AMD ATI CTM, Техническое справочное руководство

Страница: 26 / 56

ATI CTM Guide v. 1.01 © 2006 Advanced Micro Devices, Inc.
22 CTM Commands
Parameter 0: condition
Set Condition Location Command
The
set_cond_loc
command takes a single parameter that controls the conditional test return value for requests
either from the PE requests or the DPP. If the location is set to the DPP, the CO always returns true to the PE and
performs the conditional test for any DPP request. Conversely, if the location is set to the PE, the CO always returns
true to the DPP and performs the conditional test for any PE request. The location is maintained until the next
set_cond_loc
command is received.
Parameter 0: loc
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
cond
Bits Field Name Description
2:0 condition Test Condition:
• 0 - Never (always false)
• 1 - Less (true if client value is less than buffer value)
• 2 - Less or Equal (true if client value is less or equal to buffer value)
• 3 - Equal (true if client value equals buffer value)
• 4 - Greater or Equal (true if client value is greater or equal to buffer value)
• 5 - Greater (true if client value is greater than buffer value)
• 6 - Not Equal (true if client value is not equal to buffer value)
• 7 - Always (always true)
31:3 Reserved Reserved
31 30 29 28 27 26 25 24 23 22 21 20 19 18 17 16 15 14 13 12 11 10 9 8 7 6 5 4 3 2 1 0
l
Bits Field Name Description
0 loc Sets the location of the conditional test:
• 0 - DPP
• 1 -- PE
31:1 Reserved Reserved