Minipro TL866 help required

[reanimator]

The problem is trying to burn any Amiga ROM or even DiagROM



as you can see from the image attached it tries to program the ROM twice and also changes the address 0000 to something completely different.
I have used the 27c4096 option with id check off and set the programming parameters to the correct setting but it fails every time with this


I have tried 27c400's, 27c800's and also 27c160
I am using the adaptor with the switches to change banks when required etc

any help would be appreciated

 

[supaduper]

How long are you erasing the eproms for in the UV eraser? seems they are not blank before writing, lots of eproms out there are bad

 

[reanimator]

I have erased them for 20-30 mins and blank testing shows them blank.
I can write some junk code to back to these eproms but it fails on writing amiga roms
and I can read from any amiga rom.

 

[supaduper]

I have erased them for 20-30 mins and blank testing shows them blank.
I can write some junk code to back to these eproms but it fails on writing amiga roms
and I can read from any amiga rom.

some of mine need an hour which is bad and also even when they say they are blank I get the same error as you so just bad eproms

 

[reanimator]

ok thanks for the info
will give them a good hour erasing then try again or else buy some more eproms :/

 

[reanimator]

still no joy...
so ordered a few more eproms to try

 

[cemi]

Maybe this helps: https://youtu.be/tkH1kWZYS7k?t=977

 

[ptp170]

Weak power from your USB port/cable?

 

[8 Bit Dreams]

Chips are placed on bottom of adapter socket?
You can blank check Your chips before burning..

 

[reanimator]

that's it I give up...….bloody things wont program
I only wanted a dual boot (3.1 and diagROM) and a 2.05 burnt
if anyone can do this let me know i have some chips here