Dataman S4 - Manual (Page 22)

DATAMAN S4 MANUAL
22 TEST KEY
TEST KEY
PRETEST (START)-(END)=(DEST)
See Glossary for the special ways of editing of
the parameter line.
PRETEST compares a PROM in the ZIF with
the contents of the USER-RAM between the
START and END addresses. The purpose is to
check whether EPROMS must be erased with
UV light prior to programming. Bits are erased
all high, and may only be programmed from
high to low. The first location which cannot be
programmed is reported. If a PROM contains
locations which are already programmed, but
the PROM will accept the new program, the
message WILL BURN is displayed If the
PROM is actually blank it contains all FF bytes
- then the message BLANK ROM is displayed.
S4 must be configured for the right type of
PROM. A warning message gives the PROM
type.
To start the PRETEST, press the ENTER key.