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# DIGITAL EQUIPMENT CORPORATION
ALPHASTATION 500
Processor Alpha
Processor Speed 266/300/333MHz
Chip Set DEC
Video Chip Set None
Maximum Onboard 512MB
Memory
Maximum Video None
Memory
Cache 2MB
BIOS Unidentified
Dimensions 330mm x 218mm
I/O Options Floppy drive interface, SCSI interface,
external SCSI connector, parallel port, PS/2
mouse port, serial ports (2), riser slot,
audio card connector, media adapter unit
connector, SROM port
NPU Options None
IMG IMG 1
+------------------------------------------------------------+
| CONNECTIONS |
|------------------------------------------------------------|
| Purpose | Location | Purpose | Location |
|-------------------+----------+------------------+----------|
| Chassis fan power | J1 | Floppy drive | J38 |
| | | interface | |
|-------------------+----------+------------------+----------|
| Cache fan | J3 | PS/2 mouse port | J39 |
| connector | | | |
|-------------------+----------+------------------+----------|
| Diagnostic port | J4 | Serial port 1 | J40 |
|-------------------+----------+------------------+----------|
| Front panel | J5 | Serial port 2 | J40A |
| connector | | | |
|-------------------+----------+------------------+----------|
| SROM port | J24 | Parallel port | J41 |
|-------------------+----------+------------------+----------|
| Media adapter | J32 | External SCSI | J42 |
| unit connector | | connector | |
|-------------------+----------+------------------+----------|
| Audio card | J36 | Riser slot | SL1 |
| connector | | | |
|-------------------+----------+------------------+----------|
| SCSI interface | J37 | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| USER CONFIGURABLE SETTINGS |
|------------------------------------------------------------|
| Function | Label | Position |
|-------------------------------------+-------+--------------|
| » | Factory configured - do not | J2 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Front panel button set as reset | J6 | Pins 1 & 2 |
| | switch | | closed |
|---+---------------------------------+-------+--------------|
| | Front panel button set as halt | J6 | Pins 2 & 3 |
| | switch | | closed |
|---+---------------------------------+-------+--------------|
| » | Secure console disabled | J9 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Secure console enabled | J9 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Primary console enabled | J10 | Pins 2 & 3 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| | Alternate console enabled | J10 | Pins 1 & 2 |
| | | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J15 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J16 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Flash BIOS write protect | J18 | Pins 2 & 3 |
| | disabled | | closed |
|---+---------------------------------+-------+--------------|
| | Flash BIOS write protect | J18 | Pins 1 & 2 |
| | enabled | | closed |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J20 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J33 | Unidentified |
| | alter | | |
|---+---------------------------------+-------+--------------|
| » | Factory configured - do not | J35 | Unidentified |
| | alter | | |
+------------------------------------------------------------+
+------------------------------------------------------------+
| DIMM CONFIGURATION |
|------------------------------------------------------------|
| Size | Bank 0 | Bank 1 |
|------------------+--------------------+--------------------|
| 32MB | (4) 1M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (4) 2M x 64 | None |
|------------------+--------------------+--------------------|
| 128MB | (4) 4M x 64 | None |
|------------------+--------------------+--------------------|
| 256MB | (4) 8M x 64 | None |
|------------------+--------------------+--------------------|
| 64MB | (4) 1M x 64 | (4) 1M x 64 |
|------------------+--------------------+--------------------|
| 96MB | (4) 2M x 64 | (4) 1M x 64 |
|------------------+--------------------+--------------------|
| 160MB | (4) 4M x 64 | (4) 1M x 64 |
|------------------+--------------------+--------------------|
| 288MB | (4) 8M x 64 | (4) 1M x 64 |
|------------------+--------------------+--------------------|
| 128MB | (4) 2M x 64 | (4) 2M x 64 |
|------------------+--------------------+--------------------|
| 192MB | (4) 4M x 64 | (4) 2M x 64 |
|------------------+--------------------+--------------------|
| 320MB | (4) 8M x 64 | (4) 2M x 64 |
|------------------+--------------------+--------------------|
| 256MB | (4) 4M x 64 | (4) 4M x 64 |
|------------------+--------------------+--------------------|
| 384MB | (4) 8M x 64 | (4) 4M x 64 |
|------------------+--------------------+--------------------|
| 512MB | (4) 8M x 64 | (4) 8M x 64 |
+------------------------------------------------------------+
+------------------------------------------------------------+
| CACHE CONFIGURATION |
|------------------------------------------------------------|
| Note: 2MB cache is factory installed and is not |
| configurable. |
+------------------------------------------------------------+
+------------------------------------------------------------+
| SROM SELECTION |
|------------------------------------------------------------|
| Setting | J11 | J12 | J13 | J14 | J17 | J19 |
|------------------+------+------+------+------+------+------|
| Power up |Closed| Open | Open | Open | Open | Open |
|------------------+------+------+------+------+------+------|
| Mini console | Open |Closed| Open | Open | Open | Open |
|------------------+------+------+------+------+------+------|
| Floppy loader | Open | Open |Closed| Open | Open | Open |
|------------------+------+------+------+------+------+------|
| Mem test | Open | Open | Open |Closed| Open | Open |
|------------------+------+------+------+------+------+------|
|MCHK mini console | Open | Open | Open | Open |Closed| Open |
|------------------+------+------+------+------+------+------|
| No init mini | Open | Open | Open | Open | Open |Closed|
| console | | | | | | |
+------------------------------------------------------------+