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+This call gets information about attached devices.
+==Syntax==
+ DosDevConfig (DeviceInfo, Item, Parm)
+==Parameters==
+;DeviceInfo (PVOID) - output: Address of the byte-wide field containing the requested information.
+;Item (USHORT) - input: Device information requested.
+:0 - Number of printers attached
+:1 - Number of RS232 ports
+:2 - Number of diskette drives
+:3 - Presence of math coprocessor (where 0 = not present, 1 = present)
+:4 - PC Submodel Type (where the return is the system submodel byte)
+:5 - PC Model Type (where the return is the system model byte)
+:6 - Display adapter type (where 0 = monochrome mode compatible, 1 = other).
+;Parm (USHORT) - input: Reserved for future use and should be set to zero.
+==Return Code==
+;rc (USHORT) - return:Return code descriptions are:
+* 0 NO_ERROR
+*87 ERROR_INVALID_PARAMETER
+==Remarks==
+The system model (function 5) and submodel (function 4) information is obtained from BIOS.
+In addition, the number of devices attached in a PS/2 environment reflect only devices that are "awake". Devices that are "asleep" are not counted.
+==Bindings==
+===C===
+<PRE>
+#define INCL_DOSDEVICES
+USHORT  rc = DosDevConfig(DeviceInfo, Item, Parm);
+PVOID   DeviceInfo;    /* Returned information */
+USHORT  Item;          /* Item number */
+USHORT  Parm;          /* Reserved */
+USHORT  rc;            /* return */
+</PRE>
+===MASM===
+<PRE>
+EXTRN  DosDevConfig:FAR
+INCL_DOSDEVICES     EQU 1
+PUSH@  OTHER   DeviceInfo  ;Requested information (returned)
+PUSH   WORD    Item        ;Item number
+PUSH   WORD    Parm        ;Reserved (must be zero)
+CALL   DosDevConfig
+Returns WORD
+</PRE>
+==Example Code==
+This example gets information about model type, monitor and coprocessor and display it.
+<PRE>
+#define INCL_DOSDEVICES
+#define MACHINE_MODEL 5
+#define DISPLAY_TYPE 6
+#define FIND_COPROCESSOR 3
+#define RESERVED 0L
+BYTE   DeviceInfo;
+USHORT rc;
+   if(!DosDevConfig(&DeviceInfo,          /* Returned information */
+                    MACHINE_MODEL,        /* Item number */
+                    RESERVED))            /* Reserved */
+      printf("Model Type %d ",DeviceInfo);
+   if(!DosDevConfig(&DeviceInfo,          /* Returned information */
+                    DISPLAY_TYPE,         /* Item number */
+                    RESERVED))            /* Reserved */
+      if (DeviceInfo)
+         printf("Colour display ");
+      else
+         printf("Mono display ");
+   if(!DosDevConfig(&DeviceInfo,          /* Returned information */
+                    FIND_COPROCESSOR,     /* Item number */
+                    RESERVED))            /* Reserved */
+      if (DeviceInfo)
+         printf("Coprocessor");
+      else
+         printf("No Coprocessor");
+</PRE>
+====== Note ======
+Text based on [[http://www.edm2.com/index.php/DosDevConfig_(Legacy)]]
+{{page>en:templates:fapi}}