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General Description

VAX and PDP11 Hardware Virtualization allows users of HP VAX and PDP11 (Previously known as DIGITAL VAX and PDP11) computers to move application software and user data to a modern Intel or AMD based x86 compatible platform without having to make changes to software and data. VAX and PDP11 Hardware Virtualization is a software solution that replaces VAX and PDP11 hardware. 

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The principles of VAX and PDP11 Hardware Virtualization

Virtualized hardware

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CHARON-VAX and CHARON-PDP virtualize various VAX and PDP11 architectures and meet or exceed the performance level of these VAX and PDP11 systems when run on the recommended hardware platform. Our VAX and PDP11 emulator product is currently available in the following variants:

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The following table explains which hardware boards CHARON virtualizes:

Subsystem

Covered VAX and PDP11 hardware

Serial Lines Controllers

UART, QUART, CXA16, CXB16, CXY08, DHQ11, DHV11, DZV11,
DZQ11, DL11, DLV11, DZ11, DHW42-AA, DHW42-BA, DHW42-CA

XMI Disks/Tapes Controllers

KDM70

BI Disks Controllers KDB50
QBUS Disks ControllersRQDX3
QBUS/UNIBUS Tapes ControllersTQK50, TUK50

SCSI Controllers

NCR53C94

DSSI SubsystemSHAC, HSD50
CI SubsystemCIXCD, HSJ50
Network ControllersDEQNA, DESQA, DELQA, DEUNA, DELUA, DEMNA, DEBNI, PMADAA 

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Host platform

The Virtualization Software presents standard VAX and PDP11 devices to the VAX and PDP11 operating system, allowing the OS to function as though it were still running on a VAX and PDP11 computer. For example, virtual disk container files in a directory or physical devices of the host Windows platform are presented by the Virtualization Software to the VAX and PDP11 OS as emulated SCSI disks attached to a SCSI adapter.

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