diff options
Diffstat (limited to 'src/mame/machine/naomigd.cpp')
-rw-r--r-- | src/mame/machine/naomigd.cpp | 12 |
1 files changed, 6 insertions, 6 deletions
diff --git a/src/mame/machine/naomigd.cpp b/src/mame/machine/naomigd.cpp index 329ff6211f2..d82eb9d0166 100644 --- a/src/mame/machine/naomigd.cpp +++ b/src/mame/machine/naomigd.cpp @@ -50,7 +50,7 @@ DIMM controller registers 20 5F7048 | 24 5F704C 16bit Interrupt register -------c ---b---a - a - IRQ to DIMM (SH4 IRL3): 0 set / 1 clear + a - IRQ to DIMM (SH4 IRL3): 0 set / 1 clear b - unk, mask of a ??? c - IRQ to NAOMI (HOLLY EXT 3): 0 set / 1 clear (write 0 from NAOMI seems ignored) @@ -60,18 +60,18 @@ DIMM controller registers c - unk, set to 1 in VxWorks, 0 in 1.02 d - unk, checked for == 1 in 1.02 -2A 8bit possible DES decryption area size 8 MSB bits (16MB units number) +2A 8bit possible DES decryption area size 8 MSB bits (16MB units number) VxWorks firmwares set this to ((DIMMsize >> 24) - 1), 1.02 set it to FF -2C 32bit SDRAM config -30 32bit DES key low -34 32bit DES key high +2C 32bit SDRAM config +30 32bit DES key low +34 32bit DES key high SH4 IO port A bits ------------------- 9 select input, 0 - main/lower board, 1 - option/upper board (IDE, Net, PIC) 0 1 -0 DIMM SPD clk JP? 0 - enable IDE +0 DIMM SPD clk JP? 0 - enable IDE 1 DIMM SPD data JP? 0 - enable Network 2 93C46 DI PIC16 D0 3 93C46 CS PIC16 D1 |