23 lines
1.1 KiB
Markdown
23 lines
1.1 KiB
Markdown
---
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layout: page
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title: PDP-11/70 Machine Configurations
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permalink: /devices/pdp11/machine/1170/
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---
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PDP-11/70 Machine Configurations
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PDPjs supports a variety of PDP-11/70 machine configurations, including:
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* [PDP-11/70 Boot Monitor](/devices/pdp11/machine/1170/monitor/)
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* [PDP-11/70 with Front Panel](/devices/pdp11/machine/1170/panel/)
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* [PDP-11/70 "Server Array"](/devices/pdp11/machine/1170/array/)
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* [PDP-11/70 with VT100 Terminal](/devices/pdp11/machine/1170/vt100/)
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The [PDP-11/70 with Front Panel](/devices/pdp11/machine/1170/panel/) also comes in a
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[Debugger Configuration](/devices/pdp11/machine/1170/panel/debugger/), which features a section on
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"[Toggle-Ins](/devices/pdp11/machine/1170/panel/debugger/#toggle-ins)" for your switch-toggling enjoyment.
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Unless otherwise specified, the above configurations include 256Kb of RAM. The PDP-11/70's 22-bit architecture
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supports a maximum of 3,840Kb of RAM, since the last 256Kb is reserved for UNIBUS devices. The top 8Kb is known
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as the *I/O Page*, a region containing hardware registers belonging to the CPU, MMU, and assorted peripherals.
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