Parity vs non-parity

[jeff.brielmaier@psl-online.com (Jeff Brielmaier)]

We interrupt this conference's topic for this response....

p >BTW, does anyone know why 9 42256 chips make up a 256K bank in an
p >XT while only 8 42256 chips make up 256K in an Apple IIe?

Because the IBM PC uses the additional chip for a parity check against the 8
data bits.  (Some PC motherboards can support non-parity memory, but most
require parity memory.)

Apple (in all of their machine) only use non-parity type memory.

And now, back to your regularly scheduled conference topic.....

 * KingQWK 1.05 # [PK] * This DOS program says I have insignificant memory.