------------------- C.2
Vertical Movement ------------------------------------ C.5
Manipulation of Printable Characters ----------------- C.8
Bit-Graphics ---------------------------------------- C.10
!ASCII CHARACTER CODES" (a list) ---------------------------- D.1
!NUMBERING SYSTEMS" ----------------------------------------- E.1
APX
X!APPENDIX A"Y
!PRINTER SWITCH SETTINGS"
When you remove the carrier cover from your NEC 8023A, you will
be able to see two(2) DIP switches. They are covered by a
clear plastic strip which says !SW-1" and !SW-2". Their position
is to the right front of the printer. Each of the switches has
eight(8) small levers which are used to determine several of
the printer's power-on parameters.
To use the enclosed software, you need to make sure that the
levers match the settings given in the following chart. The
meaning for each setting is given in the remainder of this
appendix.
!SW - 1" 8 - 7 - 6 - 5 - 4 - 3 - 2 - 1
----------------------------------------------------------
| CLOSED | | X | | | | | X | |
----------------------------------------------------------
| OPEN | X | | R | X | R | X | | X |
----------------------------------------------------------
!SW - 2" 8 - 7 - 6 - 5 - 4 - 3 - 2 - 1
----------------------------------------------------------
| CLOSED | | R | | | NOT | | R |
----------------------------------------------------------
| OPEN | R | | R | R | USED | X | |
----------------------------------------------------------
!X = required R = recomended"
A.1
X!APPENDIX A"Y
!PRINTER SWITCH SETTINGS"
X!DIP SWITCH 1 (SW - 1)"Y
!LEVERS 1, 2, and 3 - Character Set Selection"
These three(3) levers are used to select the character set for
your language. We'll be using English.
LEVER NUMBER | 3 - 2 - 1
------------------------------------------
| JAPAN | O | O | O |
------------------------------------------
!*" | !UNITED STATES" | !O" | !C" | !O" |
------------------------------------------
| UNITED KINGDOM | O | C | C |
------------------------------------------
| GERMAN | C | O | O |
------------------------------------------
| SWEDISH | C | O | C |
------------------------------------------
!O" = Open - !C" = Closed
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
!LEVER 4 - Length of Page"
With this lever, you choose the power-on setting for the page
length. You have two(2) choices.
CLOSED = 72 lines
!* OPEN" = 66 lines
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
!LEVER 5 - Default SELect Signal"
This lever determines whether or not the NEC 8023A will pay
attention to a software signal from the computer to take the
printer on- or off-line.
CLOSED = ineffective (no)
!* OPEN" = effective (yes)
A.2
(continued) X!APPENDIX A"Y
!PRINTER SWITCH SETTINGS" (continued)
X!DIP SWITCH 1 (SW - 1)"Y
(continued)
!LEVER 6 - LF with a Full Buffer"
If you wish to have the NEC 8023A automatically print when its
RAM memory gets full, then you should have this lever in the
closed position. (Some software will require this setting, but
generally you do not want the NEC 8023A to print unless the
computer sends it a print signal.
CLOSED = effective (yes)
!* OPEN" = ineffective (no)
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
!LEVER 7 - Print Command Code"
This lever allows several commands other than the CR to cause
the printer to perform a carriage return. If you expect your
IBM PC to operate correctly with the NEC 8023A, this lever MUST
be set to closed.
!* CLOSED" = Carriage Return with CR, LF, VT, FF
OPEN = Carriage Return with CR only
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
!LEVER 8 - Line Feed following CR"
You are able to select a LF automatically with each CR by
having this lever closed. But, with an IBM PC, you MUST have
this lever open for proper opperation.
CLOSED = Line Feed with each CR
!* OPEN" = CR only (no LF)
A.3
(continued) X!APPENDIX A"Y
!PRINTER SWITCH SETTINGS" (continued)
X!DIP SWITCH 2 (SW - 2)"Y
!LEVER 1 - ZERO (0) Print Format"
This lever gives you the option of having all zeroes(0) printed
with or without a slash. The slash is highly recommended since
many programming mistakes are caused by confusing the zero and
letter O.
!* CLOSED" = Zero with a Slash
OPEN = Zero without a Slash
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
!LEVER 2 - Memory Buffer Size"
Normally you have 1K of RAM memory available in the NEC 8023A,
(unless you have added the 2K memory option). It is possible
that for certain applications, you may want to disable this
memory so that the printer will only be able to hold one line
of data at a time. That's what this lever is for.
!* CLOSED" = One Line of Data only
OPEN = 1K or 3K of RAM memory available
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
!LEVER 3 and 4 - NOT USED at present"
~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~ ~
!LEVER 5 - Character Pitch"
You have two(2) power-on options PICA or PROPORTIONAL. The
recommended setting is for PICA with Character Pitch changes
made by software means.
CLOSED = PROPORTIONAL Character Pitch
!* OPEN" = PICA Character Pitch
A.4
(continued) X!APPENDIX A"Y
!PRINTER SWITCH SETTINGS" (continued)
X!DIP SWITCH 2 (SW - 2)"Y
(continued)
!LEVER 6 - Seven- or Eight-bit Data"
By setting this lever to Open, you can make use of the char-
acter sets contained in the ROM memory of your NEC 8023A. But,
only if PRINT_CHARACTERS is not installed in your computer's
memory. The setting of this lever makes no difference to the
operation of either PRINT_CHARACTERS or PRINT_SCREEN.
!* CLOSED" = 7-bit Data