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Clarify SDT feature word bits.

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Obtained from:	 NetBSD
This commit is contained in:
Matthew N. Dodd 2004-08-31 21:51:51 +00:00
parent 320be82c0f
commit c15033ef44
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=134582
1 changed files with 5 additions and 4 deletions
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9
sys/i386/bios/mca_machdep.c
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@ -52,7 +52,7 @@ struct sys_config {
u_int8_t submodel;
u_int8_t bios_rev;
u_int8_t feature;
#define FEATURE_RESV 0x01 /* Reserved */
#define FEATURE_MCAISA 0x01 /* Machine contains both MCA and ISA bus*/
#define FEATURE_MCABUS 0x02 /* MicroChannel Architecture */
#define FEATURE_EBDA 0x04 /* Extended BIOS data area allocated */
#define FEATURE_WAITEV 0x08 /* Wait for external event is supported */
@ -103,14 +103,15 @@ bios_mcabus_present(void * dummy)
scp->model, scp->submodel, scp->bios_rev);
printf("BIOS SDT: features 0x%b\n", scp->feature,
"\20"
"\01RESV"
"\02MCABUS"
"\01MCA+ISA"
"\02MCA"
"\03EBDA"
"\04WAITEV"
"\05KBDINT"
"\06RTC"
"\07IC2"
"\08DMA3\n");
"\08DMA3"
"\n");
}
MCA_system = ((scp->feature & FEATURE_MCABUS) ? 1 : 0);