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# RELIALOGIC CORPORATION PRIVATE, LTD.
XL221
+------------------------------------------------------------+
|------------------------------------------------------------|
| Data bus: | 16-bit, ISA |
|--------------------------+---------------------------------|
| Size: | Half-length, full-height card |
|--------------------------+---------------------------------|
| Hard drive supported: | Up to 7 SCSI devices |
|--------------------------+---------------------------------|
| Floppy drives supported: | None |
+------------------------------------------------------------+
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|----------------------------------------+-------------------|
| 50-pin SCSI connector - external | CN1 |
|----------------------------------------+-------------------|
| 50-pin SCSI connector - internal | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT SELECTION |
|------------------------------------------------------------|
| IRQ | JP2/1 | JP2/2 | JP2/3 | JP2/4 |
|------------+-----------+-----------+-----------+-----------|
| ยป | 11 | open | open | closed | open |
|---+--------+-----------+-----------+-----------+-----------|
| | 10 | open | open | open | closed |
|---+--------+-----------+-----------+-----------+-----------|
| | 12 | open | closed | open | open |
|---+--------+-----------+-----------+-----------+-----------|
| | 15 | closed | open | open | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | JP3/1 | JP3/2 |
|--------------------+-------------------+-------------------|
| C8000h | open | open |
|--------------------+-------------------+-------------------|
| CC000h | open | closed |
|--------------------+-------------------+-------------------|
| D8000h | closed | open |
|--------------------+-------------------+-------------------|
| DC000h | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Remove terminators only when XL221 is not first or last in |
| the SCSI devices chain. |
+------------------------------------------------------------+