Blank Check P89C664

[KS Tan]

Hi,
I am trying to do a balnk check first before I program P89C664, anyone know what is the return variable from FM command to indicate whether the device is blank or not?

rdgs,

[Andy Ayre]

In Windows the blank blocks are indicated by being highlighted or not. On the command line it will say "Memory Blank" after execution.

[Jan Waclawek]

I think the OP wanted to get a DOS ERRORLEVEL value, which he could check in a bat file.

Jan Waclawek

[Andy Ayre]

FM.exe should return 1 for error and 0 for success, which I believe is used to set ERRORLEVEL.