20 Oct
1998
20 Oct
'98
12:08 a.m.
> In rummage through the dark recesses of my garage
(too densly packed to let
> in light) I again ran across an IBM AT motherboard that used the piggyback
> memory chips. Were there any other computers that used these things?
The Apple /// 128K memory board used 32 pieces of
standard 16K DRAM, and
16 pieces of 32K (stacked 16K) DRAMs.
Several TI calculators including the TI-58 and TI-59
use stacked DIPs for
RAM.
The HP-41CX calculator uses stacked DIPs for ROM and
RAM.
The first Atari ST520+ and 260+ used stacked chips. Atari
decided short before delivering the first units that they
had to double the RAM size (Never woundered why the 260+
had 512K and the 520+ had 1Meg ? 260 -> 260 decimal kBytes
and 520 -> 520 decimal kBytes, both numers are rounded in
favour for the marketing .) Ther have also been real
260s and 520s with 256K and 512K.
Gruss
H.
--
Ich denke, also bin ich, also gut
HRK