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# APPARAT, INC.
AT COMBO CARD
Card Type Multi-I/O
Chipset Unidentified
Maximum Onboard Memory 3MB DRAM
I/O Options Parallel port, serial port
Data Bus 16-bit ISA
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|---------------------+-------+----------------------+-------|
| Serial port | CN1 | Parallel port | CN2 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|--------------------------------------+--------+------------|
| Serial port address set to COM1: | E1 | Pins 2 & 3 |
| (3F8h) | | closed |
|--------------------------------------+--------+------------|
| Serial port address set to COM2: | E1 | Pins 1 & 2 |
| (2F8h) | | closed |
|--------------------------------------+--------+------------|
| Parallel port address set to 378h | E3 | Pins 2 & 3 |
| | | closed |
|--------------------------------------+--------+------------|
| Parallel port address set to 278h | E3 | Pins 1 & 2 |
| | | closed |
|--------------------------------------+--------+------------|
| Serial port enabled | E5 | Closed |
|--------------------------------------+--------+------------|
| Serial port disabled | E5 | Open |
|--------------------------------------+--------+------------|
| Parallel port enabled | E6 | Closed |
|--------------------------------------+--------+------------|
| Parallel port disabled | E6 | Open |
|------------------------------------------------------------|
| Note:Disabling a port does not disable its respective |
| interrupt; this must be done with the interrupt |
| setting jumpers. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| STARTING MEMORY ADDRESS SELECTION |
|------------------------------------------------------------|
| Setting | System Board Memory | SW1/1 | SW1/2 |
|-------------+---------------------+------------+-----------|
| 256KB | 256KB | On | On |
|-------------+---------------------+------------+-----------|
| 512KB | 512KB | On | Off |
|-------------+---------------------+------------+-----------|
| 1024KB | 640KB | Off | On |
|-------------+---------------------+------------+-----------|
| 1408KB | 1MB | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Starting | Bank 0 | Bank 1 | Bank | Bank | Bank | Bank |
| | | | 2 | 3 | 4 | 5 |
| Address | | | | | | |
| Setting | | | | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 256KB | (18) | None | None | None | None | None |
| | 256K x | | | | | |
| | 1 | | | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 256KB | (18) | (18) | None | None | None | None |
| | 256K x | 256K x | | | | |
| | 1 | 1 | | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 256KB | (18) | (18) | (18) | None | None | None |
| | 256K x | 256K x | 256K | | | |
| | 1 | 1 | x 1 | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 256KB | (18) | (18) | (18) | (18) | None | None |
| | 256K x | 256K x | 256K | 256K | | |
| | 1 | 1 | x 1 | x 1 | | |
|----------+--------+--------+-------+-------+-------+-------|
| 256KB | (18) | (18) | (18) | (18) | (18) | None |
| | 256K x | 256K x | 256K | 256K | 256K | |
| | 1 | 1 | x 1 | x 1 | x 1 | |
|----------+--------+--------+-------+-------+-------+-------|
| 256KB | (18) | (18) | (18) | (18) | (18) | (18) |
| | 256K x | 256K x | 256K | 256K | 256K | 256K |
| | 1 | 1 | x 1 | x 1 | x 1 | x 1 |
|----------+--------+--------+-------+-------+-------+-------|
| 512KB | (18) | None | None | None | None | None |
| | 64K x | | | | | |
| | 1 | | | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 512KB | (18) | (18) | None | None | None | None |
| | 64K x | 256K x | | | | |
| | 1 | 1 | | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 512KB | (18) | (18) | (18) | None | None | None |
| | 64K x | 256K x | 256K | | | |
| | 1 | 1 | x 1 | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 512KB | (18) | (18) | (18) | (18) | None | None |
| | 64K x | 256K x | 256K | 256K | | |
| | 1 | 1 | x 1 | x 1 | | |
|----------+--------+--------+-------+-------+-------+-------|
| 512KB | (18) | (18) | (18) | (18) | (18) | None |
| | 64K x | 256K x | 256K | 256K | 256K | |
| | 1 | 1 | x 1 | x 1 | x 1 | |
|----------+--------+--------+-------+-------+-------+-------|
| 512KB | (18) | (18) | (18) | (18) | (18) | (18) |
