Date   : Fri, 03 Jan 1986 23:11:07 GMT
From   : Alex Pensky <aep%abic.uucp@BRL.ARPA>
Subject: Re: 8251 Usart

> INITIALISE:       MVI     A,RESET         ;Puts 8251 in instruction mode
>           OUT     MCNTR           ;
>           MVI     A,MINIT1        ;sets up baud, etc.
>           OUT     MCNTR           ;
>           MVI     A,MINIT2        ;Puts 8251 back in normal mode
>           OUT     MCNTR
>           JMP     0
Hmm, how about that JMP 0? Does your BIOS reset the 8251 and write
"reasonable" MINIT1 and MINIT2 bytes to it on a warm boot? Mine sure
does (SANYO MBC-1000).  I use a routine just like yours but I just
return after calling it.