d/freebsd-nq
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

Bring back the more heavy-weight version of the mesgin inb routines. Davidg's

Browse Source 
testing made me think that some of the checks were superfluous, but
wcarchive (and Amancio) know better.
This commit is contained in:
Justin T. Gibbs 1996-01-05 16:11:49 +00:00
parent 28ae0646aa
commit a27c063027
1 changed files with 12 additions and 4 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

16
sys/dev/aic7xxx/aic7xxx.seq
View File

@ -880,14 +880,22 @@ mk_mesg1:
*/
inb_next:
mov NONE,SCSIDATL /*dummy read from latch to ACK*/
inb_first:
call inb_last
inb_next_wait:
test SSTAT1,PHASEMIS jnz mesgin_phasemis
test SSTAT0,SPIORDY jz inb_first /* wait for next byte */
test SSTAT0,SPIORDY jz inb_next_wait /* wait for next byte */
inb_first:
mov DINDEX,SINDEX
mov DINDIR,SCSIBUSL ret /*read byte directly from bus*/
inb_last:
mov NONE,SCSIDATL ret /*dummy read from latch to ACK*/
clr STCNT2
clr STCNT1
mvi STCNT0,0x01
mov NONE,SCSIDATL /*dummy read from latch to ACK*/
inb_last_wait:
test SSTAT0,SDONE jz inb_last_wait /* Wait for completion */
ret
mesgin_phasemis: