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# INVISIBLE SOFTWARE, INC.
INVISIBLE EMS
Card Type Memory card
Maximum Onboard Memory 8192KB DRAM
Data Bus 16-bit ISA
Card Size Three-quarter length, full-height card
IMG IMG 1
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|----------------------------------------+-------+-----------|
| Parity enable | W1 | Closed |
|----------------------------------------+-------+-----------|
| Parity disable | W1 | Open |
|----------------------------------------+-------+-----------|
| High memory enable | SW1/1 | Off |
|----------------------------------------+-------+-----------|
| High memory disable | SW1/1 | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS TYPE SELECTION |
|------------------------------------------------------------|
| BUS | W2 | W3 | W4 | W5 | W6 | W7 | W8 | W9 | W10 | W11 |
|-----+-----+-----+-----+----+----+----+----+----+-----+-----|
| XT | 2 & | 2 & | 2 & | 2 | 2 | 2 | 2 | 2 | 2 & | 2 & |
| | 3 | 3 | 3 | & | & | & | & | & | 3 | 3 |
| | | | | 3 | 3 | 3 | 3 | 3 | | |
|-----+-----+-----+-----+----+----+----+----+----+-----+-----|
| AT | 1 & | 1 & | 1 & | 1 | 1 | 1 | 1 | 1 | 1 & | 1 & |
| | 2 | 2 | 2 | & | & | & | & | & | 2 | 2 |
| | | | | 2 | 2 | 2 | 2 | 2 | | |
|------------------------------------------------------------|
| Note: Pins designated are in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BIT MODE SELECTION |
|------------------------------------------------------------|
| Mode | W15 | W16 | W17 | W18 | W19 | W20 |
|--------+--------+--------+--------+--------+-------+-------|
| 8-bit | Closed | Closed | Open | Open | Open | Open |
|--------+--------+--------+--------+--------+-------+-------|
|8/16-bit| Open | Open | Closed | Closed | Open | Open |
|--------+--------+--------+--------+--------+-------+-------|
| 16-bit | Open | Open | Open | Open |Closed |Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+-----------------------+--------------------|
| 512KB | (9) 256K x 1 | (9) 256K x 1 |
|---------------+-----------------------+--------------------|
| 2048KB | (9) 1M x 1 | (9) 1M x 1 |
|---------------+-----------------------+--------------------|
| 8192KB | (9) 4M x 1 | (9) 4M x 1 |
|------------------------------------------------------------|
| Note: 16-pin memory chips should be mounted in the lower |
| left corner of the socket. 18-pin memory chips should be |
| mounted in the upper right corner of the socket. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MEMORY CHIP TYPE SELECTION |
|------------------------------------------------------------|
| Type | W21 | W22 |
|------------------+--------------------+--------------------|
| 256K x 1 | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 1M x 1 | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 4M x 1 DRAM | Pins 1 & 2 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| ADAPTER SELECTION |
|------------------------------------------------------------|
| Setting | W13 | W14 |
|------------------+--------------------+--------------------|
| Primary | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Secondary | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| I/O ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | SW1/6 | SW1/7 | SW1/8 |
|--------------+--------------+---------------+--------------|
| 208h | Closed | Closed | Closed |
|--------------+--------------+---------------+--------------|
| 218h | Closed | Closed | Open |
|--------------+--------------+---------------+--------------|
| 248h | Open | Closed | Closed |
|--------------+--------------+---------------+--------------|
| 258h | Open | Closed | Open |
|--------------+--------------+---------------+--------------|
| 2A8h | Closed | Open | Closed |
|--------------+--------------+---------------+--------------|
| 2B8h | Closed | Open | Open |
|--------------+--------------+---------------+--------------|
| 2E8h | Open | Open | Closed |
|--------------+--------------+---------------+--------------|
| 2F8h | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DOS BACKFILL SELECTION |
|------------------------------------------------------------|
| Backfill | SW1/2 | SW1/3 | SW1/4 | SW1/5 |
|-----------------+----------+----------+----------+---------|
| None | Closed | Closed | Closed | Closed |
|-----------------+----------+----------+----------+---------|
| 512K-640K | Open | Closed | Closed | Closed |
|-----------------+----------+----------+----------+---------|
| 384K-640K | Open | Open | Closed | Closed |
|-----------------+----------+----------+----------+---------|
| 256K-640K | Open | Open | Closed | Open |
|-----------------+----------+----------+----------+---------|
| 128K-640K | Open | Open | Open | Closed |
|-----------------+----------+----------+----------+---------|
| 0K-640K | Open | Open | Open | Open |
|-----------------+----------+----------+----------+---------|
| 384K-512K | Closed | Open | Closed | Closed |
|-----------------+----------+----------+----------+---------|
| 256K-512K | Closed | Open | Closed | Open |
|-----------------+----------+----------+----------+---------|
| 128K-512K | Closed | Open | Open | Closed |
|-----------------+----------+----------+----------+---------|
| 0K-512K | Closed | Open | Open | Open |
|------------------------------------------------------------|
| Note: This feature allows user with less than 640K of |
| onboard memory to increase DOS memory to 640K. |
+------------------------------------------------------------+