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# TMC RESERCH CORPORATION
AI5TH (VER. 1.0)
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Intel
Video Chip Set None
Maximum Onboard 128MB DRAM (EDO supported)
Memory
Maximum Video None
Memory
Cache 256/512KB
BIOS Unidentified
Dimensions 330mm 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), cache slot, IR connectors (2), VRM
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|------------------+----------+------------------+-----------|
| PS/2 mouse | J5 | Speaker | J20 pins |
| interface | | | 1 - 4 |
|------------------+----------+------------------+-----------|
| IR connector | J6 | Green PC | J20 pins |
| | | connector | 6 & 16 |
|------------------+----------+------------------+-----------|
| Serial port 1 | J7 | Turbo LED | J20 pins |
| | | | 8 & 18 |
|------------------+----------+------------------+-----------|
| IR connector | J8 | Reset switch | J20 pins |
| | | | 9 & 19 |
|------------------+----------+------------------+-----------|
| Serial port 2 | J9 | IDE interface | J20 pins |
| | | LED | 10 & 20 |
|------------------+----------+------------------+-----------|
| Floppy drive | J12 | Power LED & | J20 pins |
| interface | | keylock | 11 - 15 |
|------------------+----------+------------------+-----------|
| Parallel port | J13 | 32-bit PCI slots | PC1 - PC4 |
|------------------+----------+------------------+-----------|
| IDE interface 1 | J15 | Cache slot | SL1 |
|------------------+----------+------------------+-----------|
| IDE interface 2 | J16 | VRM connector | VRM |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-----------------------------------+-------+----------------|
| » | Flash BIOS voltage select 5v | JP7 | Pins 2 & 3 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| | Flash BIOS voltage select 12v | JP7 | Pins 1 & 2 |
| | | | closed |
|---+-------------------------------+-------+----------------|
| » | AT bus clock select PCICLK/4 | JP13 | Closed |
|---+-------------------------------+-------+----------------|
| | AT bus clock select PCICLK/3 | JP13 | Open |
|---+-------------------------------+-------+----------------|
| » | CMOS memory normal operation | JP17 | Open |
|---+-------------------------------+-------+----------------|
| | CMOS memory clear | JP17 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 8MB | None | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 8MB | (2) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | None | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (2) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 2M x 36 | (2) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | None | (2) 4M 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 |
|------------------+--------------------+--------------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 4M x 36 | (2) 2M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (2) 2M x 36 | (2) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | None | (2) 8M 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 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|---------------+-----------------------+--------------------|
| 72MB | (2) 1M x 36 | (2) 8M x 36 |
|---------------+-----------------------+--------------------|
| 80MB | (2) 8M x 36 | (2) 2M x 36 |
|---------------+-----------------------+--------------------|
| 80MB | (2) 2M x 36 | (2) 8M x 36 |
|---------------+-----------------------+--------------------|
| 96MB | (2) 8M x 36 | (2) 4M x 36 |
|---------------+-----------------------+--------------------|
| 96MB | (2) 4M x 36 | (2) 8M x 36 |
|---------------+-----------------------+--------------------|
| 128MB | (2) 8M x 36 | (2) 8M x 36 |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Board also accepts x 32 |
| SIMMs. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG | SL1 |
|-----------+----------+---------+--------------+------------|
| 256KB (A) | (2) 32K | None | Unidentified | Not |
| | x 32 | | | installed |
|-----------+----------+---------+--------------+------------|
| 256KB (B) | None | None | None | Installed |
|-----------+----------+---------+--------------+------------|
| 512KB (A) | (2) 32K | (2) 32K | Unidentified | Not |
| | x 32 | x 32 | | installed |
|-----------+----------+---------+--------------+------------|
| 512KB (B) | (2) 64K | None | Unidentified | Not |
| | x 32 | | | installed |
|-----------+----------+---------+--------------+------------|
| 512KB (C) | None | None | None | Installed |
|------------------------------------------------------------|
| Note: The location of Banks 0 & 1 are unidentified. The |
| TAG chip sizes are unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP21 | JP22 |
|--------------------+-------------------+-------------------|
| None | Open | Open |
|--------------------+-------------------+-------------------|
| 256KB (A, B) | Closed | Open |
|--------------------+-------------------+-------------------|
| 512KB (A, B, C) | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE BANK CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP23 | JP24 |
|--------------------+-------------------+-------------------|
| 1 bank | Open | Open |
|--------------------+-------------------+-------------------|
| 2 banks | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
| Speed | JP8 | JP9 | JP10 | JP11 | JP12 |
|----------+----------+----------+---------+---------+-------|
| 120MHz | Closed | Closed | Closed | Closed | Open |
|----------+----------+----------+---------+---------+-------|
| 150MHz | Closed | Open | Closed | Closed | Open |
|----------+----------+----------+---------+---------+-------|
| 166MHz | Open | Closed | Open | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
| Speed | JP8 | JP9 | JP10 | JP11 | JP12 |
|----------+----------+----------+----------+--------+-------|
| 75MHz | Closed | Closed | Closed | Open | Open |
|----------+----------+----------+----------+--------+-------|
| 90MHz | Closed | Open | Closed | Open | Open |
|----------+----------+----------+----------+--------+-------|
| 100MHz | Open | Closed | Open | Open | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
| Speed | JP8 | JP9 | JP10 | JP11 | JP12 |
|----------+---------+---------+---------+---------+---------|
| 75MHz | Closed | Closed | Closed | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 90MHz | Closed | Open | Closed | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 100MHz | Open | Closed | Open | Open | Open |
|----------+---------+---------+---------+---------+---------|
| 120MHz | Closed | Open | Closed | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 133MHz | Open | Closed | Open | Closed | Open |
|----------+---------+---------+---------+---------+---------|
| 150MHz | Closed | Open | Closed | Closed | Closed |
|----------+---------+---------+---------+---------+---------|
| 166MHz | Open | Closed | Open | Closed | Closed |
|----------+---------+---------+---------+---------+---------|
| 180MHz | Closed | Open | Closed | Open | Closed |
|----------+---------+---------+---------+---------+---------|
| 200MHz | Open | Closed | Open | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | JP19 |
|-------------------------------+----------------------------|
| Standard CPU | Closed |
|-------------------------------+----------------------------|
| VRE CPU | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | JP3 | JP4 |
|------------------+--------------------+--------------------|
| | 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|----+-------------+--------------------+--------------------|
| » | 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT SELECTION |
|------------------------------------------------------------|
| Setting | JP1 | JP2 |
|----------------------------------+------------+------------|
| » | Serial port 2 set as serial | Pins 1 & 2 | Pins 1 & 2 |
| | port | closed | closed |
|---+------------------------------+------------+------------|
| | IR connector | Pins 2 & 3 | Pins 2 & 3 |
| | | closed | closed |
+------------------------------------------------------------+