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# FIRST INTERNATIONAL COMPUTER, INC.
486-GIO-VT2
Processor CX486S/80486SX/CX486DX/AM486DX/AM486DXL/80486DX/80486DX2/
80486DX4/P4S/P23S/P24C/P24CT/P24D/P24S/Pentium Overdrive
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)MHz
Speed
Chip Set VIA
Max. 64MB
Onboard
DRAM
Cache 64/128/256KB
BIOS Award
Dimensions 254mm x 218mm
I/O 32-bit VESA local bus slots (2), floppy drive interface, game port,
Options green PC connector, IDE interfaces (2), parallel port, PS/2 mouse
port, serial ports (2)
NPU None
Options
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| PS/2 mouse | CN1 | Turbo switch | J12 |
| interface | | | |
|-------------------+----------+------------------+----------|
| Game interface | CN2 | Turbo LED | J13 |
|-------------------+----------+------------------+----------|
| PS/2 mouse port | CN4 | Reset switch | J14 |
|-------------------+----------+------------------+----------|
| Serial port 2 | CN7 | Speaker | J15 |
|-------------------+----------+------------------+----------|
| Serial port 1 | CN8 | Power LED & | J16 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| Floppy drive | CN9 | Green PC | J17 |
| interface | | connector | |
|-------------------+----------+------------------+----------|
| Parallel port | CN10 | Green PC | J23 |
| | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface | CN11 | Green PC | J24 |
| (primary) | | connector | |
|-------------------+----------+------------------+----------|
| IDE interface | CN12 | IDE interface | J25 |
| (secondary) | | LED (secondary) | |
|-------------------+----------+------------------+----------|
| External battery | J1 | 32-bit VESA | SL1 & |
| | | local bus slots | SL2 |
|-------------------+----------+------------------+----------|
| IDE interface LED | J8 | | |
| (primary) | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Monitor type select | J2 | Open |
| | monochrome/EGA/VGA | | |
|---+----------------------------------+--------+------------|
| | Monitor type select color | J2 | Closed |
|---+----------------------------------+--------+------------|
| » | Battery type select internal | J3 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Battery type select external | J3 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | VESA IDE interface enabled | J4 | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | VESA IDE interface disabled | J4 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | CMOS memory normal operation | J7 | Open |
|---+----------------------------------+--------+------------|
| | CMOS memory clear | J7 | Closed |
|---+----------------------------------+--------+------------|
| » | Local HDD_BALE disabled | J9 | Open |
|---+----------------------------------+--------+------------|
| | Local HDD_BALE enabled | J9 | Closed |
|---+----------------------------------+--------+------------|
| » | Local HDD_IOCHRDY disabled | J10 | Open |
|---+----------------------------------+--------+------------|
| | Local HDD_ IOCHRDY enabled | J10 | Closed |
|---+----------------------------------+--------+------------|
| » | ISA HDD_BALE disabled | J26 | Open |
|---+----------------------------------+--------+------------|
| | ISA HDD_BALE enabled | J26 | Closed |
|---+----------------------------------+--------+------------|
| » | ISA HDD_IOCHRDY disabled | J27 | Open |
|---+----------------------------------+--------+------------|
| | ISA HDD_ IOCHRDY enabled | J27 | Closed |
|---+----------------------------------+--------+------------|
| » | AM486DXL2 speed select 2x | J30 | Closed |
|---+----------------------------------+--------+------------|
| | AM486DXL2 speed select 3x | J30 | Open |
|---+----------------------------------+--------+------------|
| » | Game port enabled | J31 | Closed |
|---+----------------------------------+--------+------------|
| | Game port disabled | J31 | Open |
|---+----------------------------------+--------+------------|
| » | CPU type select Intel SL and all | JCX2 | pins 1 & 2 |
| | others | | closed |
|---+----------------------------------+--------+------------|
| | CX486S/DX P24D | JCX2 | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP1 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JP2 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | Cache type select write through | JT1 | Open |
|---+----------------------------------+--------+------------|
| | Cache type select write back | JT1 | Closed |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JW1 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JW2 | N/A |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Factory configured - do not | JX1 | pins 2 & 3 |
| | alter | | closed |
|---+----------------------------------+--------+------------|
| » | IDE interface enabled | JG | pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS (CON’T) |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| | IDE interface disabled | JG | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Floppy drive interface enabled | JH | pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Floppy drive interface disabled | JH | pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | Parallel port unidirectional | JI | Closed |
| | (printer) | | |
|---+----------------------------------+--------+------------|
