OS-9 Device Descriptor and Configuration Module Reference

SCF Device Descriptorsdd_modeEditMod Labels2-device descriptor data definitions5-device mode capabilitiesDD_MODE3DescriptionUsed to check the validity of a caller’s access mode byte in I_CREATEor I_OPEN system calls. If a bit is set, the device can perform thecorresponding function. The S_ISIZE bit is usually set, because it ishandled by the file manager or ignored. If the S_ISHARE bit is set, thedevice is non-sharable. A printer is an example of a non-sharabledevice.Port Generic Default ValueMacroS_ISIZE | S_IREAD | S_IWRITEEditMod0x2003Port Specific Override ValueRefer to SCF//DESC/config.des (Figure 3-3).OS-9 Device Descriptor and Configuration Module Reference 197