Macintosh Portable Slot Hackage — #14

Post #14 by Trash80toHP_Mini

Source Forum	68kMLA
Category	68k
Post Date	Fri, 21 Jun 2013 - 18:57
Original URL	https://68kmla.org/bb/threads/macintosh-portable-slot-hackage.28307/

Post

One of the pinout places has a blurb about the Portable's PDS as being about the same thing as the LC's 68020 PDS.

If you are determined to design an expansion card for the Macintosh Portable Direct Slot and can live with within the aforementioned design limitations . . .

< gobbledegook about no power being budgeted for the slot's DC voltage and ground provisions >

. . . you can contact Apple Macintosh Develo . . .

Remember, an expansion card designed for the Macintosh SE will not physically fit in the Macintosh Portable and vice versa.

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Electrical description of the Macintosh Portable expansion connector

The Macintosh Portable expansion connector provides the same microprocessor signals as the Macintosh SE, but the pinout of the expansion connector is different

Gotta look up the function of the active ICs on the two versions of the accelerator yet, but it doesn't look like I'll be borking anything if I manage to get the pin conversion card design done right.

Chippies say GAL16V8B with a Lattice(?) logo. also say 15LJ