===== 14 RAM RAM SIZE | BIOS 19951204 System ROM Version 3.0 11/18/96 A
BadVaddr as the group starts: 00000480

RAM_SIZE read back:
RAM_SIZE 0B8F (bits 0-2): wrote 00000B8F, read 00000B8F, put back 00000B88, read 00000B88
RAM_SIZE 0BF8 (bits 4-6): wrote 00000BF8, read 00000BF8, put back 00000B88, read 00000B88
RAM_SIZE FB88 (bits 12-15): wrote 0000FB88, read 0000FB88, put back 00000B88, read 00000B88
RAM_SIZE FFFF0B88 (bits 16-31): wrote FFFF0B88, read FFFF0B88, put back 00000B88, read 00000B88
RAM_SIZE 0888: wrote 00000888, read 00000888, put back 00000B88, read 00000B88
Bit 7, "delay on simultaneous code and data fetch from RAM", and bit 8, by timing:
cached code, RAM lw, 0B88: 979
cached code, RAM lw, 0B08: 958
cached code, RAM lw, 0A88: 952
cached code, RAM lw, 0888: 949
uncached code, no load, 0B88: 1903
uncached code, no load, 0B08: 1895
uncached code, RAM lw, 0B88: 2918
uncached code, RAM lw, 0B08: 2700
uncached code, RAM lw, 0A88: 2923
uncached code, RAM lw, 0888: 2928
uncached code, RAM lw use, 0B88: 3733
uncached code, RAM lw use, 0B08: 3642
uncached code, RAM sw, 0B88: 3029
uncached code, RAM sw, 0B08: 2809
uncached code, BIOS lw, 0B88: 4725
uncached code, BIOS lw, 0B08: 4698
Mirrors by setting (the word at the first address holds C0FFnnnn):
RAM_SIZE 0B88, lw 0002F1D0: none, reg C0FF0B88
RAM_SIZE 0B88, lw 0022F1D0: none, reg C0FF0B88
RAM_SIZE 0B88, lw 0042F1D0: none, reg C0FF0B88
RAM_SIZE 0B88, lw 0062F1D0: none, reg C0FF0B88
RAM_SIZE 0B88, lw 0082F1D0: none, reg 00000001
RAM_SIZE 0B88, lw 00C2F1D0: exception 7, reg 5A5A5A5A
RAM_SIZE 0888, lw 0002F1D0: none, reg C0FF0888
RAM_SIZE 0888, lw 0022F1D0: none, reg 00000001
RAM_SIZE 0888, lw 0042F1D0: exception 7, reg 5A5A5A5A
RAM_SIZE 0888, lw 0062F1D0: none, reg 00000001
RAM_SIZE 0888, lw 0082F1D0: exception 7, reg 5A5A5A5A
RAM_SIZE 0888, lw 00C2F1D0: none, reg 00000001
RAM_SIZE 0C88, lw 0002F1D0: none, reg C0FF0C88
RAM_SIZE 0C88, lw 0022F1D0: none, reg FFFFFFFF
RAM_SIZE 0C88, lw 0042F1D0: exception 7, reg 5A5A5A5A
RAM_SIZE 0C88, lw 0062F1D0: exception 7, reg 5A5A5A5A
RAM_SIZE 0C88, lw 0082F1D0: exception 7, reg 5A5A5A5A
RAM_SIZE 0C88, lw 00C2F1D0: exception 7, reg 5A5A5A5A
RAM_SIZE 0F88, lw 0002F1D0: none, reg C0FF0F88
RAM_SIZE 0F88, lw 0022F1D0: none, reg C0FF0F88
RAM_SIZE 0F88, lw 0042F1D0: none, reg C0FF0F88
RAM_SIZE 0F88, lw 0062F1D0: none, reg C0FF0F88
RAM_SIZE 0F88, lw 0082F1D0: none, reg FFFFFFFF
RAM_SIZE 0F88, lw 00C2F1D0: none, reg FFFFFFFF
RAM_SIZE 0888, sw past 2MB: exception yes 7, word now 11111111
Done.