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# MONOLITHIC SYSTEMS, INC. (COLORADO MSI)
JUSTRAM/AT16
Card Type Memory
Maximum Onboard Memory 16MB DRAM
Data Bus 16-bit ISA
IMG IMG 1
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|----------------------------------------+-------+-----------|
| » | Normal address timing | E3 | Pins 2 & |
| | | | 3 closed |
|---+------------------------------------+-------+-----------|
| | 20ns delay for non-compatible | E3 | Pins 1 & |
| | machines | | 2 closed |
|---+------------------------------------+-------+-----------|
| » | All memory on board used for | SW3/4 | Off |
| | extended or expanded memory | | |
|---+------------------------------------+-------+-----------|
| | First 128KB on board used for | SW3/4 | On |
| | conventional memory above 512KB | | |
|---+------------------------------------+-------+-----------|
| » | Zero wait states enabled | SW3/5 | On |
|---+------------------------------------+-------+-----------|
| | Zero wait states disabled | SW3/5 | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 512KB | (2) 256K x | None | None | None |
| | 9 | | | |
|-------+-------------+------------+------------+------------|
| 1MB | (2) 256K x | (2) 256K x | None | None |
| | 9 | 9 | | |
|-------+-------------+------------+------------+------------|
| 1.5MB | (2) 256K x | (2) 256K x | (2) 256K x | None |
| | 9 | 9 | 9 | |
|-------+-------------+------------+------------+------------|
| 2MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 2MB | (2) 1M x 9 | None | None | None |
|-------+-------------+------------+------------+------------|
| 2.5MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 3MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 3.5MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 4MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 4MB | (2) 1M x 9 | (2) 1M x 9 | None | None |
|-------+-------------+------------+------------+------------|
| 6MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | None |
|-------+-------------+------------+------------+------------|
| 8MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 10MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 12MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 14MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
|-------+-------------+------------+------------+------------|
| 16MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM (CON’T) |
|------------------------------------------------------------|
| Size | Bank 4 | Bank 5 | Bank 6 | Bank 7 |
|-------+-------------+------------+------------+------------|
| 512KB | None | None | None | None |
|-------+-------------+------------+------------+------------|
| 1MB | None | None | None | None |
|-------+-------------+------------+------------+------------|
| 1.5MB | None | None | None | None |
|-------+-------------+------------+------------+------------|
| 2MB | None | None | None | None |
|-------+-------------+------------+------------+------------|
| 2MB | None | None | None | None |
|-------+-------------+------------+------------+------------|
| 2.5MB | (2) 256K x | None | None | None |
| | 9 | | | |
|-------+-------------+------------+------------+------------|
| 3MB | (2) 256K x | (2) 256K x | None | None |
| | 9 | 9 | | |
|-------+-------------+------------+------------+------------|
| 3.5MB | (2) 256K x | (2) 256K x | (2) 256K x | None |
| | 9 | 9 | 9 | |
|-------+-------------+------------+------------+------------|
| 4MB | (2) 256K x | (2) 256K x | (2) 256K x | (2) 256K x |
| | 9 | 9 | 9 | 9 |
|-------+-------------+------------+------------+------------|
| 4MB | None | None | None | None |
|-------+-------------+------------+------------+------------|
| 6MB | None | None | None | None |
|-------+-------------+------------+------------+------------|
| 8MB | None | None | None | None |
|-------+-------------+------------+------------+------------|
| 10MB | (2) 1M x 9 | None | None | None |
|-------+-------------+------------+------------+------------|
| 12MB | (2) 1M x 9 | (2) 1M x 9 | None | None |
|-------+-------------+------------+------------+------------|
| 14MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | None |
|-------+-------------+------------+------------+------------|
| 16MB | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 | (2) 1M x 9 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM JUMPERS |
|------------------------------------------------------------|
| Setting | E1 |
|-------------------------------+----------------------------|
| 256K x 9 SIPs used | Open |
|-------------------------------+----------------------------|
| 1M x 9 SIPs used | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXPANDED MEMORY BASE I/O ADDRESSES |
|------------------------------------------------------------|
| Setting | SW4/1 | SW4/2 | SW4/3 |
|---------------+---------------+--------------+-------------|
| 208h | On | On | Off |
|---------------+---------------+--------------+-------------|
| 248h | On | Off | Off |
|---------------+---------------+--------------+-------------|
| 288h | Off | On | Off |
|---------------+---------------+--------------+-------------|
| 2C8h | Off | Off | Off |
|---------------+---------------+--------------+-------------|
| Disabled | N/A | N/A | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED MEMORY SIZE |
|------------------------------------------------------------|
