DRVREADY
Published By | Date | Version | Knowledge Level | Keywords |
---|---|---|---|---|
Revelation Technologies | 23 APR 1982 | 2.1X | INTERMEDIATE | DRVREADY, FLOPPY, DRIVE |
The DRVREADY function, provided with Advanced Revelation 2.12, lets you determine whether a floppy disk drive is ready. Pass a 0 for drive A and a 1 for drive B. DRVREADY returns true (1) if the drive is ready, otherwise false (0). Drives C and higher are not supported.
Figure 1 shows how DRVREADY can be used in a program.
Note: On some single floppy drive systems DRVREADY will return true when testing (the non-existent) drive B.
Example: Figure 1
DECLARE FUNCTION DRVREADY DECLARE SUBROUTINE MSG DRV = 0 DONE = 0 LOOP DONE = DRVREADY(DRV) IF DONE ELSE MSG('Insert disk into drive %1%|and close door','','',CHAR(65DRV)) END UNTIL DONE REPEAT