(TXT) View Source
# CONCORD OFFICE AUTOMATION INDUSTRIAL (HK) LTD.
COA-921
Processor 80486SX/SL80486SX/UMC486DX/AM486DX/80486DX/SL80486DX/
CX486DX2/IBM486DX2/TI486DX2/UMC486DX2/AM486DX2/
80486DX2/SL80486DX2/CX486DX4/IBM486DX4/AM486DX4/
(SL)AM486DX4/SL80486DX4/CXP24D/P24D/P24T/CX5X86
Processor 25/33/40/50(internal)/50/66(internal)/75(internal)/100(internal)/
Speed 120(internal)MHz
Chip Set UMC
Video Chip None
Set
Maximum 256MB
Onboard
Memory
Maximum None
Video
Memory
Cache 64/128/256/512KB
BIOS Unidentified
Dimensions 254mm x 218mm
I/O 32-bit PCI slots (3), floppy drive interface, green PC connector,
Options IDE interfaces (2), parallel port, serial ports (2)
NPU None
Options
(IMG) IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Floppy drive | CN1 | IDE interface | J29 |
| interface | | LED | |
|-------------------+----------+------------------+----------|
| Parallel port | CN2 | Turbo switch | J30 |
|-------------------+----------+------------------+----------|
| Serial port | CN3 | Reset switch | J31 |
|-------------------+----------+------------------+----------|
| Serial port | CN4 | Turbo LED | J32 |
|-------------------+----------+------------------+----------|
| IDE interface 2 | CN5 | Speaker | J33 |
|-------------------+----------+------------------+----------|
| IDE interface 1 | CN6 | Power LED & | J34 |
| | | keylock | |
|-------------------+----------+------------------+----------|
| External battery | J2 | 32-bit PCI slots | PC1 - |
| | | | PC3 |
|-------------------+----------+------------------+----------|
| Green PC | J10 | | |
| connector | | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J1 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| | Battery type select external | J2 | Closed |
|---+---------------------------------+-------+--------------|
| | Battery type select internal | J2 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | CMOS memory clear | J2 | Pins 3 & 4 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J5 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 1MB | (1) 256K x 36 | None |
|------------------+--------------------+--------------------|
| 4MB | (1) 1M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (1) 2M x 36 | None |
|------------------+--------------------+--------------------|
| 8MB | (1) 1M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 12MB | (1) 2M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 16MB | (1) 4M x 36 | None |
|------------------+--------------------+--------------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 20MB | (1) 4M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 24MB | (1) 4M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 32MB | (1) 8M x 36 | None |
|------------------+--------------------+--------------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 36MB | (1) 8M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 40MB | (1) 8M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 48MB | (1) 8M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 64MB | (1) 16M x 36 | None |
|------------------+--------------------+--------------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 |
|------------------+--------------------+--------------------|
| 68MB | (1) 16M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 72MB | (1) 16M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 80MB | (1) 16M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 96MB | (1) 16M x 36 | (1) 8M x 36 |
|------------------+--------------------+--------------------|
| 128MB | (1) 32M x 36 | None |
|------------------+--------------------+--------------------|
| 128MB | (1) 16M x 36 | (1) 16M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 132MB | (1) 32M x 36 | (1) 1M x 36 |
|------------------+--------------------+--------------------|
| 136MB | (1) 32M x 36 | (1) 2M x 36 |
|------------------+--------------------+--------------------|
| 144MB | (1) 32M x 36 | (1) 4M x 36 |
|------------------+--------------------+--------------------|
| 160MB | (1) 32M x 36 | (1) 8M x 36 |
|------------------+--------------------+--------------------|
| 192MB | (1) 32M x 36 | (1) 16M x 36 |
|------------------+--------------------+--------------------|
| 256MB | (1) 64M x 36 | None |
|------------------+--------------------+--------------------|
| 256MB | (1) 32M x 36 | (1) 32M x 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | TAG |
|------------------+--------------------+--------------------|
| 64KB | (4) 16K x 8 | Unidentified |
|------------------+--------------------+--------------------|
| 128KB | (4) 32K x 8 | Unidentified |
|------------------+--------------------+--------------------|
| 256KB | (4) 64K x 8 | Unidentified |
|------------------+--------------------+--------------------|
| 512KB | (4) 128K x 8 | Unidentified |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED SELECTION |
|------------------------------------------------------------|
| Speed | J28 |
|--------------------------+---------------------------------|
| 25MHz | Pins 1 & 2 closed |
|--------------------------+---------------------------------|
| 33MHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 40MHz | Pins 1 & 2, 3 & 4 closed |
|--------------------------+---------------------------------|
| 50iMHz | Pins 1 & 2 closed |
|--------------------------+---------------------------------|
