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# TEKRAM TECHNOLOGY CO., LTD.
DC-680, DC-680T
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 32-bit, VL-bus |
|-------------------+----------------------------------------|
| Size: | Three/quarter-length, full-height card |
|-------------------+----------------------------------------|
| Hard drive | Four IDE (AT) Interface drives |
| supported: | |
|-------------------+----------------------------------------|
| Floppy drives | Two 360KB, 720KB, 1.2MB, or 1.44MB |
| supported: | drives |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|-----------------------------------------------+------------|
| 40-pin IDE (AT) Interface connector - IDE-0 | CN1 |
|-----------------------------------------------+------------|
| 40-pin IDE (AT) Interface connector - IDE-1 | CN2 |
|-----------------------------------------------+------------|
| 34-pin control cable connector - floppy drive | CN3 |
|-----------------------------------------------+------------|
| 4-pin connector - drive active LED | JP1 |
|-----------------------------------------------+------------|
| 4-pin connector - cache error speaker | JP2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|--------------------------------------+-----------+---------|
| » | IDE-0 damping resistor enabled | JDR0 | open |
|---+----------------------------------+-----------+---------|
| | IDE-0 damping resistor disabled | JDR0 | closed |
|---+----------------------------------+-----------+---------|
| » | IDE-1 damping resistor enabled | JDR1 | open |
|---+----------------------------------+-----------+---------|
| | IDE-1 damping resistor disabled | JDR1 | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRIVE ACTIVE LED ERROR CODES (IMMEDIATELY AFTER POWER-UP) |
|------------------------------------------------------------|
| Status | Function |
|----------------------------+-------------------------------|
| One short flash | No cache DRAM installed |
|----------------------------+-------------------------------|
| Two short flashes | CPU error |
|----------------------------+-------------------------------|
| Three short flashes | SRAM error |
|----------------------------+-------------------------------|
| Four short flashes | Timer error |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Some versions of this board have two 512KB x 8 DRAM chips |
| mounted in place of Bank 0. In such a case the board will |
| work without additional memory. In all other cases a pair |
| of 256KB, 1MB, or 4MB SIMM modules must be installed in |
| Bank 0 for the board to function. |
| |
| Jumpers JP3 and JP4 are factory-configured - do not alter. |
+------------------------------------------------------------+