17 Feb
2019
17 Feb
'19
11:26 a.m.
it depends on the version of 68701
P3 has no protection P5 does
a P3 can be read with a Data I/O Unisite
http://matthieu.benoit.free.fr/pdf/MC68705P5_Bootstrap_ROM_Listing.pdf
The P5 is more involved. You put it into factory test mode, feed it a NOP instruction
and it will output the rom data on the I/O pins.
A variation of that will work on other parts in the series.
On 2/17/19 7:57 AM, Kyle Owen via cctalk wrote:
Has anyone been successful in dumping the EPROM
contents from an MC68701?
As I understand it, this MCU requires executing a particular program from
external memory to access the internal EPROM, both for programming and
reading.