| 50MHz | Pins 5 & 6 closed |
|--------------------------+---------------------------------|
| 66iMHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 75iMHz | Pins 1 & 2 closed |
|--------------------------+---------------------------------|
| 80iMHz | Pins 1 & 2, 3 & 4 closed |
|--------------------------+---------------------------------|
| 100iMHz | Pins 1 & 2, 3 & 4, 5 & 6 closed |
|--------------------------+---------------------------------|
| 120iMHz | Pins 1 & 2, 3 & 4 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION |
|------------------------------------------------------------|
| Type | J6 | J7 | J12 | J13 | J14 | J15 |
|--------------+------+------+--------+------+-------+-------|
| 80486SX | 1 & | 1 & | Open | 2 & | Open | Open |
| | 2 | 2 | | 3 | | |
|--------------+------+------+--------+------+-------+-------|
| SL80486SX | 1 & | 1 & | 2 & 3, | 2 & | Open | Open |
| | 2 | 2 | 4 & 5 | 3 | | |
|--------------+------+------+--------+------+-------+-------|
| UMC486DX | 1 & | 1 & | 2 & 3, | 1 & | Open | 3 & 4 |
| | 2 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| AM486DX | 1 & | 2 & | Open | 1 & | Open | 3 & 4 |
| | 2 | 3 | | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| 80486DX | 1 & | 1 & | Open | 1 & | Open | 3 & 4 |
| | 2 | 2 | | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| SL80486DX | 1 & | 1 & | 2 & 3, | 1 & | Open | 3 & 4 |
| | 2 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| CX486DX2 | 2 & | 1 & | 1 & 2, | 1 & | 2 & 3 | 3 & 4 |
| | 3 | 2 | 3 & 4 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| IBM486DX2 | 2 & | 1 & | 1 & 2, | 1 & | 2 & 3 | 3 & 4 |
| | 3 | 2 | 3 & 4 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| TI486DX2 | 2 & | 1 & | 1 & 2, | 1 & | 2 & 3 | 3 & 4 |
| | 3 | 2 | 3 & 4 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| UMC486DX2 | 1 & | 1 & | 2 & 3, | 1 & | Open | 3 & 4 |
| | 2 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| AM486DX2 | 1 & | 2 & | Open | 1 & | Open | 3 & 4 |
| | 2 | 3 | | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| 80486DX2 | 1 & | 1 & | Open | 1 & | Open | 3 & 4 |
| | 2 | 2 | | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| SL80486DX2 | 1 & | 1 & | 2 & 3, | 1 & | Open | 3 & 4 |
| | 2 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| CX486DX4 | 2 & | 1 & | 1 & 2, | 1 & | 2 & 3 | 3 & 4 |
| | 3 | 2 | 3 & 4 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| IBM486DX4 | 2 & | 1 & | 1 & 2, | 1 & | 2 & 3 | 3 & 4 |
| | 3 | 2 | 3 & 4 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| AM486DX4 | 1 & | 2 & | Open | 1 & | Open | 3 & 4 |
| | 2 | 3 | | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| (SL)AM486DX4 | 1 & | 1 & | 2 & 3, | 1 & | Open | 3 & 4 |
| | 2 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| SL80486DX4 | 1 & | 1 & | 2 & 3, | 1 & | Open | 3 & 4 |
| | 2 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| CXP24D | 2 & | 1 & | 2 & 3, | 1 & | Open | 3 & 4 |
| | 3 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| P24D | 1 & | 1 & | 2 & 3, | 1 & | Open | 3 & 4 |
| | 2 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| P24T | 1 & | 1 & | 2 & 3, | 1 & | 1 & 2 | 2 & 3 |
| | 2 | 2 | 4 & 5 | 2, 3 | | |
| | | | | & 4 | | |
|--------------+------+------+--------+------+-------+-------|
| CS5X86 | 1 & | 1 & | 1 & 2, | 2 & | Open | 3 & 4 |
| | 2 | 2 | 3 & 4 | 3, 4 | | |
| | | | | & 5 | | |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON'T) |
|------------------------------------------------------------|
| Type | J16 | J17 | J18 | J19 |
|---------------+---------------+---------+---------+--------|
| 80486SX | 1 & 2 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| SL80486SX | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| UMC486DX | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| AM486DX | 1 & 2 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| 80486DX | 1 & 2 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| SL80486DX | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| CX486DX2 | 3 & 4 | 2 & 3 | 1 & 2 | 2 & 3 |
|---------------+---------------+---------+---------+--------|
| IBM486DX2 | 3 & 4 | 2 & 3 | 1 & 2 | 2 & 3 |
|---------------+---------------+---------+---------+--------|
| TI486DX2 | 3 & 4 | 2 & 3 | 1 & 2 | 2 & 3 |
|---------------+---------------+---------+---------+--------|
| UMC486DX2 | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| AM486DX2 | 1 & 2 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| 80486DX2 | 1 & 2 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| SL80486DX2 | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| CX486DX4 | 3 & 4 | 2 & 3 | 1 & 2 | Open |
|---------------+---------------+---------+---------+--------|
| IBM486DX4 | 3 & 4 | 2 & 3 | 1 & 2 | Open |
|---------------+---------------+---------+---------+--------|
| AM486DX4 | 1 & 2 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| (SL)AM486DX4 | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| SL80486DX4 | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| CXP24D | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| P24D | 3 & 4 | Open | Open | Open |
|---------------+---------------+---------+---------+--------|
| P24T | 3 & 4, 5 & 6 | 1 & 2 | 2 & 3 | Open |
|---------------+---------------+---------+---------+--------|
| CS5X86 | 3 & 4 | Open | Open | Open |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON'T) |
