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SYSTEM 40XX/XE
DELL COMPUTER CORPORATION
SYSTEM 40XX/XE
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Processor
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80486DX/80486DX2
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Processor Speed
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33/50(internal)/66(internal)MHz
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Chip Set
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Intel
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Video Chip Set
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Unidentified
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Maximum Onboard Memory
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128MB
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Maximum Video Memory
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1MB
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Cache
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Unidentified
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BIOS
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Unidentified
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Dimensions
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330mm x 218mm
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I/O Options
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Floppy drive interface, IDE interface, parallel port, PS/2 mouse port, serial ports (2), feature connector, VGA port, riser slot, cache slot
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NPU Options
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None
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CONNECTIONS
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Purpose
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Location
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Purpose
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Location
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Feature connector
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CN1
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External battery
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JBAT
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PS/2 mouse port
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CN2
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Front panel connector
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JCTRL
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Serial port 2
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CN3
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IDE interface LED
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JLED
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Serial port 1
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CN4
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Power staging connector (out)
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PROUT
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Parallel port
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CN5
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Power staging connector (in)
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PWRIN
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VGA port
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CN6
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Riser slot
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SL1
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IDE interface
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CN7
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Cache slot
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SL2
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Floppy drive interface
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CN8
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USER CONFIGURABLE SETTINGS
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Function
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Label
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Position
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»
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Factory configured - do not alter
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30MHZ
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Unidentified
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»
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AT ROM card disabled
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ATRM
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Open
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AT ROM card enabled
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ATRM
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Closed
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»
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System/video BIOS normal operation
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CLRB
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Open
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System/video BIOS clear
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CLRB
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Closed
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»
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Flash BIOS normal operation
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CLRE
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Open
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Flash BIOS clear
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CLRE
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Closed
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»
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Factory configured - do not alter
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CN9
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Unidentified
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»
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Flash BIOS upgradable with a diskette
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EFLU
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Closed
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Flash BIOS not upgradable with a diskette
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EFLU
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Open
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»
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Password enabled
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EPWD
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Closed
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Password disabled
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EPWD
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Open
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»
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On board video enabled
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EVGA
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Closed
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On board video disabled
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EVGA
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Open
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»
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I/O controller address select 26Eh - 26Fh
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IOALT
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Open
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I/O controller address select 398h - 398Fh
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IOALT
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Closed
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»
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Factory configured - do not alter
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J1
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Unidentified
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»
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Factory configured - do not alter
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J2
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Unidentified
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»
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Factory configured - do not alter
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J3
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Unidentified
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DRAM CONFIGURATION
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Size
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Bank 0
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Bank 1
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Bank 2
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Bank 3
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4MB
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(1) 512K x 36
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(1) 512K x 36
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None
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None
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6MB
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(1) 1M x 36
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(1) 512K x 36
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None
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None
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8MB
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(1) 1M x 36
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(1) 1M x 36
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None
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None
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12MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 512K x 36
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(1) 512K x 36
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16MB
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(1) 2M x 36
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(1) 2M x 36
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None
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None
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16MB
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(1) 1M x 36
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(1) 1M x 36
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(1) 1M x 36
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(1) 1M x 36
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20MB
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(1) 2M x 36
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(1) 2M x 36
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(1) 512K x 36
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(1) 512K x 36
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24MB
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(1) 2M x 36
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(1) 2M x 36
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(1) 1M x 36
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(1) 1M x 36
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DRAM CONFIGURATION (CON’T)
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Size
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Bank 0
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Bank 1
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Bank 2
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Bank 3
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32MB
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(1) 4M x 36
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(1) 4M x 36
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None
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None
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32MB
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(1) 2M x 36
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(1) 2M x 36
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(1) 2M x 36
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(1) 2M x 36
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36MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 512K x 36
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(1) 512K x 36
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40MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 1M x 36
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(1) 1M x 36
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48MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 2M x 36
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(1) 2M x 36
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64MB
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(1) 4M x 36
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(1) 4M x 36
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(1) 4M x 36
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(1) 4M x 36
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64MB
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(1) 8M x 36
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(1) 8M x 36
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None
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None
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68MB
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(1) 8M x 36
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(1) 8M x 36
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(1) 512K x 36
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(1) 512K x 36
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72MB
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(1) 8M x 36
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(1) 8M x 36
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(1) 1M x 36
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(1) 1M x 36
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80MB
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(1) 8M x 36
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(1) 8M x 36
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(1) 2M x 36
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(1) 2M x 36
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96MB
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(1) 8M x 36
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(1) 8M x 36
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(1) 4M x 36
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(1) 4M x 36
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128MB
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(1) 8M x 36
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(1) 8M x 36
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(1) 8M x 36
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(1) 8M x 36
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Note: The location of banks 0, 1, 2 & 3 are unidentified.
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CACHE CONFIGURATION
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Note: The size of the cache modules are unidentified.
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VIDEO MEMORY CONFIGURATION
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Size
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Bank 0
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Bank 1
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512KB
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512KB
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None
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1MB
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512KB
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512KB
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Note: The location of banks 0 & 1 are unidentified. The size of the chips are unidentified.
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CPU SPEED SELECTION
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Speed
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25MHZ
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33MHZ
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33MHz
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Open
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Closed
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50iMHz
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Closed
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Open
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66iMHz
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Open
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Closed
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