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# TECHMEDIA COMPUTER SYSTEMS CORPORATION
TMB-I430VX-ATX
Processor CX M1/AM K5/Pentium
Processor Speed 75/90/100/120/133/150/166/180/200MHz
Chip Set Intel
Video Chip Set S3
Maximum Onboard 128MB (EDO supported)
Memory
Maximum Video 2MB
Memory
Cache 256/512KB
BIOS Award
Dimensions 280mm x 224mm
I/O Options 32-bit PCI slots (3), floppy drive interface,
green PC connector, IDE interfaces (2),
parallel port, PS/2 mouse port, PS/2 mouse
interface, serial ports (2), VGA port, cache
slot, IR connector, USB connector, ATX power
connector
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| ATX power supply | ATX | Chassis fan | JFAN |
| | | power | |
|-------------------+----------+------------------+----------|
| IDE interface LED | C1 | Soft off power | JPATX1 |
| | | supply | |
|-------------------+----------+------------------+----------|
| Green PC | C2 | IDE interface 1 | JHDD1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Reset switch | C3 | IDE interface 2 | JHDD2 |
|-------------------+----------+------------------+----------|
| Speaker | C4 | IR connector | JP17A |
|-------------------+----------+------------------+----------|
| Power LED & | C5 | PS/2 mouse | JM1 |
| keylock | | interface | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN2A | PS/2 mouse port | MS1 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN3A | VGA port | O4 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN4A | 32-bit PCI slots | PC1 – |
| | | | PC3 |
|-------------------+----------+------------------+----------|
| Parallel port | CN6A | Cache slot | SL1 |
|-------------------+----------+------------------+----------|
| Green PC LED | J4 | USB connector | USB1 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J14 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J15 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J18 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J1V | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J2V | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP8A | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP9A | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP14A | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP15A | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | JP16A | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | CMOS memory normal operation | JRTC1 | Open |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | JRTC1 | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 8MB | (2) 1M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 8MB | None | None | (1) 1M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | None | None | (1) 2M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 16MB | (2) 1M x 36 | (2) 1M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 24MB | (2) 1M x 36 | (2) 2M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 24MB | (2) 2M x 36 | None | None | (1) 1M x |
| | | | | 64 |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 4M x 36 | None | None | None |
|------+-------------+-------------+------------+------------|
| 32MB | None | None | (1) 4M x | None |
| | | | 64 | |
|------+-------------+-------------+------------+------------|
| 32MB | None | None | (1) 2M x | (1) 2M x |
| | | | 64 | 64 |
|------+-------------+-------------+------------+------------|
| 32MB | (2) 2M x 36 | (2) 2M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 1M x 36 | (2) 4M x 36 | None | None |
|------+-------------+-------------+------------+------------|
| 40MB | (2) 4M x 36 | None | None | (1) 1M x |
| | | | | 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM/DRAM CONFIGURATION (CON’T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|---------+---------------+-----------+-----------+----------|
| 48MB | (2) 2M x 36 | (2) 4M x | None | None |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 48MB | (2) 2M x 36 | None | (1) 4M x | None |
| | | | 64 | |
|---------+---------------+-----------+-----------+----------|
| 64MB | (2) 8M x 36 | None | None | None |
|---------+---------------+-----------+-----------+----------|
| 64MB | None | None | None | (1) 8M x |
| | | | | 64 |
|---------+---------------+-----------+-----------+----------|
| 64MB | (2) 4M x 36 | (2) 4M x | None | None |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 64MB | None | None | (1) 4M x | (1) 4M x |
| | | | 64 | 64 |
|---------+---------------+-----------+-----------+----------|
| 72MB | (2) 8M x 36 | (2) 1M x | None | None |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 72MB | (2) 8M x 36 | None | None | (1) 1M x |
| | | | | 64 |
|---------+---------------+-----------+-----------+----------|
| 80MB | (2) 2M x 36 | None | None | (1) 8M x |
| | | | | 64 |
|---------+---------------+-----------+-----------+----------|
| 80MB | (2) 8M x 36 | (2) 2M x | None | None |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 80MB | (2) 8M x 36 | None | None | (1) 2M x |
| | | | | 64 |