|------------------------------------------------------------|
| Type | J20 | J21 | J22 | J23 | J24 |
|---------------+---------+--------+--------+-------+--------|
| 80486SX | Open | Open | Open | Open | Open |
|---------------+---------+--------+--------+-------+--------|
| SL80486SX | 1 & 2 | Open | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| UMC486DX | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| AM486DX | Open | Open | Open | Open | Open |
|---------------+---------+--------+--------+-------+--------|
| 80486DX | Open | Open | Open | Open | Open |
|---------------+---------+--------+--------+-------+--------|
| SL80486DX | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| CX486DX2 | 2 & 3 | Open | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| IBM486DX2 | 2 & 3 | Open | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| TI486DX2 | 2 & 3 | Open | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| UMC486DX2 | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| AM486DX2 | Open | Open | Open | Open | Open |
|---------------+---------+--------+--------+-------+--------|
| 80486DX2 | Open | Open | Open | Open | Open |
|---------------+---------+--------+--------+-------+--------|
| SL80486DX2 | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| CX486DX4 | 2 & 3 | Open | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| IBM486DX4 | 2 & 3 | Open | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| AM486DX4 | Open | Open | Open | Open | Open |
|---------------+---------+--------+--------+-------+--------|
| (SL)AM486DX4 | 1 & 2 | Open | 2 & 3 | 1 & 2 | Closed |
|---------------+---------+--------+--------+-------+--------|
| SL80486DX4 | 1 & 2 | Open | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| CXP24D | 1 & 2 | Open | 2 & 3 | 1 & 2 | Closed |
|---------------+---------+--------+--------+-------+--------|
| P24D | 1 & 2 | 2 & 3 | 2 & 3 | 1 & 2 | Closed |
|---------------+---------+--------+--------+-------+--------|
| P24T | 1 & 2 | 2 & 3 | Open | 1 & 2 | Open |
|---------------+---------+--------+--------+-------+--------|
| CS5X86 | 1 & 2 | Open | 2 & 3 | 1 & 2 | Closed |
|------------------------------------------------------------|
| Note: Pins designated should be in the closed position. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE SELECTION (CON'T) |
|------------------------------------------------------------|
| Type | J25 | J26 | J27 | J36 |
|--------------+-----------+-----------+----------+----------|
| 80486SX | Open | Open | Open | Closed |
|--------------+-----------+-----------+----------+----------|
| SL80486SX | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| UMC486DX | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| AM486DX | Open | Open | Open | Closed |
|--------------+-----------+-----------+----------+----------|
| 80486DX | Open | Open | Open | Closed |
|--------------+-----------+-----------+----------+----------|
| SL80486DX | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| CX486DX2 | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| IBM486DX2 | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| TI486DX2 | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| UMC486DX2 | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| AM486DX2 | Open | Open | Open | Closed |
|--------------+-----------+-----------+----------+----------|
| 80486DX2 | Open | Open | Open | Closed |
|--------------+-----------+-----------+----------+----------|
| SL80486DX2 | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| CX486DX4 | Open | Open | Closed | Open |
|--------------+-----------+-----------+----------+----------|
| IBM486DX4 | Open | Open | Closed | Open |
|--------------+-----------+-----------+----------+----------|
| AM486DX4 | Open | Open | Open | Closed |
|--------------+-----------+-----------+----------+----------|
| (SL)AM486DX4 | Closed | Closed | Open | Open |
|--------------+-----------+-----------+----------+----------|
| SL80486DX4 | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| CXP24D | Closed | Closed | Closed | Open |
|--------------+-----------+-----------+----------+----------|
| P24D | Closed | Closed | Open | Open |
|--------------+-----------+-----------+----------+----------|
| P24T | Open | Open | Open | Open |
|--------------+-----------+-----------+----------+----------|
| CS5X86 | Closed | Closed | Closed | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU VOLTAGE SELECTION |
|------------------------------------------------------------|
| Voltage | J8 | J9 | J11 | J35 |
|---------+---------------+------------+--------+------------|
| 3.3v | Pins 2 & 3 | Pins 2 & 3 | Closed | Pins 2 & 3 |
| | closed | closed | | closed |
|---------+---------------+------------+--------+------------|
| 4v | Pins 2 & 3 | Pins 2 & 3 | Open | Pins 2 & 3 |
| | closed | closed | | closed |
|---------+---------------+------------+--------+------------|
| 5v | Pins 1 & 2 | Pins 1 & 2 | Closed | Pins 1 & 2 |
| | closed | closed | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DMA CHANNEL SELECTION |
|------------------------------------------------------------|
| Channel | J3 | J4 |
|------------------+--------------------+--------------------|
| 1 | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 3 | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+