28 Jun
2005
28 Jun
'05
6:53 a.m.
On Mon, 2005-06-27 at 23:16 +0100, Tony Duell wrote:
Aha no I hadn't - and you were spot on! :) I didn't realise that TI's
2716 was a three rail device and their 2516 was equivalent to everyone
else's 2716. You learn something new every day and all that :-)
The CPU board ROMs in both this 380Z and my own one are TMS2716's as it
happens (yet the 80 col board character ROM in the one machine uses a
TMS2516)
I wonder if I can modify my programmer to at least read three-rail
devices (it'd be handy to be able to read 2708's on it anyway). Maybe
via a little carrier that supplied the other two rails to the chip. I'll
have to grab the relevant datasheets...
cheers
Jules
Does anyone happen to have ROM dumps of from the RML 380Z CPU board?
I cna;'t help you, alas. IIRC, some RMLs used the TI 3-rail 2716s that
most programmers can't handle. I assume you've checked for this...