Avago Technologies LSI53C1010 - Manual (Page 197)

Relative Addressing 8-11
Figure 8.6 Table Definitions
8.7 Relative Addressing
In the relative addressing mode, the 24-bit signed value in the DSPS
register is the relative displacement from the current DMA SCRIPTS
Pointer (DSP) register. Using this mode, the 32-bit physical address is
formed at execution time, and there is no need to patch a SCRIPTS
instruction at run time. Relative addressing can be used for jumps or calls
and requires no initialization of jump and call addresses. This feature can
; Table definition and use in SCRIPTS
Table dsa_table \
SCSI_ID = ID{0x33, 0x00, 0x00, 0x00}
Data_buf = 512{??} , \
ID_msg = {0x80} , \
CMD_buf = {0x08, 0x00, 0x00, 0x00, 0x01, 0x00}
table_use:
SCRIPTS Code Output File Memory Definition
Entry table_use
SELECT ATN FROM SCI_ID, REL (resel)
MOVE FROM ID_msg, WHEN MSG_OUT
MOVE FROM CMD_buf, WHEN CMD
MOVE FROM Data_buf, WHEN DATA_IN
INT 0x0A
resel:
int 0x0B
ULONG SCRIPT [ ] = {
0x47000000
0x1E000000
0x1A000000
0x19000000
0x98080000
0x98080000
0x00000020
0x00000010
0x00000018
0x00000008
0x0000000A
0x0900000B
};
#define ENT_table_use
ULONG INSTRUCTIONS
ULONG PATCHES 0x00000000
= 0x00000006;
= 0x00000000;
Cmd (0x47) Table Offset (0x00)
Alternate Jump Address (0x20)
Cmd (0x1E) Not Used
Table Offset (0x10)
Cmd (0x1A) Not Used
Table Offset (0x18)
Cmd (0x19) Not Used
Table Offset (0x08)