NEC CP/M-86 - Page 118

Advanced BIOS Functions
6-28
DL = Asynchronous mode byte for J1. PD8251
7 6 5
4
3
2
1 o
I S2 lSI I EP I PEN I L2 I LI I B2 I B 1 I
baud rate
~----------------~~
~--------------------~~
'*t baud rate
L...-:..
length of character
010 1
o 0 1 1
5
bit 6 bit 7 bit 8 bit
parity enable/disable
'-- _________ -<{ 1 = enable
0= disable
parity check
{ 1 = even
~----------------~
0= odd
length of stop bit
1 1
o 1
1 bit 2 bit
NOTE
Typically, when communication software is
operating, the system timer is off and the key-
board repeat feature does not operate.