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# APRICOT COMPUTERS LIMITED
EPX (EISA DESKTOP/ FT//EX DESKSIDE)
Processor 80486SX/80487SX/ODP486SX/80486DX/80486DX2/Pentium
Overdrive/Pentium (depends on CPU card installed)
Processor 25/33/40/50/50(internal)/60/66(internal)/66/80MHz
Speed
Chip Set Unidentified
Max. Onboard 128/256MB (depends on CPU card installed)
DRAM
Cache 64/128/256/512/1024KB (depends on CPU card
installed)
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options External CPU slot, 32-bit VESA local bus slots
(2), IDE interface, SCSI connectors (2), parallel
port, PS/2 mouse port, serial ports (2)
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-----------------+----------+--------------------+----------|
| PS/2 mouse port | CN1 | SCSI connector | CN6 |
|-----------------+----------+--------------------+----------|
| Serial port 1 | CN2 | Parallel port | CN7 |
|-----------------+----------+--------------------+----------|
| Serial port 2 | CN3 | Reset switch | JP7 |
|-----------------+----------+--------------------+----------|
| IDE interface | CN4 | External CPU slot | SL1 |
|-----------------+----------+--------------------+----------|
| SCSI connector | CN5 | 32-bit VESA local | SL2 & |
| | | bus slots | SL3 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | Factory configured - do not | JP5 | Open |
| | alter | | |
|---+----------------------------------+--------+------------|
| » | Password enabled | JP6 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Password disabled | JP6 | Pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | IRQ type select IRQ10 | JP8 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | IRQ type select IRQ11 | JP8 | Pins 2 & 3 |
| | | | closed |
|---+----------------------------------+--------+------------|
| » | On board buzzer enabled | JP9 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | External speaker installed | JP9 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (80486 EPX DESKTOP & FT//EX |
| DESKSIDE) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|------+-------------+-------------+------------+------------|
| 4MB | (1) 1M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 8MB | (1) 2M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 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 | |
|------+-------------+-------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 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 |
|------+-------------+-------------+------------+------------|
| 20MB | (1) 1M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 28MB | (1) 1M x 36 | (1) 4M x 36 | (1) 1M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 8M x 36 | NONE | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 36MB | (1) 4M x 36 | (1) 4M x 36 | (1) 1M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 1M x 36 | (1) 1M x | (1) 4M x |
| | | | 36 | 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 | |
|------+-------------+-------------+------------+------------|
| 52MB | (1) 1M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 52MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 1M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x 36 | NONE | NONE |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x 36 | (1) 4M x | (1) 4M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 64MB | (1) 16M x | NONE | NONE | NONE |
| | 36 | | | |
|------+-------------+-------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x 36 | (1) 16M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 80MB | (1) 4M x 36 | (1) 16M x | NONE | NONE |
| | | 36 | | |
|------+-------------+-------------+------------+------------|
| 84MB | (1) 1M x 36 | (1) 4M x 36 | (1) 16M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 84MB | (1) 4M x 36 | (1) 16M x | (1) 1M x | NONE |
| | | 36 | 36 | |
|------+-------------+-------------+------------+------------|
| 88MB | (1) 1M x 36 | (1) 1M x 36 | (1) 4M x | (1) 16M x |
| | | | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 88MB | (1) 4M x 36 | (1) 16M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|------+-------------+-------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x 36 | (1) 16M x | NONE |
| | | | 36 | |
|------+-------------+-------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 16M x | (1) 4M x | NONE |
| | | 36 | 36 | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (80486 EPX DESKTOP & FT//EX |
| DESKSIDE CON'T) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|--------+------------+------------+------------+------------|
| 100MB | (1) 1M x | (1) 4M x | (1) 4M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 100MB | (1) 4M x | (1) 16M x | (1) 4M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 112MB | (1) 4M x | (1) 4M x | (1) 4M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 112MB | (1) 4M x | (1) 16M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 128MB | (1) 16M x | (1) 16M x | NONE | NONE |
