User`s manual

10-6
Mini-Disks - (DISK BASIC)
The TRS-80 Mini Disk System is a small version of a floppy disk. The disk
allows vast file storage space and much quicker access time than you get with
tape storage. Drive 0 will contain about 58,880 bytes of free space for files.
Each additional disk will have 83,060 bytes of file space. The disk system has
its own set of commands, which allow manipulations of files and expanded
abilities in file use. The TRS-80 Mini Disk System allows both sequential and
random access. The disks will also allow use of several additional BASIC
commands and functions, including:
Commands:
CLOSE LSET PUT
FIELD NAME RSET
GET OPEN MERGE
KILL PRINT LOAD
SAVE
I/O Functions
CVD LOF
CVI MKD$
CVS MKI$
EOF MKS$
Additions to LEVEL II
Ten
USR
calls – USR0 through
USR9
INSTR
(performs function of
INSTRING subroutine
– see Chapter 4)
&H
(hex constants)
&O
(octal constants)
TIME$
(Date and 24-Hr.
Real-Time Clock.)
DEFUSR
LINE INPUT
DEF FN
(User Defined Functions)
MID$
(on left side of equation)
For explanation of these commands functions, see the TRS-80 Disk Operating
System Manual.