I believe this is accurate for identifying boards from revision numbers: https://github.com/AndrewFromMelbourne/raspberry_pi_revision
From the firmware, old style revision numbers:
case 0x02: case 0x03: boardrev = MAKE_BOARDREV(MODELB, 1_1); break; case 0x04: case 0x05: case 0x06: boardrev = MAKE_BOARDREV(MODELB, 1_2); break; case 0x07: case 0x08: case 0x09: boardrev = MAKE_BOARDREV(MODELA, 1_2); break; case 0x0d: case 0x0e: case 0x0f: boardrev = MAKE_BOARDREV(MODELB, 1_2); break; case 0x10: case 0x13: case 0x16: case 0x19: boardrev = MAKE_BOARDREV(MODELBPLUS, 1_2); break; case 0x11: case 0x14: case 0x17: case 0x1a: boardrev = MAKE_BOARDREV(CM, 1_0); break; case 0x12: case 0x15: case 0x18: case 0x1b: boardrev = MAKE_BOARDREV(MODELAPLUS, 1_1); break; default: boardrev = MAKE_BOARDREV(MODELB, 1_2); break; }
and new style (bits 4-11):
typedef enum { BOARD_TYPE_MODELA = 0, BOARD_TYPE_MODELB = 1, BOARD_TYPE_MODELAPLUS = 2, BOARD_TYPE_MODELBPLUS = 3, BOARD_TYPE_PI2MODELB = 4, BOARD_TYPE_ALPHA = 5, BOARD_TYPE_CM = 6, BOARD_TYPE_PI0 = 9, } BOARD_TYPE_T;