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[/] [ao486/] [trunk/] [rtl/] [ao486/] [commands/] [CMD_CPUID.txt] - Rev 2
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<defines>
`define CMD_CPUID #AUTOGEN_NEXT_CMD
`define CMDEX_CPUID_STEP_LAST 4'd0
</defines>
<decode>
dec_ready_2byte_one && decoder[7:0] == 8'hA2
`CMD_CPUID
SET(dec_cmdex, `CMDEX_CPUID_STEP_LAST);
SET(consume_one);
SET(dec_is_complex);
</decode>
<microcode>
LOOP(`CMDEX_CPUID_STEP_LAST);
</microcode>
<read>
IF(rd_cmd == `CMD_CPUID);
SET(rd_req_eax);
SET(rd_req_ebx);
SET(rd_req_ecx);
SET(rd_req_edx);
IF(rd_mutex_busy_eax); SET(rd_waiting); ENDIF();
ENDIF();
</read>
<write>
IF(wr_cmd == `CMD_CPUID);
IF(eax == 32'd0);
SAVE(eax, 32'd1);
SAVE(ebx, "ineG");
SAVE(edx, "Aenu");
SAVE(ecx, "684O");
ENDIF();
IF(eax != 32'd0);
SAVE(eax, `CPUID_MODEL_FAMILY_STEPPING);
SAVE(ebx, 32'h00010000);
SAVE(ecx, 32'd0);
SAVE(edx, 32'd0);
ENDIF();
//reset pipeline
SET(wr_req_reset_micro);
SET(wr_req_reset_rd);
SET(wr_req_reset_exe);
ENDIF();
</write>