2 Feb
2008
2 Feb
'08
1:09 p.m.
While I was at it, I dumped the ROM from my machine
and put that online
too. It was a bit more hassle than it should have been. I have a cheapie
"Topwin 2004" eprom/pld/mpu programmer, and I've used it successfully a
number of times. The boot ROM from this machine, although having the same
pinout as a single voltage 2716 EPROM, is a masked ROM. The topwin
programmer refused to read it, so I broke out my BASIC Stamp protoboard
system and grabbed the ROM that way.
`
Newer programmers have the option of checking if the EPROM is correctly
inserted and check the ID of the chip. You can turn it off somewhere. So you
can work with older/different chips :o)
Greetings
Alexandre Souza