| | Parallel port bidirectional | JI | Open |
|------------------------------------------------------------|
| Note: The location of jumpers JP1, JP2 & JX1 are |
| unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 1MB | (1) 256K x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 2MB | (1) 256K x | (1) 256K x | NONE | NONE |
| | 36 | 36 | | |
|------+-------------+-------------+------------+------------|
| 3MB | (1) 256K x | (1) 256K x | (1) 256K x | NONE |
| | 36 | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 256K x | (1) 256K x | (1) 256K x | (1) 256K x |
| | 36 | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 5MB | (1) 1M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 6MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 7MB | (1) 1M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 12MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 12MB | NONE | (1) 1M x 36 | (1) 2M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 12MB | NONE | NONE | (1) 1M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 4M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 16MB | NONE | (1) 1M x 36 | (1) 2M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 16MB | NONE | NONE | (1) 2M x | (1) 2M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 17MB | (1) 4M x 36 | (1) 256K x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 18MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 19MB | (1) 4M x 36 | (1) 256K x | (1) 256K x | (1) 256K x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 21MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 22MB | (1) 4M x 36 | (1) 1M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | NONE | NONE | (1) 8M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 33MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 34MB | (1) 4M x 36 | (1) 4M x 36 | (1) 256K x | (1) 256K x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 48MB | NONE | (1) 4M x 36 | (1) 8M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 48MB | NONE | NONE | (1) 4M x | (1) 8M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | NONE | (1) 4M x 36 | (1) 8M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | NONE | NONE | (1) 8M x | (1) 8M x |
| | | | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | TAG |
|------------+---------------+---------------+---------------|
| 64KB | (4) 8K x 8 | (4) 8K x 8 | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 128KB | (4) 32K x 8 | NONE | (1) 8K x 8 |
|------------+---------------+---------------+---------------|
| 256KB | (4) 32K x 8 | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JS1 | JS2 | JS3 |
|-------+-----------------+-----------------+----------------|
| 64KB | pins 1 & 2 | pins 1 & 2 | pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 128KB | pins 1 & 2 | pins 2 & 3 | pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 256KB | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JC1 | JC2 | JC3 | JC4 |
|------------+------------+------------+--------+------------|
| CX486S | pins 2 & 3 | pins 2 & 3 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| 80486SX | pins 2 & 3 | pins 2 & 3 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| CX486DX | pins 1 & 2 | pins 1 & 2 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| AM486DX | pins 1 & 2 | pins 1 & 2 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| 80486DX | pins 1 & 2 | pins 1 & 2 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| 80486DX2 | pins 1 & 2 | pins 1 & 2 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| P4S | pins 1 & 2 | pins 1 & 2 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| P23S | pins 2 & 3 | pins 2 & 3 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| P24C | pins 1 & 2 | pins 1 & 2 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| P24CT | pins 1 & 2 | pins 1 & 2 | Closed | pins 2 & 3 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| P24D | pins 1 & 2 | pins 1 & 2 | Open | pins 2 & 3 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| P24S | pins 1 & 2 | pins 1 & 2 | Open | pins 1 & 2 |
| | closed | closed | | closed |
|------------+------------+------------+--------+------------|
| Pentium | pins 1 & 2 | pins 1 & 2 | Closed | pins 2 & 3 |
| Overdrive | closed | closed | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | RN20 | RN21 | RN22 | JC5 | JC6 |
|--------+------------+------------+-----------+------+------|
| CX486S | Not | Installed | Installed | Open | Open |
| | installed | | | | |
|--------+------------+------------+-----------+------+------|
|80486SX | Not | Not | Not | Open | Open |
| | installed | installed | installed | | |
|--------+------------+------------+-----------+------+------|
|CX486DX | Not | Installed | Installed | Open | Open |
| | installed | | | | |
|--------+------------+------------+-----------+------+------|
|80486DX | Not | Not | Not | Open | Open |
| | installed | installed | installed | | |
|--------+------------+------------+-----------+------+------|
|AM486DXL| Installed | Not | Not | Open | Open |
| | | installed | installed | | |
|--------+------------+------------+-----------+------+------|
|80486DX2| Not | Not | Not | Open | Open |
| | installed | installed | installed | | |
|--------+------------+------------+-----------+------+------|
| P4S | Not | Not | Not |Closed|Closed|
| | installed | installed | installed | | |
