ok so here is what i have
- desoldered the 1meg onboard - 8 chips
- soldered the 4megs of ram, - 8 chips
[attachment=0]Screen Shot 2013-12-31 at 9.40.24 AM.png[/attachment]
- Poped the board back in the classic w/o RAM card installed
! AND she boots!
[attachment=1]Screen Shot 2013-12-31 at 9.27.33 AM.png[/attachment]
Nice!
However only 2 megs of ram show up.
out of the 4.
So ok, i pop the 3 meg ram card back in…
Flip the classic on…
And she boots!
now it says there is 4 megs of ram installed.
ok…
( must be ignoring the one meg soldered on the ram card )
so for giggles i remove the 2 one meg simms.
and change the jumper to simms not installed.
to force it to use the one meg onboard.
and no dice it will not boot.
so here is what i am thinking.
The VLSI POS gives me 2 banks… A and B… but will only allow a maximum of 2 megs per bank.
lol so what do i do… leave the 4megs on there… and just pull the ram card… and sell the ram card to someone in need and maybe just
stick with 2 megs of ram… or… solder the one meg back on and just stick with the ram card, and 4 megs of ram.
well considering the macintosh classic is slow as molasses on a cold winter day… i might just keep that 4 in there…
for a total of 2 meg's and free up this 3mb ram card for a sale…
not ideal but should work… never know what you are going to get with these sob's until you start swapping chips…
next, soon will be classic II experimentation. hoping to bump up the onboard ram to 8megs… i wonder what mysteries that memory controller will show me.