Atari 800 User Manual

Atari BASIC Reference Guide 185
CONFIGURA TlON
XIO command , #ch an nel, a, b, device
The command value (as specified in Table 5-4) indicates the
operation to be performed. The channel specified must have
been
previously opened for input or output (with the exception
of XIO 3).
The
numeric expressions (a, b) are not always used by XIO,
however , they must always be present as parameters. The
applicable numeric expression values are given in Tables 5-4, 5-5,
5-6, and 5-7.
The final parameter,
device, specifies the device to be used for
the input / output operat ion.
Table 5-4.
XIO Command Summary
DOS or BASIC
Operation Command Counterpart
Numeric Exp1
Numeric Exp2
General I/O Operations :
Op en a channel
3
OPEN
See Table 5-1
0-8
Read a line
5
INPUT
0
0
Get a character 7
GET
0
0
Writ e a line
9 PRI NT
0
0
Put a character
11 PUT
0
0
Close cha nn el
12
ClOS E
0
0
Statu s of channel STATUS
0
0
Screen Graphics:
Draw a lin e
17
DRAWTO
0
0
FiJI an ar ea
18
No ne
0
0
Disk':
Rename a file
32
DOS Menu E
0
0
Dele te a file
33 DOS Menu 0
0
0
L ock a file
35 DOS M e nu F
0
0
Unl oc k a file
36 DOS Menu G
0
0
Move file po inte r 37 PO INT
0
0
Find file po int er
38 NO TE
0
0
Format di skette 254
DOS Menu I
0
0
' 00 5 must have be en boo ted.

Atari 800 Specifications

General

Processor	MOS Technology 6502
Processor Speed	1.79 MHz
ROM	10 KB
Graphics	ANTIC and GTIA chips
Release Year	1979
Display Resolution	up to 320 x 192
Colors	128 colors
Sound	4 channels
Storage	Cartridge, cassette, floppy disk
Ports	Cartridge, serial, monitor
Operating System	Atari OS