Chapter 4 Emulations And Escape Codes; Emulations; Numericalrepresentation - Star Micronics FR-10 User Manual

chapter 4
EMULATIONS
AND ESCAPECODES
EMULATIONS
The printer has two emulation modes: standard mode and IBM mode.
In standard mode, the printer emulates the fhnctions of the Epson EX-800
and EX-lOOOpnnters. Additional command codes are included as a supset
of these emulations.
In IBM
mode, the printer emulates the IBM Proprinter II. Additional
command codes are included as a superset of these emulations.
The emulationis changedby meansof DIP switch1.When ON,the printer
willbe in standardmode,andwhenOFF,the printerwillbe in IBMemula-
tionmode(seeChpter5). It is notpossibleto changetheemulationmodeby
meansof softwarecontrolor the frontpanelcontrols.
NOTE
Rememberto turnoff theprinterbeforemakinganyDIPswitchchanges.
NUMERICALREPRESENTATION
When
in either standard or IBM mode, any numerical parametem taken by
command sequences are usually binary
ratherthanASCIInumericalvalues.
In @ismanual,anyASCIIvalueswillbe representedin quotes,eg "21"will
represent the ASCII string 32h concatenated with 31h (in BASIC,
CHR$(50)+CHR$(51 ) ). Usuallyin theseexamples,however,hexadecimal
valueswillbe quoted,as shownby thelowercase"h"followingthenumber,
eg 32h.
Binary numbersover FFh are obtainedby dividingthe number into two
bytes,thefirstbeingthelowbyte,andthesecondbeingthehighbyte.Inthis
way, the value 123hwill be dividedinto the two followingbytes:23h and
Olh.
If negative numbers are required, they are obtained by subtracting the
absolutevalueof the negativenumberfrom 65536(10000h),and dividing
theresultintohighandlowbytes.Forinstance,to representthenumber-l Oh,
the followingoperationis carriedout:
23