Disk Basic - Epson TF-20 Reference Manual

9 Do not use an AC outlet which is being used for equipment (such as
large motors) that generates electrical noise
10 Use a commercial AC 100V power source If the voltage is too high or
too low, it can be a source of malfunction
11 When transporting the TF-20, always insert the transport protection
sheets in the drives to protect the read/write heads (In an emergency,
flexible disks can be used for this purpose, although there is a strong
risk that the disks will be damaged ) Always transport the disk drive in
the packing in which it came
Head protection sheets
Fig. 3 3 Transporting the Disk Drive
3-10

4. DISK BASIC

Disk BASIC is an expansion of the ROM BASIC which is normally used to
run the HX-20 The interpreter for this expansion is supplied as the system
program on the system disk
When the TF-20 is connected to the HX-20, starting up BASIC will cause
the expansion interpreter to be loaded from the disk into the RAM of the
HX-20 Then, until the HX-20 returns to the menu, the expansion
interpreter will function along with the interpreter already in the ROM to
effect the necessary processing for I/O to the disks and for the newly
added commands, statements and functions of Disk BASIC The proces-
sing of the previously existing functions continues to be handled by the
interpreter in the ROM
4-1