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Avago Technologies LSI53C1010 User Manual

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Running a SCRIPTS Program

7-15

Figure 7.9

General.ss SCRIPTS Source File (Cont.)

; After every data transfer add 8 to data_adr. This allows
; scatter/gather operations when the list of addresses to
; read or write is appended to the end of the buffer_table.

1

dataout:

MOVE FROM data_adr, WHEN DATA_OUT
MOVE MEMORY 4, out_offset, scratch_adr
CALL REL(addscratch)
MOVE MEMORY 4, scratch_adr, out_offset
JUMP REL(switch)

2

datain:

MOVE FROM data_adr, WHEN DATA_IN
MOVE MEMORY 4, in_offset, scratch_adr
CALL REL(addscratch)
MOVE MEMORY 4, scratch_adr, in_offset
JUMP REL(switch)

addscratch:

MOVE SCRATCHA0 + 8 to SCRATCHA0
MOVE SCRATCHA0 to SFBR
JUMP REL(ck_carry), IF 0x00
RETURN

ck_carry:

MOVE SCRATCHA1 + 1 to SCRATCHA1
RETURN

end:

MOVE FROM status_adr, WHEN STATUS
INT err5, WHEN NOT MSG_IN
MOVE FROM rcvmsg, WHEN MSG_IN
MOVE SCNTL2 & 0x7f to SCNTL2 ;expect disconnect
CLEAR ACK
WAIT DISCONNECT
INT ok

resel:

INT err6

select_adr:

INT err7

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