Commodore Computer 4023 Bedienungsanleitung PDF herunterladen (Seite 3)

Q&A Dodger hy W arren Swan

PRINTER:

Assumed: That you are using a Commodore 4023 or like

Commodore dot-matrix printer. Also, that the printer’s device

number is 4. If not, replace 4 with the appropriate device

number in the following. Also, I use the variables P and PF

to refer to two numbers, both from 1 to 255 and both different.

3.1 PUTTING THE PRINTER IN LOWER CASE /

UPPER CASE MODE

Assumed: that you first open a file to the printer with a

command such as

open P,4

To put the printer in lower / upper case mode only

temporarily, print a cursor down character prior to the section.

Printing a cursor up or beginning a new line will cause the

printer to leave lower / upper case mode. For example:

printtiP, "(cursor down)upper & lower (cursor up) upper

<fi graphics "

To place the printer in lower / upper case mode until

changed back or turned off, use these commands:

open PF,4,7; print#PF: close PF

Application packages such as Superscript assume the

printer to be in upper case / graphics mode. These packages

preface each line with a cursor down.

3.2 PUTTING THE PRINTER INTO UPPER CASE /

GRAPHICS MODE

To put the printer in uppercase / graphics mode temporarily,

print a cursor down prior to the section. A cursor down always

prints the following characters in the OPPOSITE MODE that

the printer was in. A cursor up or new line cancels this

temporary switch. See above for an example. When the printer

is first turned on it “wakes up" in this mode. To switch the

printer back to upper case / graphics mode, use these com

mands:

open PF,4,8: print ft PF: close PF

3.3 PAGINATION

Pagination causes the printer to skip 6 lines, 3 at the top and

3 at the bottom, of each page. To turn on pagination, print a

SHIFT CLR character to the printer. NOTE: This character

is not buffered by the printer. It is performed immediately.

Now move the top of the page to just past the little black rollers

on the page holder.To turn off pagination, just print a HOME

character to the printer. This character is also performed

immediately instead of being buffered. The current page will

eject and then the printer is no longer paginating.

3.4 EJECTING A PAGE

The way to eject to the top of the form is (believe it or not)

to print a HOME immediately followed by a SHIFT CLR to

the printer, as follows:

printtt4, "(home)(shift clr)"

________________________

Question & Answers byW arren D. Swan

Question: "How do you get the Superscript II '♦format 1 =

command, described in section 10.2.2 of the manual (page 131),

to work?"

Answer: The confusion here is caused by the word "format",

which Precision Software wanted to mean "put any optional

format commands here, separated by colons." To avoid confu

sion they should have simply left out the word "format". Their

example would then have looked like:

*1=204

The word "format" simply means that we could also have

used:

*lm 20:jul:2=95:l=204

for all that Superscript cares. Notice that you do not press

the ESCape key before typing the digit when using the *digit=

command (I mean *1 = ... or *2= ... for example). But, when

you go to insert these special characters into your text, you must

press ESCape and the corresponding digit to get the ASCII code

that you assigned to that digit in the *digit= command. When

you do this, the digit will be displayed reversed in your text.

As an example, we want to print the underscore character on

a Commodore 6400 printer. The underscore is ASCII code 95.

To print the underscore we would use the following text (reversed

characters are underlined here):

*1=95

This text will contain an underscore (1) between the paren

thesis when printed, and a reversed 1 when viewed in Super

script.

PAGING THE .4Q23 by Roy Sherman

Just a little follow-up on paging when using other than 6 lpi

(lines per inch), (the default mode)To set the spacing between

lines (bottom of one line to the bottom of the next) type:

open6,4,6: print#6,chr$(x): close 6

To determine the number for x in the chr$( ) divide 216 by

the lpi desired, ie, 216/9 = 24. Simply substutite 24 for the x

above [chr$(24)]. Nine lpi, by the way, will allow the printer

graphics to connect. Next we set the number of lines per page

with:

open 4,4:print#4,chr$(147) - turns on paging

open3,4,3:print#3,chr$(p):dose3 sets # of printed lines

print#4,chr$(147): close 4 enable paging again.

To determine the value of p, multiply the lpi by 11 (for 11 inch

paper) and subtract 6 for the three blank lines at the top and

bottom of the page that the printer is going to put in automat

ically. ie, 9 lpi X 11 inches = 99 lines per page - 6 = 93

PRINTED lines per page. Therefore p = 93.To eject a page

type:

open 4,4: print#4, chr$(19) chr$(147): close 4

_This will perform a "top of form" from within a program

the same as the paper advance button on the printer.

June 1993

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