|--------+------------+------------+-----------+------+------|
| P23S | Not | Not | Not |Closed|Closed|
| | installed | installed | installed | | |
|--------+------------+------------+-----------+------+------|
| P24C | Not | Installed | Not |Closed|Closed|
| | installed | | installed | | |
|--------+------------+------------+-----------+------+------|
| P24CT | Not | Installed | Not |Closed|Closed|
| | installed | | installed | | |
|--------+------------+------------+-----------+------+------|
| P24D | Not | Installed | Not |Closed|Closed|
| | installed | | installed | | |
|--------+------------+------------+-----------+------+------|
| P24S | Not | Not | Not |Closed|Closed|
| | installed | installed | installed | | |
|--------+------------+------------+-----------+------+------|
| P24T | Not | Not | Not |Closed|Closed|
| | installed | installed | installed | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JK1 | JK2 | JK3 | JK4 |
|---------+------------+------------+------------+-----------|
| 25MHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 33MHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 40MHz | pins 1 & 2 | pins 1 & 2 | pins 2 & 3 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 50iMHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 50MHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 2 & |
| | closed | closed | closed | 3 closed |
|---------+------------+------------+------------+-----------|
| 66iMHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 75iMHz | pins 2 & 3 | pins 1 & 2 | pins 2 & 3 | pins 1 & |
| | closed | closed | closed | 2 closed |
|---------+------------+------------+------------+-----------|
| 100iMHz | pins 2 & 3 | pins 2 & 3 | pins 1 & 2 | pins 1 & |
| | closed | closed | closed | 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION (80486DX4 ONLY) |
|------------------------------------------------------------|
| Speed | J20 |
|----------------------------+-------------------------------|
| 3x | Open |
|----------------------------+-------------------------------|
| 2x | pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 2.5x | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE CONFIGURATION |
|------------------------------------------------------------|
| Setting | PS1 |
|---------------+--------------------------------------------|
| 3.3v | Installed |
|---------------+--------------------------------------------|
| 5v | pins 1 & 2, 3 & 4, 13 & 14, 15 & 16 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JV3 |
|----------------------------+-------------------------------|
| 0 wait states | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| 1 wait state | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JV2 |
|----------------------------+-------------------------------|
| <= 33MHz | pins 2 & 3 closed |
|----------------------------+-------------------------------|
| > 33MHz | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PARALLEL PORT CONFIGURATION |
|------------------------------------------------------------|
| Setting | JE | JF |
|------------------+--------------------+--------------------|
| 378 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 278 | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 3BC | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Disabled | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| PRINTER CONFIGURATION |
|------------------------------------------------------------|
| Type | JW3 | JW4 |
|------------------+--------------------+--------------------|
| Printer | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| EPP/SPP | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| EPP/ECP | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| EXT2FDD | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 1 CONFIGURATION |
|------------------------------------------------------------|
| Setting | JA | JB |
|------------------+--------------------+--------------------|
| 3F8 | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 2E8 | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 3E8 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Disabled | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SERIAL PORT 2 CONFIGURATION |
|------------------------------------------------------------|
| Setting | JC | JD |
|------------------+--------------------+--------------------|
| 2F8 | pins 2 & 3 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 2E8 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 3E8 | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| Disabled | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CONFIGURATION |
|------------------------------------------------------------|
| DMA | JW5 | JW6 |
|------------------+--------------------+--------------------|
| 1 | pins 1 & 2 closed | pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 3 | pins 2 & 3 closed | pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| IDE SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | J5 | J6 |
|------------------+--------------------+--------------------|
| 1 | pins 1 & 2 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 0 | pins 2 & 3 closed | pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 2 | pins 1 & 2 closed | pins 1 & 2 closed |
+------------------------------------------------------------+