OS-9 Device Descriptor and Configuration Module Reference
OS-9 Device Descriptor and Configuration Module Reference OS-9 Device Descriptor and Configuration Module Reference
3SCFTMDevice Descriptors MICROWARE• OS-9 does not allow a device to claim exclusive use of a vector ifanother device has already been installed on the vector. Additionally,it does not allow another device to use the vector once the vectorhas been claimed for exclusive use.• This value is software dependent.See AlsoF_IRQ system call entry in the OS-9 Technical Manual.210 OS-9 Device Descriptor and Configuration Module Reference
SCF Device Descriptorsv_pollinEditMod Labels4-SCF logical unit static storage4-polled input flagINPUT_TYPE3DescriptionThis specifies whether input on the device is interrupt driven or polled. Ifthe device is operated in polled mode, SCF calls the driver’s readroutine for every character. This value is device dependent.Macro Example#define INPUT_TYPE IRQDRIVENPort Generic Default Value0 (zero)Port Specific Override ValueRefer to SCF//DESC/config.des (Figure 3-3).Available ValuesDevice input values are defined in the header file, scf.h, and in Table3-13.Table 3-13 v_pollin Available ValuesDescription Macro EditModInterrupt driven IRQDRIVEN 0x0000Polled POLLED 0x0001OS-9 Device Descriptor and Configuration Module Reference 211
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3SCFTM<strong>Device</strong> <strong>Descriptor</strong>s MICROWARE• <strong>OS</strong>-9 does not allow a device to claim exclusive use of a vector ifanother device has already been installed on the vector. Additionally,it does not allow another device to use the vector once the vectorhas been claimed for exclusive use.• This value is software dependent.See AlsoF_IRQ system call entry in the <strong>OS</strong>-9 Technical Manual.210 <strong>OS</strong>-9 <strong>Device</strong> <strong>Descriptor</strong> <strong>and</strong> <strong>Configuration</strong> <strong>Module</strong> <strong>Reference</strong>
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