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# ADVANCED LOGIC RESEARCH, INC.
EVOLUTION IV 4/33 ISA VERSION
Processor 80486SX/80487SX/80486DX/80486DX2
Processor 20/25/33/40/50(internal)/66(internal)MHz
Speed
Chip Set Intel
Max. Onboard 52MB
DRAM
Cache None
BIOS Phoenix
Dimensions 356mm x 318mm
I/O Options 32-Bit VESA local bus slots (2), external cache
card slot, floppy drive interface, hard drive
interface, parallel port, PS/2 mouse port, serial
ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| Parallel port | CN1 | Floppy drive | CN5 |
| | | interface | |
|-----------------+----------+--------------------+----------|
| Serial port 1 | CN2 | Hard drive | CN6 |
| | | interface | |
|-----------------+----------+--------------------+----------|
| Serial port 2 | CN3 | 32-bit VESA local | S1 & S2 |
| | | bus slots | |
|-----------------+----------+--------------------+----------|
| PS/2 mouse port | CN4 | External cache | S3 |
| | | card slot | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+------------+-------------+-------------+------------|
| 4MB | (8) 1M x 4 | NONE | NONE | NONE |
|------+------------+-------------+-------------+------------|
| 8MB | (8) 1M x 4 | (1) 1M x 36 | NONE | NONE |
|------+------------+-------------+-------------+------------|
| 12MB | (8) 1M x 4 | (1) 1M x 36 | (1) 1M x 36 | NONE |
|------+------------+-------------+-------------+------------|
| 16MB | (8) 1M x 4 | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x |
| | | | | 36 |
|------+------------+-------------+-------------+------------|
| 20MB | (8) 1M x 4 | (1) 4M x 36 | NONE | NONE |
|------+------------+-------------+-------------+------------|
| 24MB | (8) 1M x 4 | (1) 1M x 36 | (1) 4M x 36 | NONE |
|------+------------+-------------+-------------+------------|
| 36MB | (8) 1M x 4 | (1) 4M x 36 | (1) 4M x 36 | NONE |
|------+------------+-------------+-------------+------------|
| 40MB | (8) 1M x 4 | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x |
| | | | | 36 |
|------+------------+-------------+-------------+------------|
| 52MB | (8) 1M x 4 | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x |
| | | | | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | PS0 | PS1 |
|-------------------+--------------------+-------------------|
| 80486SX | pins 2 & 3 closed | pins 1 & 2 closed |
|-------------------+--------------------+-------------------|
| 80487SX | pins 2 & 3 closed | pins 2 & 3 closed |
|-------------------+--------------------+-------------------|
| 80486DX | pins 1 & 2 closed | pins 2 & 3 closed |
|-------------------+--------------------+-------------------|
| 80486DX2 | pins 1 & 2 closed | pins 2 & 3 closed |
|-------------------+--------------------+-------------------|
| No PGA installed | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | FS0 | FS1 |
|------------------+--------------------+--------------------|
| 20MHz | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 25MHz | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 33MHz | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 40MHz | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 50iMHz | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 66iMHz | pins 1 & 2 closed | pins 2 & 3 closed |
+------------------------------------------------------------+