===== 03 IOB IO BITWIDTH | BIOS 19951204 System ROM Version 3.0 11/18/96 A

cpu/io-access-bitwidth
Test how writes with different bitwidths behaves for different io devices
Note: Disable "Exception Handling Surveillance" in Caetla first"

Reading as 32bit, writing as:
SEGMENT    (   ADDRESS)   8bit          16bit         32bit         
RAM        (0x80080000)         0x78        0x5678    0x12345678    
BIOS       (0xbfc00000)   0x3c080013    0x3c080013    0x3c080013    
SCRATCHPAD (0x1f800000)         0x78        0x5678    0x12345678    
EXPANSION2 (0x1f802000)   0xffffffff    0xffffffff    0xffffffff    
EXPANSION3 (0x1fa00000)   0xffffffff    0xffffffff    0xfffffff7    
DMA0_ADDR  (0x1f801080)     0x345678      0x345678      0x345678    
DMAC_CTRL  (0x1f8010f0)   0x12345678    0x12345678    0x12345678    
DMAC_INTR  (0x1f8010f4)     0x340038      0x340038      0x340038    
JOY_MODE   (0x1f801048)         0x38          0x38          0x38    
JOY_CTRL   (0x1f80104a)            0             0    --CRASH--     
SIO_MODE   (0x1f801058)         0x78          0x78          0x78    
SIO_CTRL   (0x1f80105a)   0xc0c00000    0xc0c00000    --CRASH--     
I_MASK     (0x1f801074)    0xc000678     0xc000678    0x1f800678    
T0_TARGET  (0x1f801108)   0x1f805678     0xc005678    0x1f805678    
CDROM_STAT (0x1f801800)   0x18181818    0x1a1a1a1a    0x1a1a1a1a    
GPUSTAT    (0x1f801814)   0x14802000    0x14802000    0x14802000    
MDECSTAT   (0x1f801824)   0x80040000    0x80040000    0x80040000    
SPUCNT     (0x1f801daa)       0x5678        0x5678    --CRASH--     

Reading as 16bit, writing as:
SEGMENT    (   ADDRESS)   8bit          16bit         
RAM        (0x80080000)         0x78        0x5678    
BIOS       (0xbfc00000)         0x13          0x13    
SCRATCHPAD (0x1f800000)         0x78        0x5678    
EXPANSION2 (0x1f802000)       0xffff        0xffff    
EXPANSION3 (0x1fa00000)       0xffff        0xffff    
DMA0_ADDR  (0x1f801080)       0x5678        0x5678    
DMAC_CTRL  (0x1f8010f0)       0x5678        0x5678    
DMAC_INTR  (0x1f8010f4)         0x38          0x38    
JOY_MODE   (0x1f801048)         0x38          0x38    
JOY_CTRL   (0x1f80104a)            0             0    
SIO_MODE   (0x1f801058)         0x78          0x78    
SIO_CTRL   (0x1f80105a)            0             0    
I_MASK     (0x1f801074)        0x678         0x678    
T0_TARGET  (0x1f801108)       0x5678        0x5678    
CDROM_STAT (0x1f801800)       0x1818        0x1a1a    
GPUSTAT    (0x1f801814)       0x2000        0x2000    
MDECSTAT   (0x1f801824)            0             0    
SPUCNT     (0x1f801daa)       0x5678        0x5678    

Reading as 8bit, writing as:
SEGMENT    (   ADDRESS)   8bit          
RAM        (0x80080000)         0x78    
BIOS       (0xbfc00000)         0x13    
SCRATCHPAD (0x1f800000)         0x78    
EXPANSION2 (0x1f802000)         0xff    
EXPANSION3 (0x1fa00000)         0xff    
DMA0_ADDR  (0x1f801080)         0x78    
DMAC_CTRL  (0x1f8010f0)         0x78    
DMAC_INTR  (0x1f8010f4)         0x38    
JOY_MODE   (0x1f801048)         0x38    
JOY_CTRL   (0x1f80104a)            0    
SIO_MODE   (0x1f801058)         0x78    
SIO_CTRL   (0x1f80105a)            0    
I_MASK     (0x1f801074)         0x78    
T0_TARGET  (0x1f801108)         0x78    
CDROM_STAT (0x1f801800)         0x18    
GPUSTAT    (0x1f801814)            0    
MDECSTAT   (0x1f801824)            0    
SPUCNT     (0x1f801daa)         0x78    
Done.