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# LASER COMPUTER, INC.
LASER TURBO XT-2
Processor 8088
Processor Speed Unidentified
Chip Set Unidentified
Video Chip Set None
Maximum Onboard Memory 1MB
Maximum Video Memory None
Cache None
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options None
NPU Options 8087
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|----------------------+----------+---------------+----------|
| Auxiliary power | CN1 | Front panel | J12 |
| connector | | connector | |
|----------------------+----------+---------------+----------|
| Speaker | J11 | Reset switch | JP3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| | Parity check enabled | JP5 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Parity check disabled | JP5 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | SW1/1 | Off |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | NPU not installed | SW1/2 | On |
|---+---------------------------------+-------+--------------|
| | NPU installed | SW1/2 | Off |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | SW1/4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | SW2/4 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-----------+----------+------------+------------+-----------|
| 512KB (A) | None | None | None | (16) |
| | | | | 41256 |
|-----------+----------+------------+------------+-----------|
| 512KB (B) | None | (16) 41256 | None | None |
|-----------+----------+------------+------------+-----------|
| 640KB (A) | (4) 4464 | None | None | (16) |
| | | | | 41256 |
|-----------+----------+------------+------------+-----------|
| 1MB (B) | None | (16) 41256 | (16) 41256 | None |
|------------------------------------------------------------|
| Note: A = conventional memory. B = expanded memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM PARITY CONFIGURATION |
|------------------------------------------------------------|
| Size | U25/U41 | U35/U40 | U58/U59 | U76/U77 |
|------------+------------+----------+-----------+-----------|
| 512KB (A) | (2) 41256 | None | None | None |
|------------+------------+----------+-----------+-----------|
| 512KB (B) | None | None | (2) 41256 | None |
|------------+------------+----------+-----------+-----------|
| 640KB (A) | (2) 41256 | (2) 4164 | None | None |
|------------+------------+----------+-----------+-----------|
| 1MB (B) | None | None | (2) 41256 | (2) 41256 |
|------------------------------------------------------------|
| Note: A = conventional memory. B = expanded memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | SW1/3 |
|------------------------------+-----------------------------|
| 512KB | On |
|------------------------------+-----------------------------|
| 640KB | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| FLOPPY DRIVE SELECTION |
|------------------------------------------------------------|
| Drives installed | SW1/7 | SW1/8 |
|--------------------+-------------------+-------------------|
| 1 | On | On |
|--------------------+-------------------+-------------------|
| 2 | Off | On |
|--------------------+-------------------+-------------------|
| 3 | On | Off |
|--------------------+-------------------+-------------------|
| 4 | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MONITOR SELECTION |
|------------------------------------------------------------|
| Type | SW1/5 | SW1/6 |
|--------------------+-------------------+-------------------|
| EGA | On | On |
|--------------------+-------------------+-------------------|
| Color (40 x 25) | Off | On |
|--------------------+-------------------+-------------------|
| Color (80 x 25) | On | Off |
|--------------------+-------------------+-------------------|
| Monochrome | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O PORT ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW2/1 | SW2/2 | SW2/3 |
|---------------------------+----------+----------+----------|
| 208 | Off | On | On |
|---------------------------+----------+----------+----------|
| 218 | On | Off | On |
|---------------------------+----------+----------+----------|
| 258 | Off | Off | On |
|---------------------------+----------+----------+----------|
| 268 | On | On | Off |
|---------------------------+----------+----------+----------|
| 2A8 | Off | On | Off |
|---------------------------+----------+----------+----------|
| 2B8 | On | Off | Off |
|---------------------------+----------+----------+----------|
| 2E8 | Off | Off | Off |
|---------------------------+----------+----------+----------|
| Expansion memory disabled | On | On | On |
+------------------------------------------------------------+