User`s manual

Initialization Structure (depreciated version)

SBCSCSI/D1 B-21

Initialization Structure (depreciated version)

The INITPARS structure is archaic. It is defined here in order to support

compatibility with existing code. Please switch to using its replacement, the

INIT_TYPE_1 structure.

typedef struct {

UINT scsi_addr; /* SCSI address of the SIOP */ 0x00

UINT intr_lev; /* Level at which SIOP interrupt will occur */ 0x04

UINT clk_speed; /* ASCII representation of MPU clock (x10KHz) */ 0x08

UINT snoopmode; /* Snoop mode of processor */ 0x0c

RELC *reloctbl; /* Pointer to scripts relocation table */ 0x10

UINT *script_ptr; /* Pointer to script pointer array */ 0x14

} INIT_TYPE_0, INITPARS;

SCSI Address

The user initializes this field with the SCSI address that the MVME167 or

MVME187 SCSI port (SIOP) is to occupy. For example, if the user wants the

SIOP to occupy address 4 then 0x00000004 would be placed in this field.

In the case of this structure, the signature is defined as 0. This definition,

combined with the assumption that existing source and binaries followed

recommended practice when initializing the scsi_addr parameter, allows the

initialization code to know what it is looking at without breaking existing

applications.

Interrupt Level

Same definition as in the INIT_TYPE_1 structure.

Clock Speed

The user initializes this field to an ASCII value which is equal to the clock

speed of the MPU as expressed as a multiple of 10KHz. For example, if the

clock speed of the MPU was 25MHz then this field should be initialized to

'2500' (0x32353030).

Snoop Mode

Same definition as in the INIT_TYPE_1 structure.

Pointer to Relocation Table

Same definition as in the INIT_TYPE_1 structure.