Service manual

Encore Processor Unit Cards
Enhanced Link Adaptor (SUN820-183)
CARD DESCRIPTION
The Enhanced link adapter is a ISA compatible PC card providing four transputer links and
services via a 25 way ‘D type’ connector. The card address is set by a six way DIL switch
which corresponds to the I/O address lines A9 to A4. Two IMS C011 link adapters convert
the ISA data to Transputer link format. Link data from the first C011 has the option to be
routed directly to the connector, or via the optional TRAM module, under software control.
The second C011’s link data is routed directly to the connector.
The board also supports four general purpose opto-isolated inputs and outputs which are
accessed via a 26 way IDC connector. A 10 way IDC connector is used to route six of the
on-board LED indicator signals to the Encore PC front panel.
LED INTERPRETATION
D6 (red) ON indicates Reset In from Spectra active
D8 (red) ON indicates Board Reset active
D11 (yellow) ON indicates TRAM Analyze active
D5 (red) ON indicates Reset 1 Out active
D10 (yellow) ON indicates Analyze 1 Out active
D1 (green) ON indicates Link 0 active
D2 (green) ON indicates Link 1 active
D3 (green) ON indicates Link 2 active
D4 (green) ON indicates Link 3 active
D9 (red) ON indicates TRAM error
D7 (red) ON indicates Error In active
D12 (yellow) ON indicates TRAM module enabled
Digital Service Manual
Issue 3 Page 12
D6
D8
D11
D5
D10
D1
D2
D3
D4
D9
D7
D12