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# TMC RESEARCH CORPORATION
AI5TT (VER. 1.0)
Processor CX 6X86/AM K5/AM K6/Pentium
Processor Speed 90/100/120/133/150/166/200/233MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 256MB (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Award
Dimensions 254mm x 218mm
I/O Options 32-bit PCI slots (4), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse interface, serial
ports (2), IR connector, USB connectors (2),
ATX power connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+------------+----------------+------------|
| ATX power | ATX | Turbo LED | J12/pins 8 |
| connector | | | & 18 |
|-----------------+------------+----------------+------------|
| Serial port 1 | J5 | Reset switch | J12/pins 9 |
| | | | & 19 |
|-----------------+------------+----------------+------------|
| Serial port 2 | J6 | IDE interface | J12/pins |
| | | LED | 10 & 20 |
|-----------------+------------+----------------+------------|
| Floppy drive | J7 | Power LED & | J12/pins |
| interface | | keylock | 11 & 15 |
|-----------------+------------+----------------+------------|
| IDE interface 1 | J8 | PS/2 mouse | J16 |
| | | interface | |
|-----------------+------------+----------------+------------|
| Parallel port | J9 | USB connector | JP1 |
|-----------------+------------+----------------+------------|
| IDE interface 2 | J10 | USB connector | JP2 |
|-----------------+------------+----------------+------------|
| IR connector | J11 | External | JP8 |
| | | battery | |
|-----------------+------------+----------------+------------|
| Speaker | J12/pins 1 | 32-bit PCI | PC1 – PC4 |
| | & 4 | slots | |
|-----------------+------------+----------------+------------|
| Green PC | J12/pins 6 | | |
| connector | & 16 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | JP4 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Battery type select internal | JP8 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Battery type select external | JP8 | Closed |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JP11 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JP11 | Closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP16 | Open |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (2) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (2) 4M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (2) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (2) 4M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (2) 8M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (2) 16M x 36 | (2) 16M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 2 | Bank 3 |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 1M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 24MB | (1) 2M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 2M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 40MB | (1) 4M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 48MB | (1) 4M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 4M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 72MB | (1) 8M x 64 | (1) 1M x 64 |
|------------------+--------------------+--------------------|
| 80MB | (1) 8M x 64 | (1) 2M x 64 |
|------------------+--------------------+--------------------|
| 96MB | (1) 8M x 64 | (1) 4M x 64 |
|------------------+--------------------+--------------------|
| 128MB | (1) 8M x 64 | (1) 8M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 |
|----------------------------+-------------------------------|
| 256KB | (2) 32K x 32 |
|----------------------------+-------------------------------|
| 512KB | (2) 64K x 32 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX 6X86) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2x | On | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2x | Off | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K5) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 1.5x | Off | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 1.75x | Off | Off | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AM K6) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 1.75x | Off | Off | On | On |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x | Off | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | On | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | Off | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 60MHz | 2x | On | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 2x | Off | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2.5x | On | On | On | On |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | Off | Off | On | On |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x | Off | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 233MHz | 66MHz | 3.5x | Off | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (SINGLE) |
|------------------------------------------------------------|
| Voltage | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
|------------+-----------+-----------+-----------+-----------|
| 3.5v | On | On | On | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION (DUAL) |
|------------------------------------------------------------|
| Voltage | V core | SW1/5 | SW1/6 | SW1/7 | SW1/8 |
|----------+----------+---------+---------+---------+--------|
| 3.3v | 2.5v | On | Off | On | Off |
|----------+----------+---------+---------+---------+--------|
| 3.3v | 2.6v | Off | On | On | Off |
|----------+----------+---------+---------+---------+--------|
| 3.3v | 2.7v | On | On | On | Off |
|----------+----------+---------+---------+---------+--------|
| 3.3v | 2.8v | Off | Off | Off | On |
|----------+----------+---------+---------+---------+--------|
| 3.3v | 2.9v | On | Off | Off | On |
|----------+----------+---------+---------+---------+--------|
| 3.3v | 3.0v | Off | On | Off | On |
|----------+----------+---------+---------+---------+--------|
| 3.3v | 3.2v | Off | Off | On | On |
|----------+----------+---------+---------+---------+--------|
| 3.3v | 3.5v | On | On | On | On |
+------------------------------------------------------------+