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# EVEREX SYSTEMS, INC.
RAM 3000 AT EV-135 (VER.2.0)
Card Type Memory card
Chip Set Unidentified
Maximum Onboard Memory 3MB RAM (Type unidentified)
I/O Options None
Data Bus 16-bit ISA
IMG IMG 1
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+------------+------------+------------+------------|
| 256KB | (8) 256K x | None | None | None |
| | 1 | | | |
|--------+------------+------------+------------+------------|
| 512KB | (8) 256K x | (8) 256K x | None | None |
| | 1 | 1 | | |
|--------+------------+------------+------------+------------|
| 768KB | (8) 256K x | (8) 256K x | (8) 256K x | None |
| | 1 | 1 | 1 | |
|--------+------------+------------+------------+------------|
| 1024KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 1280KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 1536KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 1792KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 2048KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 2304KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 2560KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 2816KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 3072KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 4 | Bank 5 | Bank 6 | Bank 7 |
|--------+------------+------------+------------+------------|
| 256KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 512KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 768KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 1024KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 1280KB | (8) 256K x | None | None | None |
| | 1 | | | |
|--------+------------+------------+------------+------------|
| 1536KB | (8) 256K x | (8) 256K x | None | None |
| | 1 | 1 | | |
|--------+------------+------------+------------+------------|
| 1792KB | (8) 256K x | (8) 256K x | (8) 256K x | None |
| | 1 | 1 | 1 | |
|--------+------------+------------+------------+------------|
| 2048KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 2304KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 2560KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 2816KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
|--------+------------+------------+------------+------------|
| 3072KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 8 | Bank 9 | Bank 10 | Bank 11 |
|--------+------------+------------+------------+------------|
| 256KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 512KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 768KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 1024KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 1280KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 1536KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 1792KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 2048KB | None | None | None | None |
|--------+------------+------------+------------+------------|
| 2304KB | (8) 256K x | None | None | None |
| | 1 | | | |
|--------+------------+------------+------------+------------|
| 2560KB | (8) 256K x | (8) 256K x | None | None |
| | 1 | 1 | | |
|--------+------------+------------+------------+------------|
| 2816KB | (8) 256K x | (8) 256K x | (8) 256K x | None |
| | 1 | 1 | 1 | |
|--------+------------+------------+------------+------------|
| 3072KB | (8) 256K x | (8) 256K x | (8) 256K x | (8) 256K x |
| | 1 | 1 | 1 | 1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size |SW1/1 |SW1/2 |SW1/3 |SW1/4 |SW1/5 |SW1/6 |SW1/7|SW1/8|
|------+------+------+------+------+------+------+-----+-----|
| 0KB | On | On | On | Off | On | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|128KB | Off | On | On | Off | On | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|256KB | On | Off | On | Off | On | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|384KB | Off | Off | On | Off | On | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|512KB | On | On | Off | Off | On | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|640KB | Off | On | Off | Off | On | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|768KB | On | Off | Off | Off | On | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|896KB | Off | Off | Off | Off | On | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|1024KB| On | On | On | On | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|1152KB| Off | On | On | On | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|1280KB| On | Off | On | On | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|1408KB| Off | Off | On | On | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|1536KB| On | On | Off | On | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|1664KB| Off | On | Off | On | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|1792KB| On | Off | Off | On | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|1920KB| Off | Off | Off | On | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|2048KB| On | On | On | Off | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|2176KB| Off | On | On | Off | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|2304KB| On | Off | On | Off | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|2432KB| Off | Off | On | Off | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|2560KB| On | On | Off | Off | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|2688KB| Off | On | Off | Off | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|2816KB| On | Off | Off | Off | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|2944KB| Off | Off | Off | Off | Off | On | On | On |
|------+------+------+------+------+------+------+-----+-----|
|3072KB| On | On | On | On | On | Off | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE MEMORY JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP2 | JP3 |
|---------------+------------------------+-------------------|
| None | Pins 3 & 4, 5 & 6 | Pins 3 & 4 closed |
| | closed | |
|---------------+------------------------+-------------------|
| 256KB - 512KB | Pins 3 & 4, 7 & 8 | Pins 3 & 4 closed |
| | closed | |
|---------------+------------------------+-------------------|
| 256KB - 640KB | Pins 1 & 2, 5 & 6 | Pins 1 & 2 closed |
| | closed | |
|---------------+------------------------+-------------------|
| 512KB - 640KB | Pins 1 & 2, 5 & 6 | Pins 1 & 2 closed |
| | closed | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BASE MEMORY SWITCH CONFIGURATION |
|------------------------------------------------------------|
| Size | Chips | SW2/6 | SW2/7 | SW2/8 |
|---------------+-----------+----------+----------+----------|
| None | N/A | Off | Off | Off |
|---------------+-----------+----------+----------+----------|
| 256KB - 512KB | 64KB | Off | On | On |
|---------------+-----------+----------+----------+----------|
| 256KB - 512KB | 256KB | N/A | N/A | N/A |
|---------------+-----------+----------+----------+----------|
| 256KB - 640KB | 64KB | On | On | On |
|---------------+-----------+----------+----------+----------|
| 256KB - 640KB | 256KB | On | On | Off |
|---------------+-----------+----------+----------+----------|
| 512KB - 640KB | 64KB | On | Off | On |
|---------------+-----------+----------+----------+----------|
| 512KB - 640KB | 256KB | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| EXTENDED MEMORY ADDRESS SETTINGS |
|------------------------------------------------------------|
| Address | Chips | SW2/1 | SW2/2 | SW2/3 | SW2/4 | SW2/5 |
|---------+--------+--------+--------+-------+-------+-------|
| 128KB | 64 | Off | On | On | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 256KB | 64 | On | Off | On | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 384KB | 64 | Off | Off | On | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 512KB | 64 | On | On | Off | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 512KB | 256 | On | On | Off | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 640KB | 64 | Off | On | Off | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 768KB | 64 | On | Off | Off | On | On |
|---------+--------+--------+--------+-------+-------+-------|
| 1MB | 256 | On | On | On | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| 1.5MB | 256 | On | On | Off | Off | On |
|---------+--------+--------+--------+-------+-------+-------|
| 2MB | 256 | On | On | On | On | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 2.5MB | 256 | On | On | Off | On | Off |
|---------+--------+--------+--------+-------+-------+-------|
| 3MB | 256 | On | On | On | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| MISCELLANEOUS TECHNICAL NOTES |
|------------------------------------------------------------|
| Note: The purpose of W16 is unidentified. |
+------------------------------------------------------------+