i have changed the jumpers for 2732's to run on a original mpu (2518-35)already
i burned u2 without a problem but u6 is giving me problems.
tried several blank chips and same thing.
is there a special way to burn this chip??

There were a couple sites online where it said the rom was already converted to 2732
http://arcarc.xmission.com/Pinball/Roms/Pinball/Bally/

I'm getting a buffer error from the file
720-3532.u6 on that site.

Using a gq- 4x4 programmer
Here is the error
Write failed address=0x00087d
Buffer=0xfe device=0xff
This is what is says when trying to write it

I have tried 4 different 2732's
How do you double it?

Its seems to fail at the same point
These chips are erased and blank before starting. I'll giving that a shot with that type command and report back later.
Thanks for the help this far

How do you do this
Or just use the gq- 4x4 programmer software to load the "720-35_6.716" file at buffer address 0x000, and also at buffer address 0x800
Fairly new on this

I am matching the brand with the correct software. Just not familiar with this rom burner with doubling. Same with using dos
I haven't used it in many years. I couldn't get it to work in dos either. Any chance I could get someone to send me the file doubled?

I tried these chips multiple times without erasing too. Chip says nec d2732
I have tried burning with just USB and with an adapter same issue. Maybe try a different batch of chips?