|---------+---------------+-----------+-----------+----------|
| 96MB | (2) 8M x 36 | (2) 4M x | None | None |
| | | 36 | | |
|---------+---------------+-----------+-----------+----------|
| 96MB | (2) 4M x 36 | None | None | (1) 8M x |
| | | | | 64 |
|---------+---------------+-----------+-----------+----------|
| 96MB | (2) 8M x 36 | None | None | (1) 4M x |
| | | | | 64 |
|---------+---------------+-----------+-----------+----------|
| 128MB | (2) 8M x 36 | (2) 8M x | None | None |
| | | 36 | | |
|------------------------------------------------------------|
| Note: Board accepts EDO memory. Banks 0 & 1, 2 & 3 are |
| interchangeable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Voltage | J11 | J12 | J13 |
|---------+----------------+----------------+----------------|
| 3.3v | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|---------+----------------+----------------+----------------|
| 5v | Pins 3 & 4 | Pins 3 & 4 | Pins 3 & 4 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | SL1 |
|----------------+------------------+------------------------|
| 256KB (A) | (2) 32K x 32 | Not installed |
|----------------+------------------+------------------------|
| 256KB (B) | (2) 32K x 32 | 256KB module installed |
|----------------+------------------+------------------------|
| 512KB | (2) 64K x 32 | Not installed |
|------------------------------------------------------------|
| Note: The location of bank 0 is unidentified. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | J14K | J15K |
|------------------+--------------------+--------------------|
| 256KB (A) | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 256KB (B) | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 512KB | Pins 2 & 3 closed | Pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VIDEO MEMORY CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (2) 256K x 16 | None |
|------------------+--------------------+--------------------|
| 2MB | (2) 256K x 16 | (2) 256K x 16 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 50MHz | 1.5x | Off | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 1.5x | On | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 1.5x | On | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (CYRIX, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 50MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2x | Off | On | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 75MHz | 50MHz | 1.5x | Off | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | On | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | On | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (AMD, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 75MHz | 50MHz | 1.5x | On | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | On | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | On | Off | On | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/1 |SW1/2 |SW1/3 |SW1/4 |
|---------+-----------+----------+------+------+------+------|
| 75MHz | 50MHz | 1.5x | Off | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | On | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | On | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 60MHz | 2x | On | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 2x | On | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2.5x | On | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | On | Off | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 180MHz | 60MHz | 3x | On | On | Off | Off |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x | On | Off | Off | Off |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION (INTEL, CON’T) |
|------------------------------------------------------------|
|CPU speed|Clock speed|Multiplier|SW1/5 |SW1/6 |SW1/7 |SW1/8 |
|---------+-----------+----------+------+------+------+------|
| 75MHz | 50MHz | 1.5x | On | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 90MHz | 60MHz | 1.5x | On | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 100MHz | 66MHz | 1.5x | On | Off | On | Off |
|---------+-----------+----------+------+------+------+------|
| 120MHz | 60MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 133MHz | 66MHz | 2x | Off | On | On | Off |
|---------+-----------+----------+------+------+------+------|
| 150MHz | 60MHz | 2.5x | Off | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 166MHz | 66MHz | 2.5x | Off | On | Off | On |
|---------+-----------+----------+------+------+------+------|
| 180MHz | 60MHz | 3x | On | Off | Off | On |
|---------+-----------+----------+------+------+------+------|
| 200MHz | 66MHz | 3x | On | Off | Off | On |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | V core | J16 | J17 | JB3P1 |
|---------+--------+--------+--------+-----------------------|
| 3v | 2.8v | Closed | Closed | Open |
|---------+--------+--------+--------+-----------------------|
| 3.3v | 3.3v | Open | Open | 1 & 2, 3 & 3, 5 & 6, |
| | | | | 7 & 8 |
+------------------------------------------------------------+