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STEP 386/20
EVEREX SYSTEMS, INC.
STEP 386/20
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Processor
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80386
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Processor Speed
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20MHz
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Chip Set
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Unidentified
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Video Chip Set
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None
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Maximum Onboard Memory
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16MB (8MB located on memory card)
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Maximum Video Memory
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None
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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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355mm x 304mm
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I/O Options
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External memory card
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NPU Options
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80387
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CONNECTIONS
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Purpose
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Location
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External memory card
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SL1
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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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Color/mono switch
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S1
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Unidentified
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NPU not installed
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W3
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Open
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NPU installed
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W3
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Closed
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Step Up not installed
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W14
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Closed
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Step Up installed
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W14
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Open
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Bus speed select 6.7MHz
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W17
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Closed
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Bus speed select 10MHz
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W17
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Open
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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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1MB
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(4) 256K x 9
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None
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None
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None
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2MB
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(4) 256K x 9
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(4) 256K x 9
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None
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None
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3MB
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(4) 256K x 9
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(4) 256K x 9
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(4) 256K x 9
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None
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4MB
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(4) 256K x 9
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(4) 256K x 9
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(4) 256K x 9
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(4) 256K x 9
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4MB
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(4) 1M x 9
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None
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None
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None
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8MB
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(4) 1M x 9
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(4) 1M x 9
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None
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None
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12MB
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(4) 1M x 9
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(4) 1M x 9
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(4) 1M x 9
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None
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16MB
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(4) 1M x 9
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(4) 1M x 9
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(4) 1M x 9
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(4) 1M x 9
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Note: Banks 2 & 3 are located on the memory card. The size of the parity chips is unidentified.
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DRAM BANK CONFIGURATION
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Banks used
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RN27
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RN28
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RN29
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RN30
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RN31
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RN32
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1
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Installed
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Not installed
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Not installed
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Installed
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Not installed
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Not installed
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2
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Not installed
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Installed
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Not installed
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Not installed
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Installed
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Not installed
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4
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Not installed
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Not installed
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Installed
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Not installed
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Not installed
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Installed
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DRAM BANK CONFIGURATION (CON’T)
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Banks used
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RN58
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RN59
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RN60
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RN61
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RN62
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RN63
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1
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Installed
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Not installed
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Not installed
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Installed
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Not installed
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Not installed
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2
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Not installed
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Installed
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Not installed
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Not installed
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Installed
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Not installed
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4
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Not installed
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Not installed
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Installed
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Not installed
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Not installed
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Installed
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SIMM SIZE CONFIGURATION
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Size
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W15
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256K x 9
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Closed
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1M x 9
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Open
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BASE MEMORY CONFIGURATION
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Size
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W16
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512KB
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Closed
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640KB
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Open
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CACHE CONFIGURATION
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Note: The size of the cache is unidentified.
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