Editing Power Macintosh 9600 (section)

=== Logic board and processor cards ===
Apple's schematic for the first 9600 logic board, 820-0865-A, describes it as the production 9500 board with its power supply connectors changed.<ref name="sch">Apple Computer, ''SCHEM, PCB, MN LG BD, 9600'' (PCB 820-0865-A): sheet 1 revision notes (based on the production 9500; power supply connectors J39 and J36 changed); sheet 20 power connectors. Hosted as [[:File:Power Macintosh 9600 logic board schematic (820-0865-A).pdf]]; see [[Power Macintosh 9600 Logic Board Schematic]].</ref> The 200 and 233 MHz models have 512 KB of level-2 cache soldered to that board. The 300 and 350 MHz models use Apple's Inline Cache Processor Card, which carries 1 MB of cache run at 100 MHz by a controller chip called Brick, on a revised logic board; Apple warns that the new card will not work in an older 9600 (developer note for the 300 and 350 MHz models, p. 3).<ref name="dne">Apple Computer, ''Developer Note: Enhanced Power Macintosh 8600 and 9600 Computers'' (1997), printed pp. 2–3: Apple Inline Cache Processor Card with 1 MB of level-2 cache and the Brick controller; Mach 5 processor; cache bus 100 MHz, system bus 50 MHz; the control logic on the logic board was changed and the new card will not work in an older 8600 or 9600. Hosted as [[:File:Enhanced Power Macintosh 8600 and 9600 Computers Developer Note (1997).pdf]]; see [[Enhanced Power Macintosh 8600 and 9600 Computers Developer Note]].</ref><ref name="ss" /> Owners call the earlier board Tsunami and the later one Kansas, and warn against putting an Apple Mach 5 card in a Tsunami board.<ref name="mla41645">68k Macintosh Liberation Army forum, [https://68kmla.org/bb/threads/powermac-9600-logic-boards.41645/ "PowerMac 9600 Logic Boards"] (2022): the later Kansas board's processor slot takes 604ev (Mach V) cards and is electrically different; do not fit an Apple Mach V card to a Tsunami 9600 board; the Kansas board moves the cache to the processor card; some G3 and G4 upgrades use the Tsunami board's cache as L3; 8600 boards 820-0858-B (604e, cache slot, 1996) and 820-0931-A (604ev, no cache slot, 1997).</ref>

The 9600/200MP card carries two 604e processors. One runs the Mac OS and handles interrupts; the second runs multiprocessing tasks set up by the first (dev note p. 3).<ref name="dn76" />