| T O P I C R E V I E W |
| robertjhurst |
Posted - 04/12/2023 : 01:44:11
Hi all, I'm trying to read the contents of the above to make a backup file, but can't find it on the list of devices.
I'm using a GQ-4X programmer.
There is a datasheet for the device here: h**p://www.limpulsion.fr/upload/docs/DM52B33H300.PDF
Can anybody advise how I might proceed?
Many thanks. |
| 3 L A T E S T R E P L I E S (Newest First) |
| anniel |
Posted - 04/13/2023 : 04:46:33
quote:
Originally posted by robertjhurst
quote:
Originally posted by anniel
Start with the 27C64 and drop VPP to 5V.
Ok, thanks. I was trying to use a 27C64 as a drop in replacement as they are a lot more available. The machine wouldn't recognise it though so wanted to copy the prog across in case it needs a format.
What's the deal with Pin 1? Tied high on the 52B33, I've left it floating on the 27C64
Many thanks.
Pin 1 on the 52B33 if low should erase all the chip. |
| robertjhurst |
Posted - 04/12/2023 : 23:12:52
quote:
Originally posted by anniel
Start with the 27C64 and drop VPP to 5V.
Ok, thanks. I was trying to use a 27C64 as a drop in replacement as they are a lot more available. The machine wouldn't recognise it though so wanted to copy the prog across in case it needs a format.
What's the deal with Pin 1? Tied high on the 52B33, I've left it floating on the 27C64
Many thanks. |
| anniel |
Posted - 04/12/2023 : 06:11:41
quote:
Originally posted by robertjhurst
Hi all, I'm trying to read the contents of the above to make a backup file, but can't find it on the list of devices.
I'm using a GQ-4X programmer.
There is a datasheet for the device here: h**p://www.limpulsion.fr/upload/docs/DM52B33H300.PDF
Can anybody advise how I might proceed?
Many thanks.
Start with the 27C64 and drop VPP to 5V. |