| | 36 | 36 | | |
|--------+------------+------------+------------+------------|
| 132MB | (1) 16M x | (1) 16M x | (1) 1M x | NONE |
| | 36 | 36 | 36 | |
|--------+------------+------------+------------+------------|
| 136MB | (1) 16M x | (1) 16M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 144MB | (1) 16M x | (1) 16M x | (1) 4M x | NONE |
| | 36 | 36 | 36 | |
|--------+------------+------------+------------+------------|
| 144MB | (1) 4M x | (1) 16M x | (1) 16M x | NONE |
| | 36 | 36 | 36 | |
|--------+------------+------------+------------+------------|
| 148MB | (1) 1M x | (1) 4M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 148MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 160MB | (1) 1M x | (1) 1M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 160MB | (1) 1M x | (1) 16M x | (1) 1M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 160MB | (1) 16M x | (1) 16M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 192MB | (1) 16M x | (1) 16M x | (1) 16M x | NONE |
| | 36 | 36 | 36 | |
|--------+------------+------------+------------+------------|
| 208MB | (1) 4M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 208MB | (1) 16M x | (1) 16M x | (1) 4M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
|--------+------------+------------+------------+------------|
| 256MB | (1) 16M x | (1) 16M x | (1) 16M x | (1) 16M x |
| | 36 | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (PENTIUM EPX DESKTOP) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|-------+-------------+------------+------------+------------|
| 8MB | (1) 1M x 36 | (1) 1M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 1M x 36 | (1) 1M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 16MB | (1) 2M x 36 | (1) 2M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 1M x 36 | (1) 1M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 24MB | (1) 2M x 36 | (1) 2M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 2M x 36 | (1) 2M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 32MB | (1) 4M x 36 | (1) 4M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 1M x 36 | (1) 1M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 40MB | (1) 4M x 36 | (1) 4M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 2M x 36 | (1) 2M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 48MB | (1) 4M x 36 | (1) 4M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 4M x 36 | (1) 4M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 64MB | (1) 8M x 36 | (1) 8M x | NONE | NONE |
| | | 36 | | |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 1M x 36 | (1) 1M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 72MB | (1) 8M x 36 | (1) 8M x | (1) 1M x | (1) 1M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 2M x 36 | (1) 2M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 80MB | (1) 8M x 36 | (1) 8M x | (1) 2M x | (1) 2M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 4M x 36 | (1) 4M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 96MB | (1) 8M x 36 | (1) 8M x | (1) 4M x | (1) 4M x |
| | | 36 | 36 | 36 |
|-------+-------------+------------+------------+------------|
| 128MB | (1) 8M x 36 | (1) 8M x | (1) 8M x | (1) 8M x |
| | | 36 | 36 | 36 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (PENTIUM FT//EX DESKSIDE MAINBOARD) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|---------+------------+------------+------------+-----------|
| 8MB | (1) 1M x | (2) 1M x | NONE | NONE |
| | 36 | 36 | | |
|---------+------------+------------+------------+-----------|
| 16MB | (1) 1M x | (1) 1M x | NONE | NONE |
| | 36 | 36 | | |
|---------+------------+------------+------------+-----------|
| 24MB | (1) 1M x | (1) 1M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 32MB | (1) 1M x | (1) 1M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 56MB | (1) 1M x | (1) 1M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 64MB | (1) 2M x | (1) 2M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 120MB | (1) 1M x | (1) 1M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 128MB | (1) 4M x | (1) 4M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 256MB | (1) 8M x | (1) 8M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|------------------------------------------------------------|
| Note: If installing 8MB or 24MB use only DRAM sockets on |
| mainboard. Any other configuration uses this table and the |
| table below. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DRAM CONFIGURATION (PENTIUM FT//EX DESKSIDE CPU BOARD) |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 | Bank 2 | Bank 3 |
|---------+------------+------------+------------+-----------|
| 16MB | (1) 1M x | (1) 1M x | NONE | NONE |
| | 36 | 36 | | |
