User`s manual

.DSKCTRL
5-31
5
Entry Conditions
R03: 32-bit address of command packet
Exit Conditions Different From Entry
Status half-word of command packet is updated. Additional side
effects depend on the packet sent to the controller.
R03: Bit 3 (ne) = 1; Bit 2 (eq) = 0 if errors.
R03: Bit 3 (ne) = 0; Bit 2 (eq) = 1 if no errors.
Status
Half-Word
This status half-word reßects the result of the
operation. It is zero if the command completed
without errors. Refer to Appendix F for meanings
of returned error codes.
Memory
Address
Contains a pointer to the controller packet to send.
Note that the controller packet to send (as opposed
to the command packet) is controller and device
dependent. Information about this packet should
be found in the user's manual for the controller
and device being accessed.
Address
Modifier
VMEbus address modiÞer to use while
transferring data. If zero, a default value is selected
by the debugger. If nonzero, the speciÞed value is
used.