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RAM DISK EMULATION 5.7
Using the ProDOS Filer, which is included on the Utility side of the MultiRam
disk, you may transfer the MULTIDRIVE.PRO program to any ProDOS formatted disk.
To run the program, simply type “MULTIDRIVE.PRO” after the disk the program is
on has booted and has displayed the Applesoft “]” prompt. If the program is on a
disk other than the one you originally booted, first type the disk s prefix
and then the program name. For example, “—/USERS.DISK/MULTIDRIVE.PRO” would
install the RAM disk if you had transferred the program to a copy of your ProDOS
Users Disk.
You may also have the RAM disk automatically installed upon bootup if you have
the MULTIDRIVE.PRO program and the BASIC.SYSTEM and PRODOS system files saved to
a ProDOS formatted disk. To automatically create a RAM disk upon bootup, save
this one line program under the name "STARTUP”:
10 PRINT CHR$(4)”BRUN MULTIDRIVE.PRO”
To install the RAM disk from within any Applesoft program, enter the preceding
line. Be certain the program is on the same disk as the Applesoft program using
this line; otherwise you must precede the program name with the volume name
where it can be found.
Using The RAM Disk
The RAM disk drive can be used like any other disk drive with ProDOS. You may
transfer programs into the RAM disk from other disks and from the RAM disk to
other disks; you may save programs to the RAM disk from memory; and you can load
programs from the RAM disk into memory. Unlike other disk drives, however, you
should end each session with the RAM disk by saving any files desired to a
standard floppy or hard disk as the RAM disk’s memory is lost when the Apple is
turned off.
Because the RAM disk can become quite large, you may wish to use subdirectories
with the RAM disk. ProDOS allows only 51 file entries in its volume directory.
With subdirectories, you may have 51 files stored per subdirectory.
The ProDOS RAM disk’s volume name is “/RAM” by default. Using the Filer volume
command “Rename”, the volume name can he changed to any legitimate ProDOS volume
name.
To clear the RAM disk of all files, you could format the disk using the Filer’s
“Format a Volume” command. If you have renamed the RAM disk, the RAM disk’s
volume name will be changed back to “/RAM” after using the Filer format command.