|---------+------------+------------+------------+-----------|
| 32MB | (1) 1M x | (1) 1M x | (1) 1M x | (1) 1M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 56MB | (1) 4M x | (1) 4M x | NONE | NONE |
| | 36 | 36 | | |
|---------+------------+------------+------------+-----------|
| 64MB | (1) 2M x | (1) 2M x | (1) 2M x | (1) 2M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 120MB | (1) 4M x | (1) 4M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 128MB | (1) 4M x | (1) 4M x | (1) 4M x | (1) 4M x |
| | 36 | 36 | 36 | 36 |
|---------+------------+------------+------------+-----------|
| 256MB | (1) 8M x | (1) 8M x | (1) 8M x | (1) 8M x |
| | 36 | 36 | 36 | 36 |
|------------------------------------------------------------|
| Note: If installing 8MB or 24MB use only DRAM sockets on |
| mainboard. Any other configuration uses this table and the |
| table above. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SCSI CONFIGURATION |
|------------------------------------------------------------|
| Setting | JP1 | JP2 |
|--------------------+-------------------+-------------------|
| Installed | Open | Open |
|--------------------+-------------------+-------------------|
| Not installed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| VESA WAIT STATE CONFIGURATION |
|------------------------------------------------------------|
| Wait states | JP3 |
|----------------------------+-------------------------------|
| 0 wait states | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| 1 wait state | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP4 |
|----------------------------+-------------------------------|
| <= 33MHz | Pins 1 & 2 closed |
|----------------------------+-------------------------------|
| > 33MHz | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BATTERY TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP10 | JP11 | JP12 | JP13 |
|--------+------------+------------+------------+------------|
| Dallas | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 | Pins 2 & 3 |
| | closed | closed | closed | closed |
|--------+------------+------------+------------+------------|
| B.M. | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed | closed |
+------------------------------------------------------------+
IMG IMG 2
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|--------------------------------------+--------+------------|
| » | VLB LADS MHz support select | JP3 | Pins 1 & 2 |
| | 33MHz | | closed |
|---+----------------------------------+--------+------------|
| | VLB LADS MHz support select | JP3 | Pins 2 & 3 |
| | 50MHz | | closed |
|---+----------------------------------+--------+------------|
| » | Local bus disabled | JP10 | Pins 1 & 2 |
| | | | closed |
|---+----------------------------------+--------+------------|
| | Local bus enabled | JP10 | Pins 2 & 3 |
| | | | closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: The bank configuration and chip sizes are |
| unidentified by the manufacturer. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP11 | JP12 | JP13 | JP14 | JP18 | JP19 | JP20 |
|-------+-------+-------+-------+-------+------+------+------|
| 64KB | Open | Open | Open | Open | Open | Open | Open |
|-------+-------+-------+-------+-------+------+------+------|
| 128KB |Closed | Open | Open | Open | Open |Closed| Open |
|-------+-------+-------+-------+-------+------+------+------|
| 256KB |Closed |Closed | Open | Open | Open |Closed|Closed|
|-------+-------+-------+-------+-------+------+------+------|
|1024KB |Closed |Closed |Closed |Closed |Closed|Closed|Closed|
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE BANK CONFIGURATION |
|------------------------------------------------------------|
| Size | JP15 | JP16 |
|------------------+--------------------+--------------------|
| Single bank | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| Double bank | Pins 2 & 3 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU TYPE CONFIGURATION |
|------------------------------------------------------------|
| Type | JP4 |
|------------------------------+-----------------------------|
| 80486SX | Pins 1 & 2 closed |
|------------------------------+-----------------------------|
| 80487SX | Pins 2 & 3 closed |
|------------------------------+-----------------------------|
| ODP486SX | Pins 2 & 3 closed |
|------------------------------+-----------------------------|
| 80486DX/DX2 | Open |
|------------------------------+-----------------------------|
| Pentium Overdrive | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP8 | JP9 |
|------------------+--------------------+--------------------|
| 25MHz | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 33MHz | Pins 1 & 2 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 40MHz | Pins 2 & 3 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 50iMHz | Pins 1 & 2 closed | Pins 1 & 2 closed |
