Wolfram Language Paclet Repository
Community-contributed installable additions to the Wolfram Language
"PDP-1"
| "PDP-1" an emulator of the DEC's PDP-1 computer. | |
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Creating a virtual machine instance:
create a new instance of the PDP-1 virtual machine |
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For the virtual machine, the following properties can be queried:
"PDP-1"
obj["ConsoleState"] | ||
obj["MemoryState"] | ||
obj["MemoryView"] | ||
obj["ProcessorState"] | ||
obj["ScreenState"] | ||
obj["StepCount"] | the number of steps the machine has been run |
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For the virtual machine, the following commands can be executed using :
"PDP-1"
reset the state of the consol | ||
return an interactive debugger | ||
load a list of integers bin | ||
read the contents of the memory address addr | ||
write val addr | ||
reset the state of the processor, setting the program counter to org | ||
reset the machine, loads bin org | ||
run n | ||
run n | ||
reset the state of the screen | ||
a dynamic Image |
Examples | MoreExamples⊳ |
Create a new instance of the virtual machine:
"PDP-1"
In[1]:=
pdp1=
["PDP-1"]
 | VirtualMachine |
Out[1]=
VirtualMachineObject
 |  |
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Get information about the object:
In[2]:=
Information[pdp1]
Out[2]=
VirtualMachineObject | |||||||||
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Obtain the state of the processor:
In[3]:=
pdp1["ProcessorState"]//Dataset
Out[3]=
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Load the Spacewar! binary into memory:
In[4]:=
 | VirtualMachineExecute |
Spacewar! |
Out[4]=
VirtualMachineObject
| |
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Verify the memory has been loaded with the binary:
In[5]:=
pdp1["MemoryView"]
Out[5]=
Reset the processor and set the program counter to 4 (the start of the program):
In[6]:=
| VirtualMachineExecute |
Out[6]=
VirtualMachineObject
| |
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In[7]:=
| VirtualMachineExecute |
Out[7]=
Run the object for 100 000 steps and watch the spaceships move:
In[8]:=
| VirtualMachineExecute |
Out[8]=
VirtualMachineObject
| |
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Obtain the current state of the processor:
In[9]:=
pdp1["ProcessorState"]//Dataset
Out[9]=
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Get a trace of the execution of 100 additional steps: