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# MONOLITHIC SYSTEMS, INC. (COLORADO MSI)
JUSTRAM/ATZ
Card Type Memory
Maximum Onboard Memory 8MB DRAM
Data Bus 16-bit ISA
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Function | Label | Function | Label |
|-------------------------+-------+------------------+-------|
| Daughterboard header | CN1A | Header to main | CN2B |
| | | board (on back) | |
|-------------------------+-------+------------------+-------|
| Header to main board | CN1B | Daughterboard | CN3A |
| (on back) | | header | |
|-------------------------+-------+------------------+-------|
| Daughterboard header | CN2A | Header to main | CN3B |
| | | board (on back) | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Setting | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | E1 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Normal address timing | JP5 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | 20ns delay for non-compatible | JP5 | Pins 2 & 3 |
| | machines | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP8 | Pins 2 & 3 |
| | alter | | closed |
|---+---------------------------------+-------+--------------|
| » | Zero wait states enabled | JP13 | Closed |
|---+---------------------------------+-------+--------------|
| | Zero wait states disabled | JP13 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM |
|------------------------------------------------------------|
| Setting | Bank 0 | P0 | Bank 1 | P1 |
|---------+------------+-----------+------------+------------|
| 2MB | (16) 1M x | (2) 1M x | None | None |
| | 1 | 1 | | |
|---------+------------+-----------+------------+------------|
| 4MB | (16) 1M x | (2) 1M x | (16) 1M x | (2) 1M x 1 |
| | 1 | 1 | 1 | |
|---------+------------+-----------+------------+------------|
| 6MB | (16) 1M x | (2) 1M x | (16) 1M x | (2) 1M x 1 |
| | 1 | 1 | 1 | |
|---------+------------+-----------+------------+------------|
| 8MB | (16) 1M x | (2) 1M x | (16) 1M x | (2) 1M x 1 |
| | 1 | 1 | 1 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM (CON’T) |
|------------------------------------------------------------|
| Setting | Bank 2 | P2 | Bank 3 | P3 |
|---------+------------+------------+------------+-----------|
| 2MB | None | None | None | None |
|---------+------------+------------+------------+-----------|
| 4MB | None | None | None | None |
|---------+------------+------------+------------+-----------|
| 6MB | (16) 1M x | (2) 1M x 1 | None | None |
| | 1 | | | |
|---------+------------+------------+------------+-----------|
| 8MB | (16) 1M x | (2) 1M x 1 | (16) 1M x | (2) 1M x |
| | 1 | | 1 | 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CONVENTIONAL MEMORY |
|------------------------------------------------------------|
| Setting | SW1/7 | SW1/8 |
|--------------------------------------------+-------+-------|
| » | All memory on board used for extended | Off | Off |
| | or expanded memory | | |
|---+----------------------------------------+-------+-------|
| | First 128KB on board used for | On | On |
| | conventional memory above 512KB | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXPANDED MEMORY BASE I/O ADDRESSES |
|------------------------------------------------------------|
| Main Board | Daughter Board | SW1/1 | SW1/2 | SW1/3 |
|------------+----------------+----------+---------+---------|
| 208h | 218h | On | On | On |
|------------+----------------+----------+---------+---------|
| 228h | 238h | On | On | Off |
|------------+----------------+----------+---------+---------|
| 248h | 258h | On | Off | On |
|------------+----------------+----------+---------+---------|
| 268h | 278h | On | Off | Off |
|------------+----------------+----------+---------+---------|
| 288h | 298h | Off | On | On |
|------------+----------------+----------+---------+---------|
| 2A8h | 2B8h | Off | On | Off |
|------------+----------------+----------+---------+---------|
| 2C8h | 2D8h | Off | Off | On |
|------------+----------------+----------+---------+---------|
| 2E8h | 2F8h | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED MEMORY SIZE |
|------------------------------------------------------------|
| Setting | SW1/5 | SW1/6 |
|--------------------+-------------------+-------------------|
| 0MB | N/A | N/A |
|--------------------+-------------------+-------------------|
| 2MB | On | On |
|--------------------+-------------------+-------------------|
| 4MB | On | Off |
|--------------------+-------------------+-------------------|
| 6MB | Off | Off |
|--------------------+-------------------+-------------------|
| 8MB | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED MEMORY STARTING ADDRESS |
|------------------------------------------------------------|
|Setting |SW2/1 |SW2/2 |SW2/3 |SW2/4 |SW2/5|SW2/6|SW2/7|SW2/8|
|--------+------+------+------+------+-----+-----+-----+-----|
| 1024KB | On | On | On | Off | On | On | On | On |
|--------+------+------+------+------+-----+-----+-----+-----|
| 1152KB | On | On | On | Off | On | On | Off | On |
|--------+------+------+------+------+-----+-----+-----+-----|
| 1280KB | On | On | On | Off | On | Off | On | On |
|--------+------+------+------+------+-----+-----+-----+-----|
| 1408KB | On | On | On | Off | On | Off | Off | On |
|--------+------+------+------+------+-----+-----+-----+-----|
| 1536KB | On | On | On | Off | Off | On | On | On |
|--------+------+------+------+------+-----+-----+-----+-----|
|15744KB | Off | Off | Off | Off | On | Off | Off | On |
|--------+------+------+------+------+-----+-----+-----+-----|
|15872KB | Off | Off | Off | Off | Off | On | On | On |
|--------+------+------+------+------+-----+-----+-----+-----|
|16000KB | Off | Off | Off | Off | Off | On | Off | On |
|--------+------+------+------+------+-----+-----+-----+-----|
|16128KB | Off | Off | Off | Off | Off | Off | On | On |
|--------+------+------+------+------+-----+-----+-----+-----|
|16256KB | Off | Off | Off | Off | Off | Off | Off | On |
|--------+------+------+------+------+-----+-----+-----+-----|
|Disabled| Off | 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). SW2/8 does not affect the address, but |
| enables or disabled extended memory. If SW2 is set to |
| Disabled, SW3 should also be set to Disabled. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED MEMORY ENDING ADDRESS |
|------------------------------------------------------------|
|Setting |SW3/1 |SW3/2 |SW3/3 |SW3/4 |SW3/5|SW3/6|SW3/7|SW3/8|
|--------+------+------+------+------+-----+-----+-----+-----|
| 1152KB | On | On | On | Off | On | On | On | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
| 1280KB | On | On | On | Off | On | On | Off | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
| 1408KB | On | On | On | Off | On | Off | On | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
| 1536KB | On | On | On | Off | On | Off | Off | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
| 1664KB | On | On | On | Off | Off | On | On | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
|15872KB | Off | Off | Off | Off | On | Off | Off | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
|16000KB | Off | Off | Off | Off | Off | On | On | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
|16128KB | Off | Off | Off | Off | Off | On | Off | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
|16256KB | Off | Off | Off | Off | Off | Off | On | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
|16384KB | Off | Off | Off | Off | Off | Off | Off | Off |
|--------+------+------+------+------+-----+-----+-----+-----|
|Disabled| On | 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. SW3/1 is the Most |
| Significant Bit and switch SW3/7 is the Least |
| Significant Bit. The switches have the following |
| decimal values: SW3/1=8192, SW3/2=4096, SW3/3=2048, |
| SW3/4=1024, SW3/5=512, SW3/6=256, SW3/7=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). SW3/8 does not affect the |
| address, but enables or disabled extended memory. If |
| SW3 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, the memory on the |
| main board will act as the extended memory, and the |
| memory on the daughter board will be the expanded |
| memory. |
+------------------------------------------------------------+