|------------------+--------------------+--------------------|
| 50MHz | Pins 2 & 3 closed | Pins 2 & 3 closed |
|------------------+--------------------+--------------------|
| 66iMHz | Pins 1 & 2 closed | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU CLOCK SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 | JP2 |
|--------------------+--------------------+------------------|
| 25MHz | Open | Open |
|--------------------+--------------------+------------------|
| 33MHz | Open | Closed |
|--------------------+--------------------+------------------|
| 40MHz | Closed | Open |
|--------------------+--------------------+------------------|
| 50iMHz | Open | Open |
|--------------------+--------------------+------------------|
| 50MHz | Closed | Closed |
|--------------------+--------------------+------------------|
| 66iMHz | Open | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| BUS SPEED CONFIGURATION |
|------------------------------------------------------------|
| CPU speed | JP17 |
|----------------------------+-------------------------------|
| <= 33MHz | Pins 1 & 2, 3 & 4 closed |
|----------------------------+-------------------------------|
| > 33MHz | Pins 2 & 3 closed |
+------------------------------------------------------------+
IMG IMG 3
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|---------------------------------------+---------+----------|
| » | Factory configured - do not alter | JP4 | Open |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: The bank configuration and chip sizes are |
| unidentified by the manufacturer. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP11 | JP12 | JP14 | JP15 |
|---------+------------+------------+------------+-----------|
| 256KB | Open | Open | Open | Open |
|---------+------------+------------+------------+-----------|
| 1024KB | Closed | Closed | Closed | Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU OSCILLATOR SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 | JP2 | JP3 |
|-------+-----------------+-----------------+----------------|
| 33MHz | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 40MHz | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 50MHz | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 60MHz | Pins 2 & 3 | N/A | N/A |
| | closed | | |
|-------+-----------------+-----------------+----------------|
| 66MHz | N/A | Pins 1 & 2 | Pins 1 & 2 |
| | | closed | closed |
|-------+-----------------+-----------------+----------------|
| 80MHz | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+
IMG IMG 4
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Jumper | Position |
|----------------------------+-----------+-------------------|
| » | Local bus enabled | JP4 | Pins 1 & 2 closed |
|---+------------------------+-----------+-------------------|
| | Local bus disabled | JP4 | Pins 2 & 3 closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: The bank configuration and chip sizes are |
| unidentified by the manufacturer. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE JUMPER CONFIGURATION |
|------------------------------------------------------------|
| Size | JP10 | JP11 | JP12 | JP13 | JP14 | JP15 |
|--------+--------+--------+--------+--------+-------+-------|
| 128KB | Open | Open | Open | Open | Open | Open |
|--------+--------+--------+--------+--------+-------+-------|
| 256KB | Closed | Open | Open | Closed | Open | Open |
|--------+--------+--------+--------+--------+-------+-------|
| 512KB | Closed | Closed | Open | Closed |Closed | Open |
|--------+--------+--------+--------+--------+-------+-------|
| 1024KB | Closed | Closed | Closed | Closed |Closed |Closed |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE BANK CONFIGURATION |
|------------------------------------------------------------|
| Size | JP8 | JP9 |
|--------------------+-------------------+-------------------|
| Single bank | (4) 8K x 8 | (1) 8K x 8 |
|--------------------+-------------------+-------------------|
| Double bank | (4) 32K x 8 | (1) 32K x 8 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CPU OSCILLATOR SPEED CONFIGURATION |
|------------------------------------------------------------|
| Speed | JP1 | JP2 | JP3 |
|-------+-----------------+-----------------+----------------|
| 33MHz | Pins 1 & 2 | Pins 1 & 2 | Pins 2 & 3 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 40MHz | Pins 2 & 3 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 50MHz | Pins 1 & 2 | Pins 2 & 3 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 66MHz | Pins 2 & 3 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
|-------+-----------------+-----------------+----------------|
| 80MHz | Pins 1 & 2 | Pins 1 & 2 | Pins 1 & 2 |
| | closed | closed | closed |
+------------------------------------------------------------+