Texas Instruments TI-83-Plus User Manual

74 Chapter 2: TI-83 Plus Specific Information
TI-83 Plus Developer Guide Third Release May 28, 2002
 Use 5x7 large font:
The default is to use the small variable width font. Set the below flag to use
the large 5x7 font.
fracDrawLFont, (IY + fontFlags); default = 0
 Erase the line below the character being displayed:
This applies to the small variable width font only. Do not set this flag if the
row of pixels below the character being displayed is off of the display.
textEraseBelow, (IY + textFlags); default = 0.
 Display an application defined custom character:
This option is only used with the UserPutMap routine.
customFont, (IY + fontFlags)
 All of these settings remain until you change them. Applications need to
manage their state, if they are changed.
– Entry Points
VPutMap
Displays either a small variable width or large 5x7 character
at the current pen location and updates penCol.
VPutS
Displays a zero (0) terminated string, using either small or
large characters and updates penCol.
VPutSN
Displays a string whose length is the first byte using either
small or large characters and updates penCol.
VPutBlank
Displays a space character at the current pen location using
the small or large font and updates penCol.
DispOP1A
Rounds a floating-point number to the current fix setting and
display it at the current pen location. Uses either the small or
large characters and updates penCol.
SStringLength
Returns the width in pixels of a string using the small font.
SFont_Len
Returns the width in pixels of a character using the small
font.
UserPutMap
Displays a character defined by an application at the current
pen location and updates penCol.
Note: The VPutS and VPutSN routines can be used without first copying strings to RAM by
coding a local version of the routines in the application. See the System Routine
Documentation for the source code to these routines.
Note: The space character for the small font is only one pixel wide. Applications may want to
use two space characters to separate words, in strings to be displayed using the small
font.

Texas Instruments TI-83-Plus Specifications

General

Display Type	LCD
Display Resolution	96 x 64 pixels
Power Source	4 AAA batteries
Programming Language	TI-BASIC, Z80 Assembly
Backup Power	CR1616 or CR1620 lithium battery
RAM	24 KB
Processor	Zilog Z80
Weight	7.4 oz (210 g) with batteries
Dimensions	7.3 x 3.5 x 0.9 inches