~ National ~ Semiconductor - Al Kossow's Bitsavers

---------------------------------------------------------------.~
79
BO
else if (var == i.ledl illediateldatal;
if Irx_eol) selected = false;
Bl }
B2
B3
B4
B5
B6 ; return ();
B7 ;}
BB ; lagerror ()
B9 ; {
90 ; baol resul t;
91 switth (error Jype)
n case RDI5:
93 resul t = err _rdi s (); If receiver diabled while active
94 break;
95 tase L"BT:
96 resul t = err J Ibt () ; If loss of midbi terror
97 break;
9B tase PARR:
99 result = err _parr 0 ; If pari ty error
100 break;
101 case DVF:
102 result = err _ovf () i If recei ver FIFO overrun
103 break;
104 default:
105 result = err _unknown 0; 1* strange error handler
106 break;
107
lOB return (resultl;
109
110
Z
I
CI1
....
a>
Addr
Line RXINT
111 ;err)lbto
112 ; (
113 if I! DA U ! seletted U !delay ILA)) return !fal se) j If delay of 6 usec
114 else (
115 logO; If bUlp error counters
116 return (true); If admi t defeat
117; )
liB ;}
119 i ---------------------------------------------------------------------
120 nale: RUNT
121 description: receiver interrupt handler
122
123 received datul is sent to other routines thru gp7'
124 5CP is set appropriatel y in lZ
125 BP5P - aeti ve addresses: bi ts 0-6
126 selected flag: bi t 7
127 BP6P - lulticount: bit 7-6
128 unused: bi t 5
TL/F 19635-12
2-215