Editing SSBUS controller

== Overview ==
Also known as "HDD controller" in earlier revisions. 

== Revisions == 
"HDD Controller":
* 1.2: CXD9546R (in DTL-T10000)
* 2.0: CXD9566R (on all retail PCMCIA-motherboards: GH-001, GH-003, GH-008)
* 3.0: CXD9611R (GH-004, GH-005, GH-006, GH-007, GH-010, GH-012, GH-013, GH-014)
* 3.1: CXD9611AR (GH-006, GH-007, GH-010, GH-012, GH-013, GH-014)

"SSBUS Controller":
* 3.1: CXD9611BR (GH-015(12-22), GH-015(31-41), GH-017, GH-022, GH-023, XPD-001, XPD-005)
* 3.1: CXD9686AR
* 3.1: CXD9686BR (GH-015(31-41))
* CXD9686R (GH-017, GH-019)
* 3.2: CXD2955R (GH-026, GH-027, GH-029, GH-032, GH-035)

Starting with GH-026, the SSBUS controller and the [[SPU2]] were combined into a single chip (CXD2955R), until the SSBUS controller ultimately became obsolete with the introduction of the L-chassis (SCPH-75XXX). From a software viewpoint, these newer consoles report a v3.1 SSBUS controller.