System Call Routines
http://www.motorola.com/computer/literature 5-91
5
.SIOPEPS
Name
.SIOPEPS - Retrieve SCSI pointers
Code
$0090
Description
The purpose of this TRAP is to allow a user program to access the SCSI
I/O Processor package contained in the PPCBug ROMs. This TRAP
returns a list of pointers and table sizes that the user program uses to move
the SCSI I/O Processor package from ROM to RAM. The SIOP package
cannot be executed by a user program without being moved and edited. For
instructions on how to move and edit the SIOP package, refer to the
documentation for the SCSI I/O controller (refer to Appendix A, Related
Documentation).
Entry Conditions
None
Exit Conditions Different From Entry
R03: Pointer to the SIOP pointer and size table.
Description of SIOP Pointer and Size Table Packet
Format for packet containing SIOP pointers and table sizes. All entries are
4 bytes in length.
siop_init
Initialization routine entry
siop_cmd
Command entry point entry
siop_int
Interrupt handler entry
sdt_tinit
SIOP debug trace initialization entry
sdt_alloc
SIOP debug trace memory allocation entry
relocation
Pointer to the relocation table for NCR scripts
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