29 Feb
2008
29 Feb
'08
3:40 p.m.
On 28 Feb 2008 at 19:51, Tony Duell wrote:
Not really. In the case of the Integral, the 512K oartd has 16 RAM chips
and 16 empty spaces. I had to add the extra RAMs, but not remove
anything.
I would have thought the 5150 upgrade involved removing the existing RAMs
nad rpelacing them with larger-capacity chips, more like what I did to
my HP9816.
-tony
Anyway, the RAM board was clearly identical to
the 1M board, just with
only have the RAM chips fitted and the links set differently. Having got
a lot of 41256 chips on old PC memory boards, I spent the afternoon
upgrading it to 1M.
Sounds very similar to what was often done to the first-round 5150s
to get the planar memory increased from 64K to 256K.