| | 64K x | 256K x | 256K | 256K | 256K | 256K |
| | 1 | 1 | x 1 | x 1 | x 1 | x 1 |
|----------+--------+--------+-------+-------+-------+-------|
| 1024KB | (18) | (18) | None | None | None | None |
| | 256K x | 256K x | | | | |
| | 1 | 1 | | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 1024KB | (18) | (18) | (18) | None | None | None |
| | 256K x | 256K x | 256K | | | |
| | 1 | 1 | x 1 | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 1024KB | (18) | (18) | (18) | (18) | None | None |
| | 256K x | 256K x | 256K | 256K | | |
| | 1 | 1 | x 1 | x 1 | | |
|----------+--------+--------+-------+-------+-------+-------|
| 1024KB | (18) | (18) | (18) | (18) | (18) | None |
| | 256K x | 256K x | 256K | 256K | 256K | |
| | 1 | 1 | x 1 | x 1 | x 1 | |
|----------+--------+--------+-------+-------+-------+-------|
| 1024KB | (18) | (18) | (18) | (18) | (18) | (18) |
| | 256K x | 256K x | 256K | 256K | 256K | 256K |
| | 1 | 1 | x 1 | x 1 | x 1 | x 1 |
|----------+--------+--------+-------+-------+-------+-------|
| 1408KB | (18) | (18) | None | None | None | None |
| | 256K x | 256K x | | | | |
| | 1 | 1 | | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 1408KB | (18) | (18) | (18) | None | None | None |
| | 256K x | 256K x | 256K | | | |
| | 1 | 1 | x 1 | | | |
|----------+--------+--------+-------+-------+-------+-------|
| 1408KB | (18) | (18) | (18) | (18) | None | None |
| | 256K x | 256K x | 256K | 256K | | |
| | 1 | 1 | x 1 | x 1 | | |
|----------+--------+--------+-------+-------+-------+-------|
| 1408KB | (18) | (18) | (18) | (18) | (18) | None |
| | 256K x | 256K x | 256K | 256K | 256K | |
| | 1 | 1 | x 1 | x 1 | x 1 | |
|----------+--------+--------+-------+-------+-------+-------|
| 1408KB | (18) | (18) | (18) | (18) | (18) | (18) |
| | 256K x | 256K x | 256K | 256K | 256K | 256K |
| | 1 | 1 | x 1 | x 1 | x 1 | x 1 |
|------------------------------------------------------------|
| Note:Bank 0 may be used for either base |
| (conventional) or extended memory, but not both. |
| Therefore, when the starting address is set to either |
| 256KB or 512KB, Bank 0 is used to raise the base |
| memory to 640KB. Any remaining memory in Bank 0 is |
| ignored. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Number | SW1/3 | SW1/4 | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
| | | | | | | |
| Banks | | | | | | |
| | | | | | | |
| Installed | | | | | | |
|-----------+--------+-------+-------+-------+-------+-------|
| 1 | On | Off | Off | Off | Off | Off |
|-----------+--------+-------+-------+-------+-------+-------|
| 2 | On | On | Off | Off | Off | Off |
|-----------+--------+-------+-------+-------+-------+-------|
| 3 | On | On | On | Off | Off | Off |
|-----------+--------+-------+-------+-------+-------+-------|
| 4 | On | On | On | On | Off | Off |
|-----------+--------+-------+-------+-------+-------+-------|
| 5 | On | On | On | On | On | Off |
|-----------+--------+-------+-------+-------+-------+-------|
| 6 | On | On | On | On | On | On |
|------------------------------------------------------------|
| Note:SW1/3 to SW1/8 enable Banks 0 through 5 |
| respectively. Banks 3, 4, and 5 are located on a |
| daughterboard. The locations of the memory and |
| daughterboard headers are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| Setting | E2 |
|----------------------------+-------------------------------|
| IRQ3 | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| IRQ4 | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| Disabled | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT INTERRUPT SELECTION |
|------------------------------------------------------------|
| Setting | E4 |
|----------------------------+-------------------------------|
| IRQ5 | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| IRQ7 | Pins 2 & 3 closed |
|----------------------------+-------------------------------|
| Disabled | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS NOTES |
|------------------------------------------------------------|
| The banks on the AT Combo card must be completely |
| populated before the daughterboard can be used. |
| |
| The daughterboard contains banks 3 through 5. |
+------------------------------------------------------------+