| 256KB SIP Size | 1MB SIP Size | SW3/1 | SW3/2 | SW3/3 |
|----------------+--------------+---------+---------+--------|
| 512KB | 2MB | On | On | On |
|----------------+--------------+---------+---------+--------|
| 1MB | 4MB | On | On | Off |
|----------------+--------------+---------+---------+--------|
| 1.5MB | 6MB | On | Off | On |
|----------------+--------------+---------+---------+--------|
| 2MB | 8MB | On | Off | Off |
|----------------+--------------+---------+---------+--------|
| 2.5MB | 10MB | Off | On | On |
|----------------+--------------+---------+---------+--------|
| 3MB | 12MB | Off | On | Off |
|----------------+--------------+---------+---------+--------|
| 3.5MB | 14MB | Off | Off | On |
|----------------+--------------+---------+---------+--------|
| 4MB | 16MB | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED MEMORY STARTING ADDRESS |
|------------------------------------------------------------|
| Setting | SW2/1 |SW2/2 |SW2/3 |SW2/4 |SW2/5 |SW2/6 |SW2/7 |
|----------+-------+------+------+------+------+------+------|
| 1024KB | On | On | On | Off | On | On | On |
|----------+-------+------+------+------+------+------+------|
| 1152KB | On | On | On | Off | On | On | Off |
|----------+-------+------+------+------+------+------+------|
| 1280KB | On | On | On | Off | On | Off | On |
|----------+-------+------+------+------+------+------+------|
| 1408KB | On | On | On | Off | On | Off | Off |
|----------+-------+------+------+------+------+------+------|
| 1536KB | On | On | On | Off | Off | On | On |
|----------+-------+------+------+------+------+------+------|
| 15744KB | Off | Off | Off | Off | On | Off | Off |
|----------+-------+------+------+------+------+------+------|
| 15872KB | Off | Off | Off | Off | Off | On | On |
|----------+-------+------+------+------+------+------+------|
| 16000KB | Off | Off | Off | Off | Off | On | Off |
|----------+-------+------+------+------+------+------+------|
| 16128KB | Off | Off | Off | Off | Off | Off | On |
|----------+-------+------+------+------+------+------+------|
| 16256KB | Off | Off | Off | Off | Off | Off | Off |
|----------+-------+------+------+------+------+------+------|
| Disabled | Off | Off | Off | Off | Off | Off | Off |
|------------------------------------------------------------|
| Note: A total of 112 memory address settings are |
| available. The switches are a binary representation of |
| the decimal memory addresses. SW2/1 is the Most |
| Significant Bit and switch SW2/7 is the Least |
| Significant Bit. The switches have the following |
| decimal values: SW2/1=8192, SW2/2=4096, SW2/3=2048, |
| SW2/4=1024, SW2/5=512, SW2/6=256, SW2/7=128. Turn off |
| the switches and add the values of the switches that |
| are off obtain the correct starting memory address. |
| (Off=1, On=0) If SW2 is set to Disabled, SW1 should |
| also be set to Disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED MEMORY ENDING ADDRESS |
|------------------------------------------------------------|
| Setting | SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7 |
|----------+-------+------+------+------+------+------+------|
| 1152KB | On | On | On | Off | On | On | On |
|----------+-------+------+------+------+------+------+------|
| 1280KB | On | On | On | Off | On | On | Off |
|----------+-------+------+------+------+------+------+------|
| 1408KB | On | On | On | Off | On | Off | On |
|----------+-------+------+------+------+------+------+------|
| 1536KB | On | On | On | Off | On | Off | Off |
|----------+-------+------+------+------+------+------+------|
| 1664KB | On | On | On | Off | Off | On | On |
|----------+-------+------+------+------+------+------+------|
| 15872KB | Off | Off | Off | Off | On | Off | Off |
|----------+-------+------+------+------+------+------+------|
| 16000KB | Off | Off | Off | Off | Off | On | On |
|----------+-------+------+------+------+------+------+------|
| 16128KB | Off | Off | Off | Off | Off | On | Off |
|----------+-------+------+------+------+------+------+------|
| 16256KB | Off | Off | Off | Off | Off | Off | On |
|----------+-------+------+------+------+------+------+------|
| 16384KB | Off | Off | Off | Off | Off | Off | Off |
|----------+-------+------+------+------+------+------+------|
| Disabled | On | On | On | On | On | On | On |
|------------------------------------------------------------|
| Note: A total of 112 memory address settings are |
| available. The switches are a binary representation of |
| the decimal memory addresses. SW1/1 is the Most |
| Significant Bit and switch SW1/7 is the Least |
| Significant Bit. The switches have the following |
| decimal values: SW1/1=8192, SW1/2=4096, SW1/3=2048, |
| SW1/4=1024, SW1/5=512, SW1/6=256, SW1/7=128. Turn off |
| the switches and add the values of the switches that |
| are off to 128KB obtain the correct starting memory |
| address. (Off=1, On=0) If SW1 is set to Disabled, SW2 |
| should also be set to Disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTE |
|------------------------------------------------------------|
| The board may be configured for any combination of |
| conventional, expanded, and extended memory. When |
| conventional memory is enabled, be sure to subtract |
| 128KB from the remaining memory. When configured for |
| both extended and expanded memory, be sure that the |
| amount of extended memory is a multiple of 4MB. |
+------------------------------------------------------------+