Two Chip 16MB SIMMs that work in an SE/30 or IIcx

[Phipli]

Can people please share the part numbers of the RAM chips on 16MB SIMMs that...

a) Only have two chips on the SIMM
b) Work in an SE/30 or IIcx

Some chips work, others don't. I've been bitten in the past and it is an expensive mistake!

 

[mg.man]

Were there / are there 2 chip vintage Mac compatible 16Mb SIMMs? I know there is this issue with 4Mb SIMMs - @max1zzz has made up some 2 chip, 4Mb ones of late, so will know what's needed for those. Maybe he'll know the incantation for 16Mb ones?

 

[Phipli]

Were there / are there 2 chip vintage Mac compatible 16Mb SIMMs? I know there is this issue with 4Mb SIMMs - @max1zzz has made up some 2 chip, 4Mb ones of late, so will know what's needed for those. Maybe he'll know the incantation for 16Mb ones?

There are yes just... It's hard to work out. Known good is easier than hours with the datasheet.

 

[max1zzz]

I'll have ti look at my SIMMS later to find the exact part number, what I can remember is the chips are next to impossible to find. I ended up getting some 64 & 128MB 2 pin simms form another member to pinch the chips from.
I keep meaning to do a 16MB simm design with 16Mx1 chips which are easier to find

 

[Phipli]

I'll have ti look at my SIMMS later to find the exact part number, what I can remember is the chips are next to impossible to find. I ended up getting some 64 & 128MB 2 pin simms form another member to pinch the chips from.

That's frustrating.

I keep meaning to do a 16MB simm design with 16Mx1 chips which are easier to find

Now that... Is interesting.