Dataman S4 - Manual (Page 6)

DATAMAN S4 MANUAL
6 Introduction to S4
S4's microprocessor and RAM have power on
all the time. When S4 is switched on, it
awakens from a SLEEP MODE and starts
operation at the address pointed to by the
Warm Start Vector (WSV). Loading and
running a library reloads the WSV so that S4
starts operation in the right place. Pressing
RESET points the WSV back into the BIOS but
it first looks at the TPA . If the program thinks it
sees a valid library, it will ask you whether you
want to run it:
ESCape will do a COLD START into the BIOS.
ENTER will run the library.
If you want to reload your LIBRARY ROM,
place it in the ZIF socket and press LIB.
The LIB key loads a program into the Transient
Program Area from 8000 to FFFF, from a ROM
in the ZIF socket. The LIBRARY ROM must be
recognized by the system as a valid library. A
ROM which does not contain a LIBRARY will
not load. The BIOS configures S4 to handle a
27256, so the LIBRARY ROM must be a
27256.
Automatic Power-down
If there is no charger connected, S4 goes to
sleep if there is no input for 30 minutes. It turns
the display off and enters a powered-down
mode. For the last 30 seconds it makes