Intel 815 Manuel D’Utilisation
Intel® 815 Chipset: Graphics Controller PRM, Rev 1.0
R
154
11.2.2. GFXCMDPARSER_BREAKPOINT_INTERRUPT
This instruction will generate a breakpoint interrupt and cause the parser to stop until the interrupt is
cleared by writing the Interrupt Identity Register. If the interrupting event is masked through the IMR,
the parser continues parsing. However, if the event is unmasked in the IMR and the interrupt is not
enabled through the IER, the parser halts until the IIR is cleared. In this case the software has to poll the
IIR to check for this condition and clear the IIR as an interrupt will not occur.
cleared by writing the Interrupt Identity Register. If the interrupting event is masked through the IMR,
the parser continues parsing. However, if the event is unmasked in the IMR and the interrupt is not
enabled through the IER, the parser halts until the IIR is cleared. In this case the software has to poll the
IIR to check for this condition and clear the IIR as an interrupt will not occur.
DWord Bit
Description
0 31:29
Client: 000 – Instruction Parser
28:23
Opcode: 01h
22:0
Reserved. MBZ
11.2.3. GFXCMDPARSER_USER_INTERRUPT
This instruction will generate a user-defined interrupt if the interrupt is enabled and not masked. The
parser continues parsing after processing this instruction. If a user interrupt is currently outstanding (not
yet cleared in the IIR) this packet has no effect.
parser continues parsing after processing this instruction. If a user interrupt is currently outstanding (not
yet cleared in the IIR) this packet has no effect.
Dword Bit
Description
0 31:29
Client: 000 – Instruction Parser
28:23
Opcode: 02h
22:0
“Reserved MBZ”