A PostScript interpreter supports a collection of input/output and other devices, such as communication channels, disks, and cartridges. The standard file operators access these devices as files. Some devices have device-dependent parameters. In addition, there are some named sets of parameters that do not correspond to physical devices.
No communications parameter sets are implemented.
Next to that, the %Calendar% device is not supported.
The %diskn% device is supported though (n refers to the instance).
This device is supported (needed, for example, for the start-up of the interpreter).
|
Parameter |
Comment |
|---|---|
|
Blocksize |
1024 (some dummy value) |
|
Bus |
%scsi% (dummy value, the PS %scsi% device is not supported) |
|
Free |
Supported |
|
HasNames |
True |
|
InitializeAction |
0 (modification has no effect) |
|
Interleave |
1 |
|
LogicalSize |
0 |
|
Mounted |
True |
|
PhysicalSize |
0 |
|
PrepareAction |
Not supported |
|
Removable |
False |
|
Searchable |
True |
|
SearchOrder |
1 |
|
Type |
FileSystem |
|
Writeable |
True |
This device is supported.
|
Parameter |
Comment |
|---|---|
|
Blocksize |
1 |
|
Bus |
Not supported |
|
Free |
Supported |
|
HasNames |
True |
|
InitializeAction |
0 (modification has no effect) |
|
Interleave |
Not supported |
|
LogicalSize |
409600 |
|
Mounted |
True |
|
PhysicalSize |
409600 |
|
PrepareAction |
Not supported |
|
Removable |
False |
|
Searchable |
False |
|
SearchOrder |
100 |
|
Type |
FileSystem |
|
Writeable |
True |
A PostScript programme cannot initialise the device; modifications of the Action parameters are ignored.