Dataman 48UXP - Manual (Page 46)

Fourth Select the error display format.
Important notice in function test
To perform function test after program the PLD chip, the input
file must contents the test vector or customer has to create the
vector by himself, in options of operation menu, function test is
enable as default, which means after program the PLD, the
Dataman-48UXP will perform function test automatically, if no
vector in the buffer, the Dataman-48UXP will report “no test
vector in buffer”, if test vector do not match the behavior of the
chip after vector test, error will report with vector no and
which pin expect low/high but received high/low. For PLD
with PLCC in package (GAL 20V8 as example), the
Dataman-48UXP software only supports 24 pin in DIP if you
need to program a 28 PLCC chip with PLCC adapter, the
Dataman-48UXP will program the chip but the function test
will be failure since the pin can not mismatch with the chip
(the chip is 28 pin but it emulated as a 24 pin chip with the
adapter), the vector data will not match the device data in pin
out.
Erasing a Device
Menu Device / Erase
Hot key Ctrl-F1
This function is a device-specific command; it appears on the main
menu only after electronically erasable chips have been selected.
The function can be used to erase a desired memory range from a
chip.
Compare
Menu Device/compare
Hot Key Ctrl-F3
This command only available for memory device, the compare