Fujitsu MB86291 Scarlet, Часто задаваемые вопросы

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Q19: back to top
Recommendation for using the Orchid with the memory configuration:
2 x SDRAM 128MBit (x32) 64 bit bus width
Example type : MT48LC4M32B2TG
The following both connections are OK :
Orchid MA12 --> SDRAM BA1
Orchid MA13 --> SDRAM BA0
or
Orchid MA12 --> SDRAM BA0
Orchid MA13 --> SDRAM BA1
CKE connects to High(VDD).
CS connects to Low(GND).
For more details, please check the attached schematics and specifications.
Q20: back to top
How can I switch on/off the LEDs on the PCI board for testing ?
LEDs are memory mapped in the IO space. But the current map driver(mapdrv.dll) can not
access the LED register which is mapped FPGA on the PCI board because this PCI map
driver can access only 64MB.
The LED register is mapped 0x04001000 area.
So if you want to access the LED register, please use the "old" map driver (uty_cremson.dll).
sample code :
unsigned long FrameAddr;
if (GDC_FALSE==GdcInitialize()) return FALSE;
GdcSetMemoryMode(0x009a984a); //FCRAM 64Bit
GdcExecMode(GDC_DISABLE);
FrameAddr = Get_FrameAddress();
*((unsigned long *)(Fr0x4001000)) = 0x55555555;