Tandy 1000 Basic Reference Manual

Chapter 10 I BASIC Keywords
IOCTL$ Advanced Function
IOCTL$([#lbuf,r)
Returns the control data string from a device driver that you
have opened previously.
Buffer is the number assigned to the driver when you opened it.
The number sign
(#) is optional. It is provided for compatibility
with other BASICs.
You can use the IOCTL$ function to confirm that
a IOCTL
statement succeeded (or failed). You can also use IOCTL$ to get
information from the device.
For more information on device drivers, see the
Programmer's
Reference manual for your computer. It is available at your Radio
Shack Computer Store.
Example
10 OPEN "\DEV\PRN" FIS 1
20 IF IOCTL$CI) = "NR" THEN PRINT "PRINTER NOT
REFIDY"
189

Tandy 1000 Specifications

General

Processor	Intel 8088
Processor Speed	4.77 MHz
RAM	128 KB (expandable to 640 KB)
Operating System	MS-DOS 2.11
Manufacturer	Tandy Corporation
Release Year	1984
Storage	Single or double 5.25" floppy disk drive (360 KB), optional hard drive
Sound	Tandy 3-voice sound
Ports	Parallel, Serial
Graphics	CGA (Color Graphics Adapter)
Graphics Modes	320x200, 640x200