that means your EPROM not be written. as you need, please turn off the switch and change a new good EPROM and do again until you get a fully programmed
EPROM.
2)READ: To instal the EPROM into the TEXTOOL and type 2, the follows will come to the screen:
START ADDRESS ? $
Also please key in a start address of memory in hex
code. Where wish to reed in from EPROMs. and hit RETURN. After one second, Read function finished:
READ | (Show on the screen) |
1)WRITE
2)READ
3)COPY
4)COMPARE
5)BLANKCHECK
6)MONITOR
Now you may key in 4 or 6 to check what you READ from EPROMs according the next procedures we will explained later.
3)COPY: To key in “3” means you Want to burn a new copy EPROM from a old master ROM. You will see the follows from the screen:
SET EASTER ROM
Please do it carefully, and hit RETURN READ
SET BLANK ROM
Please take the master ROM away and put a blank EPROM in the textool, press RETURN:
BLANK ? (Y/N)
The next procedure is same as WRITE until you get a new copy EPROM.
4)COMPARE: To compare a block of memory and the master EPROM. Only to hit “4” for compare function, the following
come to the screen:
START ADDRESS ? $
Please key in start address of memory location in where you want to compare with the master EPROM