Editing Processor Direct Slot (section)

=== IIci cache slot (Motorola 68030) ===
The L2 [[Cache (computing)|cache]] slot of the [[Macintosh IIci]], introduced in [[1989]], was a [[32-bit]] version of a PDS which used a 120-pin Euro-DIN connector to support the [[Motorola 68030]] processor. This slot also appeared in the [[Macintosh IIvi|IIvi]], and [[Macintosh IIvx|IIvx]]. These allowed for 3rd party companies, such as [[DayStar Digital]], to develop processor upgrades that did not require the removal of the CPU.<ref name="lowendmac-iici" />
The IIci cache slot is different from the other PDS slot as it doesn't have provision for external connectors,<ref>DCDMF3, p. 529.</ref> and it does not include an interrupt request signal, thus limiting its use. Its pin configuration is also completely different from the one in most later MC68030-based non-LC Macintoshes.<ref>DCDMF3, p. 522.</ref>