Motorola MVME2300 Series manual Falcon-Controlled System Registers, VMEbus Slave Map Example

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Board Description and Memory Maps

The register values in the table yield the following VMEbus slave map:

Table 1-14. VMEbus Slave Map Example

VMEbus Address		Size	CHRP Map	PREP Map
Range	Mode
4000 0000 -	A32 U/S/P/D	4K	PCI/ISA I/O Space:	PCI/ISA I/O Space:
4000 0FFF	D08/16/32		0000 1000 - 0000 1FFF	0000 1000 - 0000 1FFF
1000 0000 -	A32 U/S/P/D		PCI/ISA Memory Space	PCI/ISA Memory Space
	D08/16/32/64	256M	(On-board DRAM)	(On-board DRAM)
1FFF FFFF
	RMW		0000 0000 - 0FFF FFFF	8000 0000 - 8FFF FFFF

Falcon-Controlled System Registers

The Falcon chip set latches the states of the DRAM data lines onto the PR_STAT1 and PR_STAT2 registers. MVME2300 series boards use these status registers to provide the system configuration information. In addition, the Falcon chip set performs the decode and control for an external register port. This function is utilized by MVME2300 series boards to provide the system control registers.

Table 1-15. System Register Summary

BIT # ---->	0	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20	21	22	23	24	25	26	27	28	29	30	31
FEF80400							System Configuration Register (Upper Falcon’s PR_STAT1)
FEF80404						Memory Configuration Register (Lower Falcon’s PR_STAT1)
FEF88000	System External Cache
		Control Register
FEF88300	CPU Control Register

The following subsections describe these system registers in detail.

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