h6. [[Hardware Abstraction Layer]] h6(. [[HAL entry points from RISC OS]] h6((. » HAL_DebugRX h2. HAL_DebugRX h5. (HAL entry #85) <pre> int HAL_DebugRX(void) </pre> |_<. Entry | | |- | | |_<. Exit | | |- |Returns character read, or -1 if none available | h4. Use Attempts to read a byte from the HAL's debug terminal (e.g. serial port). If no byte is immediately available, -1 should be returned. If the HAL has been compiled with debugging disabled, -1 should be returned. This is an internal call for OS use only, and its specifications are subject to change without warning. User software requiring the use of low-level debug input/output should prefer to use the function pointers returned by [[OS_ReadSysInfo 11]], as their specification is fixed. h6. Information source: HAL.Tungsten.s.Debug in CVS