src/mess/drivers/sgi_ip2.c
| r6491 | r6492 | |
|---|
| 345 | 345 | ***************************************************************************/ |
| 346 | 346 | |
| 347 | 347 | static UINT32 *mainram; |
| 348 | static UINT32 *bss; |
| 348 | 349 | |
| 349 | 350 | static ADDRESS_MAP_START(sgi_ip2_map, ADDRESS_SPACE_PROGRAM, 32) |
| 350 | | AM_RANGE(0x00000000, 0x000fffff) AM_RAM AM_BASE(&mainram) |
| 351 | AM_RANGE(0x00000000, 0x00ffffff) AM_RAM AM_BASE(&mainram) |
| 352 | AM_RANGE(0x02100000, 0x0210ffff) AM_RAM AM_BASE(&bss) // ??? I don't understand the need for this... |
| 351 | 353 | AM_RANGE(0x30000000, 0x30017fff) AM_ROM AM_REGION("user1", 0) |
| 352 | 354 | AM_RANGE(0x30800000, 0x30800003) AM_READWRITE8(sgi_ip2_m_but_r, sgi_ip2_m_but_w, 0xffffffff) |
| 353 | 355 | AM_RANGE(0x31000000, 0x31000003) AM_READWRITE16(sgi_ip2_m_quad_r, sgi_ip2_m_quad_w, 0xffffffff) |