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# JAMECO ELECTRONIC COMPONENTS
JE1081
Card Type Memory card
Maximum Onboard Memory 2MB DRAM
Data Bus 16-bit ISA
Card Size Full-length, full-height card
IMG IMG 1
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| | Parity checking enabled | SW1/8 | On |
|---+---------------------------------+-------+--------------|
| | Parity checking disabled | SW1/8 | Off |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | SW2/7 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | SW2/8 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Speed 6MHz/8MHz | JP1 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Speed 10MHz/12Mhz | JP1 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| KILOBYTES STARTING ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW1/1 | SW1/2 | SW1/3 |
|---------------+--------------+--------------+--------------|
| 0KB | Off | Off | Off |
|---------------+--------------+--------------+--------------|
| 125KB | On | Off | Off |
|---------------+--------------+--------------+--------------|
| 256KB | Off | On | Off |
|---------------+--------------+--------------+--------------|
| 384KB | On | On | Off |
|---------------+--------------+--------------+--------------|
| 512KB | Off | Off | On |
|---------------+--------------+--------------+--------------|
| 640KB | On | Off | On |
|---------------+--------------+--------------+--------------|
| 768KB | Off | On | On |
|---------------+--------------+--------------+--------------|
| 896KB | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MEGEBYTES STARTING ADDRESS SELECTION |
|------------------------------------------------------------|
| Address | SW1/4 | SW1/5 | SW1/6 | SW1/7 |
|------------+-----------+-----------+-----------+-----------|
| 0MB | Off | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 1MB | On | Off | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 2MB | Off | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 3MB | On | On | Off | Off |
|------------+-----------+-----------+-----------+-----------|
| 4MB | Off | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 5MB | On | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 6MB | Off | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 7MB | On | On | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 8MB | Off | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 9MB | On | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 10MB | Off | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 11MB | On | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 12MB | Off | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 13MB | On | Off | On | On |
|------------+-----------+-----------+-----------+-----------|
| 14MB | Off | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| 15MB | On | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE/EXTENDED MEMORY SELECTION |
|------------------------------------------------------------|
| Total | Base/extended | Possible expanded | SW2/5 | SW2/6 |
|--------+---------------+-------------------+-------+-------|
| 0.5Mb | 0.5Mb | 0.0Mb | Off | Off |
|--------+---------------+-------------------+-------+-------|
| 1.0Mb | 0.5Mb | 0.5Mb | Off | Off |
|--------+---------------+-------------------+-------+-------|
| 1.5Mb | 0.5Mb | 1.0Mb | Off | Off |
|--------+---------------+-------------------+-------+-------|
| 2.0Mb | 0.5Mb | 1.5Mb | Off | Off |
|--------+---------------+-------------------+-------+-------|
| 1.0Mb | 1.0Mb | 0.0Mb | Off | On |
|--------+---------------+-------------------+-------+-------|
| 1.5Mb | 1.0Mb | 0.5Mb | Off | On |
|--------+---------------+-------------------+-------+-------|
| 2.0Mb | 1.0Mb | 1.0Mb | Off | On |
|--------+---------------+-------------------+-------+-------|
| 1.5Mb | 1.5Mb | 0.0Mb | On | Off |
|--------+---------------+-------------------+-------+-------|
| 2.0Mb | 1.5Mb | 0.5Mb | On | Off |
|--------+---------------+-------------------+-------+-------|
| 2.0Mb | 2.0Mb | 0.0Mb | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXPANDED MEMORY I/O PORT ADDRESS |
|------------------------------------------------------------|
| Address | SW2/1 | SW2/2 | SW2/3 | SW2/4 |
|------------+-----------+-----------+-----------+-----------|
| 208h | On | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| 218h | Off | On | On | On |
|------------+-----------+-----------+-----------+-----------|
| 258h | Off | On | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 268h | On | Off | Off | On |
|------------+-----------+-----------+-----------+-----------|
| 2A8h | On | Off | On | Off |
|------------+-----------+-----------+-----------+-----------|
| 2B8h | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| If extended memory is already in the system, the starting |
| address of the JE1081 is figured by adding 1024 to the |
| amount of the extended memory. Divide the starting address |
| by 1024 to get the total Megabytes. The result will be |
| used to figure the settings for S1/4 - S1/7. The remainder |
| is used to select the settings of S1/1 - S1/3. |
+------------------------------------------------------------+