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# TRANTOR SYSTEMS, LTD.
T128
+------------------------------------------------------------+
+------------------------------------------------------------+
Data bus: 8-bit, ISA
Size: Three-quarter length, full-height card
Hard drives supported: Up to seven SCSI devices
Floppy drives supported: None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Location |
|------------------------------------------+-----------------|
| 50-pin SCSI connector-internal | CN1 |
|------------------------------------------+-----------------|
| 50-pin SCSI connector-external | CN2 |
|------------------------------------------+-----------------|
| 4-pin connector-Drive Active LED | CN3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Location | Setting |
|-----------------------------------+--------------+---------|
| » | Full Handshake Interlock | SW1/switch 4 | off |
| | disabled | | |
|---+-------------------------------+--------------+---------|
| | Full Handshake Interlock | SW1/switch 4 | on |
| | enabled | | |
|---+-------------------------------+--------------+---------|
| » | BIOS enabled | SW1/switch 5 | on |
|---+-------------------------------+--------------+---------|
| | BIOS disabled | SW1/switch 5 | off |
|---+-------------------------------+--------------+---------|
| » | Zero wait-state enabled | SW1/switch 6 | on |
|---+-------------------------------+--------------+---------|
| | Zero wait-state disabled | SW1/switch 6 | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIOS ADDRESS |
|------------------------------------------------------------|
| Address | SW1/switch 7 | SW1/switch 8 |
|------------------+--------------------+--------------------|
| CC000h | on | on |
|------------------+--------------------+--------------------|
| C8000h | on | off |
|------------------+--------------------+--------------------|
| DC000h | off | on |
|------------------+--------------------+--------------------|
| D8000h | off | off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| INTERRUPT REQUEST |
|------------------------------------------------------------|
| IRQ | JP1 | Position |
|-------------------+--------------------+-------------------|
| IRQ3 | pins 2 & 4 only | closed |
|-------------------+--------------------+-------------------|
| IRQ5 | pins 1 & 3 only | closed |
|-------------------+--------------------+-------------------|
| IRQ7 | pins 3 & 5 only | closed |
|-------------------+--------------------+-------------------|
| Disabled | pins 1 through 6 | open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Note: SW1/switch 1-3 are reserved and must be left ‘open’. |
| JP1/pins 7-12 are not used. |
+------------------------------------------------------------+