Operations Manual
PCI bus multi-8255/8254 adapter
{ 8253 Testing }
test := $1B0;
port[test+11] := $36;
port[test+11] := $76;
port[test+11] := $B6;
port[test+ 8] := $02; port[test+ 8] := $0;
port[test+ 9] := $32; port[test+ 9] := $0;
port[test+10] := $64; port[test+10] := $0;
repeat
test := $1B0;
port[test+3] := $80;
a := 0; subtest;
for i := 0 to 1000 do;
a := $ff; subtest;
test := test + 4;
port[test+3] := $80;
a := 0; subtest;
for i := 0 to 1000 do;
a := $ff; subtest
until keypressed;
end.
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DECISION Computer International
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